THE PREVENTION OF DISEASE IN THE UNITED STATES ARMY DURING 
WORLD WAR II 
THE PANAMA CANAL DEPARTMENT 
Exhibits A, B, and C, to Chapter 14, Volume II Silt* document It renrodnoed tm unedited, unr••▼tewed antei-tnl 
os fUe In the HtetorlciO. division, S00, and etntenente of oiinten. 
any wisae&ts, or or U lot tat ooatolaoA horoia do not aooo«»»rily 
roprtaont the tion of tho Swr«ooa 0«a»ral, Bopiirtaoat of %h& lrayf or 
official polio/ or doctrine, fhoroforo, this doonmoal it act to to 
reproduced la any part or la Its entirety. EXHIBIT A HEADQUARTERS PANAMA CaNAL DEPARTMENT 
Office of the Department Surgeon 
Quarry Heights, Canal Zone 
COMPREHENSIVE DRAINAGE SURVEY 
MALARIA control 
June 1943 
1 DRAINAGE SURVEY - MALARIA CONTROL 
Index of Sections 
Section 1 - Purpose. 
Section 2 - General Procedure. 
Section 3 - General Drainage Specifications. 
Section 4 * Specific Report on Post of Corozal (Area No. 1). 
Section $ - Specific Report on Corozal Hospital - Cemetery Section, 
(Area No. 2 ). 
Section 6 - Specific Report on Albrook Field (Area No, 3 ). 
Section 7 - Specific Report on Fort Clayton (Area No. 4 ), 
Section 8 - Specific Report on Outlying Area Along Clayton-Albrook 
Highway (Area No, $ ). 
Section 9 - Specific Report on Fort Kobbe (Area No. 6 ), 
Section 10- Specific Report on Quarry Heights (Area No. 7 ). 
Section 11- Specific Report on Fort Amador (Area No. 8 ). 
Section 12- Specific Report on Camp Paraiso (Area No, 9 ). 
Section 13- Specific Report on Outlying Area Between Fort Clayton 
and Chiva Chiva (Area No. 10). 
Section 14- Specific Report on Fort William D. Davis (Area No. 11), 
Section 15- Specific Report on Fort Randolph (Area No. 12). 
Section 16- Specific Report on Fort Gulick (Area No. 13). 
Section 17- Specific Report on France Field ( Area No. 14) <> 
Section 18- Specific Report on Galeta Island ( Area No. 15). 
3 DRAINAGE SURVEY - MaIARIA CONTROL 
Index of Drawings 
Drawing No. M.C. 1 - Corozal, CZ. 
Drawing No. M.C. 2 - Corozal, CZ. 
Drawing No. M.C. 3 - Corozal Cemetery and Vicinity. 
Drawing No, M.C. U - Albrook Field, CZ. 
Drawing No* M.C* 5 - Albrook Field, CZ. . 
Drawing No, M.C. 6 - Albrook Field, CZ. 
Drawing No. M.C. 7 - Fort Clayton, CZ, 
Drawing No* M.C, 8 - Fort Clayton, CZ. 
Drawing No. M.C, 9 - Outlying Area Along Albrook-Clayton Highway 
Drawing No* M.C, 10- Fort Kobbe, CZ. 
Drawing No, M.C. 11- Fort Kobbe, CZ 
Drawing No. M.C. 12- Fort Kobbe, CZ 
Drawing No. M.C. 13- Fort Kobbe, CZ 
Drawing No, M.C. L4- quarry Heights, CZ 
Drawing No. M.C* 15- Fort Amador, CZ 
Drawing No. M.C. 16- Camp Paraiso, CZ 
Drawing No. M.C* 17- Outlying Area between Fort Clayton and Chiva 
Chiva. 
Drawing No. M.C. IB- Fort William D. Davis, CZ . 
Drawing No* M.C. 19“ Fort William D. Davis, CZ. 
Drawing No. M.C. 20- Fort Randolph, CZ. 
Drawing No. M.C, 21- Fort Gulick, CZ. 
Drawing No. M.C. 22- Fort Gulick, CZ. 
Drawing No, M,C* 23- France Field, CZ. 
Drawing No* M.C. 2-4- France Field, CZ. 
Drawing No* M.C, 25- France Field, CZ. 
Drawihg No. M.C, 26- France Field, CZ. 
Drawing No, M.C* 27- Galeta Island. , 
Drawing No, M.C. 2B- Galeta Island. 
5 MALARIA CONTROL - DRAINAGE SURVEY 
PANAMA CANAL DEPARTMENT 
26 JULY 19A3 
7 DRAINAGE SURVEY 
MaLARIA CONTROL 
PANAMA CANAL DEPARTMENT 
26 JULX 1943 
PURPOSE. - In order that the incidence of malaria 
may be held to an absolute minimum in the Panama Canal Department, 
it is necessary that adequate drainage be maintained. This is a 
most important factor in the success of a malaria control program. 
With a view to developing a complete and definitive drainage plan 
to the end that potential mosquito breeding areas may be eliminated 
permanently, a comprehensive drainage survey under the direction 
of the Department Surgeon, assisted by personnel of the Office of 
the Division Engineer, is being undertaken. This survey will 
include all the military posts and bases and adjacent territory 
in the Panama Canal Department. Recognition has been taken of 
the fact that the closest coordination of drainage plans with those 
of The Panama Canal is necessary. Accordingly, that agency has 
been contacted with the purpose in mind of completely integrating 
the drainage facilities of the Army with those of that agency. 
Reports for definite areas, describing existing conditions, with 
recommendations for improvements therein, will be issued from 
time to time as the survey progresses. 
2. GENERAL PROCEDURE, a. Maps of all the posts, bases 
and outlying areas will be prepared on which will be indicated the 
existing drainage facilities differentiated in so far as practicable 
and necessary as to type and in the case of natural streams as to 
cover and pooling of water, 
b. A survey will then be accomplished to determine 
what work will be necessary’, the work to be classified as to im- 
mediate need (IN), near future development (NFD) and long range 
development (LRD), 
£. Where construction work other than the simplest 
ditching or filling is required, a topographic map of the area will 
be prepared. This map will be platted to a scale of 1H = AO1 and 
where necessary will show contours at two (2) foot intervals, 
together with invert elevations of pipes, culverts, ditches and 
other pertinent drainage data. 
d. Where a drainage structure except of the most 
elementary character is proposed, a complete engineering design 
for it will be prepared. This design will show: 
(1) Drainage area in acres, classified as to 
surface characteristics. 
9 (2) Design flow in cubic feet per second, 
computed from the area served and rain- 
fall data for that particular area on 
file at The Panama Canal. 
(3) Size, shape, grade and type of drainage 
structure proposed0 
(A) Capacity and velocity of flow in the 
structure. 
e, A plan and specification for the work in suf- 
ficient detail for construction will be prepared, 
f. During the period of construction an engineer- 
ing Inspector will be assigned to the project to insure that the 
work is carried on in rigid compliance with the plans and specifi- 
cations, 
3. GENERAL DRAINAGE SPECIFICATIONS. a. The utmost 
care will be given to obtaining the maximum grades practicable to 
insure high velocities and minimum structural requirements. One 
half round invert tile will be laid to a minimum grade of 0.8% 
unless there is sufficient reason why such grade can not be obtain- 
ed. In general, velocities in pipes and culverts shall be not less 
than 3 feet per second when flowing one half full. Velocities in 
ditches shall be as high as practicable not to produce excessive 
erosion. 
b. In no case, except to avoid the construction 
of an inverted syphon for a sanitary sewer, will a pipe line or 
cable of any description be laid within the flow limits of the 
ditch. Such pipe lines or cables will be constructed below the 
flow lines of the ditch. Where it is necessary for a sanitary 
sewer to cross a ditch, the sewer shall be constructed of cast iron 
or ’’Translte” pipe as an initial step toward the elimination of sani- 
tary sewage from open drainage courses. In the construction of new 
ditches, when existing pipe lines or cables are encountered in the 
flow line of the proposed ditch, grades of such pipe lines or cables 
will be adjusted or the alignment or grade of the ditch revised 
to avoid interference with flow. Pipe lines or cables will not 
be laid through new or existing culverts. Twelve (12) inches 
will be the minimum diameter of any sewer conveying surface run- 
off. Where box culverts are installed, a definite, semi-circular 
channel will be formed through them. 
c. Entrance and outlets of culverts will be 
shaped and paved in so far as practicable to avoid "potholes’1 and 
standing pools of water. At junctions of ditches especial care 
will be taken that the junction is complete so that erosion will 
not occur. 
d. In the construction of buildings supported on 
piles or columns, the area beneath the building will be graded 
before the building is constructed to avoid subsequent pooling of 
water under the building. 
10 A. SPECIFIC REPORT ON POST OF CORQZAL ( AREA NUMBER ONE). 
a. Area included. Post of Corozal and outlying 
area, bounded generally on the north by Corozal Hospital and Ceme- 
tery, on the east by Albrook Field, on the south by Diablo Heights 
and on the west by The Panama Canal. Reference maps M.C. 1 and 
M.Co 2, 
b. Drainage System No. 1. Originates about 800 
feet east of the Army Commissary in Corozal and discharges into 
the Canal just south of Diablo Heights. Main system designated as 
1, with branches designated as 1-A, 1-B, 1-C, etc., proceeding 
upstream. 
(1) Ditch 1. This ditch is an improved dirt 
channel from the Canal to the 61 x A' culvert under Gaillard High- 
way and near the new cold storage plant. The daily tide reaches 
this culvert. Above the culvert the ditch is paved with one-half 
round invert tile to its termination in a subsoil drain. Recom- 
mendations are that: 
(a) The ditch be straightened and paved 
or piped from the 5" x $• box culvert near the Canal to the 61 x A1 
culvert near the cold storage plant. Part of this ditch is on 
Panama Canal property. (LED). 
(b) A pipe in the flow line of the ditch 
approximately 100 feet upstream from the 61 x A1 culvert be remov- 
ed or the ditch grade be raised to clear this pipe which causes 
the ditch to silt trapping water at the outlet of the 2 - IB** pipes 
upstream. (NFD). 
(c) The adequacy of size of the 2 - 18*0- 
pipes be investigated as the flow area is out of proportion to 
other culverts in the system. Eliminate these pipes entirely, 
if practicable, (NFD). 
(d) The one-half round invert tile be 
completed at the outlet of the 2A" culvert just below junction 
1-S and 1-T, (IN). 
(e) The grade of the one-half round in- 
vert tile at the entrance of the last mentioned culvert be adjust- 
ed to eliminate the 6" trap at this point. (IN). 
(f) The ditch slopes from the 6’ x A1 
culvert to the outlet of the 3' x 2' culvert under building 
282 be paved. (LRD). 
(2) Ditch 1-A. Improved dirt and tidal. 
Minor drainage, (Panama Canal property). Recommend periodic 
maintenance. (3) Ditches 1-B and 1-B-l to l-B-4. Improved 
dirt. Lower end tidal. Recommend new completely paved ditch from 
point just above intersection of 1-D with 1 along toe of fill and 
parking area to the area north of the parking area. Regrade 1-B 
from 1-B-l to new ditch, 1-B-l, l-B-2, l-B-3, and l-B-4 to discharge 
into new ditch. Construct sewer from new ditch to edge of engineer 
area along course of 1-B, Regrade 1-B from 1 to 1-B-l. All of 
above (IN). (Part of above on Panama Canal property). Complete 
fill between parking area and existing fill. (LRD) 
(4) Ditches 1-C and 1-D, Old ditch channel 
and tidal. (Panama Canal property). Recommend cleaning and in- 
stallation of one-half round invert tile for any part above the 
tidal level. (NFD). 
(5) Ditch 1-E. Complete one-half round in- 
vert tile to 1 and eliminate large "pothole11 at Intersection with 
1 (IN). Construct new one-half round invert tile ditch from 
1-E-l to existing one-half round concrete at the corner of the 
MacDonald Tarleton Construction Building. (Panama Canal property) 
(NFD). 
(6) Sewers 1-F. 1-G. 1-1 and 1-J. All are 
sewers. Recommend reconditioning ends at intersection with 1 to 
prevent erosion and potholes and thorough reconditioning and clean- 
ing of inlets to these sewers. (IN). 
(7) Ditch 1-H. Recommend paving with one- 
half round concrete, (IN) 
(8) Ditch 1-L. Recommend cleaning and recon- 
ditioning. (IN). 
(9) Ditch 1-M. Grass ditch. No change. 
(10) Sewer 1-M. Sewer and one-half round 
invert tile. No change. 
(11) Ditch 1-P. Recommend paving with one- 
half round invert tile from 1 to highway and along highway to 
high point, (IN). 
(12) Ditch 1-Q. One-half round invert tile. 
No change. 
(13) Ditch 1-R. One-half round invert tile. 
Upper section very flat. Recommend survey to determine if grade 
can be increased. (NFD). Repair holes in lower section. (IN). 
(14) Ditches 1-S and 1-T. Paved and improved. 
No change. 
(15) Ditch 1-U. Dirt ditch with seepage. 
Straighten and pave with one-half round invert tile to NCO Club. 
(IN). 
12 (16) Ditch 1-V. Seepage only. Replace with 
subsoil drain packed in gravel. (IN). 
(17) Ditch 1-X. Pave with one-half round 
invert tile to 1-U-l then with subsoil drain. (IN). 
(18) Ditch 1-Y. Pave with one-half round in- 
vert tile, (IN), 
(19) Ditch 1-Z. Pave with one-half round in- 
vert tile, (IN), 
(20) Ditch 1-Q-l. Repair and connect into l-Q.(IN) 
(21) Ditch 1-H-l and l-R-2. Pave with one-half 
round invert tile. (IN). 
(22) Ditch l-R-3. Replace with one-half round 
invert tile to 12” culvert under street, (LRD), , 
(23) Ditches 1-U-l and l-U-3. Pave with one-half 
round invert tile, (IN). 
(24) Ditch l-U-2. Install subsoil drain. (IN). 
(25) Ditch 1-Y-l. Install subsoil drain. (IN), 
(26) Ditch 1-Y-2. Pave with one-half round 
invert tile. (IN). 
(27) Ditch 1-Z-l. No change. 
(2B) Ditch l-U-4, Complete with one-half round 
invert tile to 1-U. (LRD), 
(29) Miscellaneous items in area tributary to 1, 
(a) Regrade areas south of road loop at 
rear of cold storage plant. Regrade large fill about 500 feet south- 
west of plant, (IN). 
(b) all pipes and ditches leading from 
ice plant area into ditch 1 to be completed definitely to water in 
this ditch, (IN), 
(c) Eliminate algae producing water around 
bldg. U5. (IN). 
(d) Eliminate algae producing water around 
lumber stacks along ditch I in engineer area. (IN). 
(e) Regrade triangle occupied by ”Pan Lock” 
and regrade short sections of one—half round concrete in 
this triangle. (IN). 
13 (f) Eliminate constant pooling of water 
near intersection of railroad spur to cold storage plant with main 
lines. (IN), 
(g) Complete one-half round invert tile 
from drain near southwest corner of bldg 283. (IN). 
(h) Deepen and clean 2 minor drains into 
1 at a point about 30 feet below the 2 - 18M0culverts. (IN) 
(i) Connect wash rack drain from near 
bldg 183 into 1-Q. (IN). 
Q) Clean inlet box and culvert at point 
60 feet west of bldg 284. (IN). 
(k) Install one-half round invert tile 
from swampy area about 70 feet east of bldg 282 into 1-R. (IN.!). 
« 
(l) Install one-half round invert tile 
from swampy area about $0 feet southwest of bldg 230 to 1-T-l. (IN). 
(m) Regrade area and drain into 1-J the 
storage yards located around a point 350 feet west of bldg 283. (IN). 
(n) Reset where needed and complete to a 
definite water course or sewer, ditches 1-J-l, l-J-2, l-J-3, l-J-4 
and l-J-$. (IN). 
(o) Drain or cover valve box located near 
1- about 400 feet from intersection with 1. (IN). 
(p) Pave ditch 1-T-l with one-half round 
invert tile. (IN). 
c. Drainage System No. 2. Ditch 2. Improved dirt. 
Tidal to 2-C. Recommend survey and regrading of ditches 2 to junction 
2- 2-C to junctin 2-C-2, 2-C-l 2-D and 2-E with a view to obtain- 
ing steeper grades in the upper reaches and tributaries. Regrade 
ditches above 2-F to discharge into new ditch proposed under 4 b 3. 
Regrade ditch 2-C above 2-C-2 and ditch 2-C-2 to discharge into 
ditch 3. All of above (IN), (Part of above on Panama Canal property), 
d. Drainage System No, 3, 
(1) Ditch 3. Improved dirt. Not subject to 
daily tide. Recommendations are that: 
(a) A new paved ditch or sewer be constructed 
from a point $00 feet above 3-C to near the end of the existing twin 
4' x 411 box culvert under Gaillard Highway on line $. Flow line to 
be held low enough to drain same area as this culvert to permit 
future drainage into it if required, (IN), (b) The two existing 8M culverts under the 
railroad near the Canal be replaced by a new culvert of adequate 
size, (IN). 
(c) The existing ditch be regraded and paved 
or piped from the Canal to 3-A. (LRD), (Part Panama Canal). 
(d) The existing ditch be regraded and paved 
or piped from to Gaillard Highway. (IN), 
(2) Ditches 3-A, 3*b, 3=B~1 and 3-B-4 be regraded 
and paved. (NFD) 
(3) That a complete paved drainage system for the 
road to the radio transmitter station be constructed and that 
3-D be drained into this. (NFD). 
(4) That the entire area bounded by the Canal, the 
Ordnance Depot, Gaillard Highway and the Engineer Depot, and ditch 
1 be ditched with minor ditches to the main ditches and regraded 
as required to fill all ruts, holes, depressions, etc. (NFD). 
(5) Remove or reset to prevent trapping of water 
the two 12” culverts under an abandoned road about 50 feet west 
of bldg 34c (IN) 
(6) Fill large hole in road shoulder in front of 
bldg. 34. (IN).. 
(7) Regrade areas at west end of bldg 196 and back 
of bldg 34. (IN). 
(8) Connect small drainage pipe from back of bldg 
34 into sewer. (IN). 
(9) Drain seepage area at northwest corner of bldg 
34o This water may be due to a sewer leaking. (IN). 
(10) Repair ends of culvert in 3-E near southwest 
corner of bldg 196 (IN)« 
(11) Clean 10” line immediately above last mention- 
ed culvert. (IN). Replace with one-half round concrete, (LRD), 
(12) Regrade 3-S-2 to obtain steeper grades, if 
prac t icable. (LRD). 
(13) Gravel or regrade around bldg 37 to avoid 
water pooling. (IN). 
(14) Provide drainage for water standing along 
north side of bldg 187, (IN), 
(15) Adjust grade on 3~F at subsoil drain between 
bldgs 44 and 83 to get complete drainage. (NFD). 
15 (16) Pave 3-F with one-half round concrete between 
junction with 3~F-1 and the next 6” culvert, (IN)0 
(17) Investigate 6M sections of 3-F to determine 
adequacy of size, (NFD). 
(18) Install one-half round invert tile along east 
side of Gaillard Highway from opposite Finance Office to bldg 
197o (IN)o 
e. Drainage System No, 4, 
(1) Ditch Lo Improved dirt, Daily tide does not 
inundate. Recommend lowering and replacement of existing 18” 
culvert which is trapping water in ditch. Culvert is now in de- 
teriorated condition. (IN)o Regrade to 4-B to obtain definite flow. (IN). 
(2) Connect junction of 4 and 4-B with underground 
6' x 6' drain No, 5. This will permit a lower outfall point for 
4-B and 4- above this point. Regrade 4 and 4-B to eliminate water 
pooling. Connect 4 with ditch proposed unde* 4d-da. (IN), 
(3) Pave 4 above 4-B junction and 4-B with one-half 
round invert tile, (LRD), 
f, Drainage System No, 5, 
(1) Drain 5, This drain is a box culvert from the 
Canal to Gaillard Highway and partly paved and partly one-half 
rorthd invert tile above that point. Recommendations? 
(a) Pave ditch slopes from 5-K to 5-L and 
from $-V to 5-S, (NFD). 
(b) Reshape entrance floor of twin 4* x 4‘ 
culvert under Gaillard Highway to prevent pooling. (NFD). 
(c) Repair holes in bend near bldg 241. (IN), 
(d) Reshape and regrade section from just 
above 5-N to 5-P to prevent pooling under culvert caused by pipe 
across flow line of ditch. (IN), 
(e) Construct new one-half round invert 
tile ditch from a point 6n 5 about $0 feet above $-V junction 
north to the Coronal Hospital property line, then parallel to 
this property line to a point about 70 feet east of the end of 
the new building being constructed in this area. Construct 
intercepting ditch to $-Q and 5-V and grade this area to the 
new ditches. (IN)- Ditches 5-X ahd 5-X will be extended to the 
new ditch. (IN), (Panama Canal property). (f) Construct new one-half round invert tile 
ditch from a point on 5 about 300 feet above 5-R junction, in a 
northeasterly direction through a draw now impounding water to 
a point where the Corozal Hospital - Post of Corozal property 
line intersects the west ditch line of the Corozal - Clayton 
Highway . Connect wash rack drainage to ditch. (IN)1, 
(2) Ditch 5-B and tributaries. Recommendations. 
(a) Repair upper end of 24'11 culvert in 5-B 
under road to Ordnance Depot. (IN). 
(b) Construct new sewer or one-half round 
invert tile ditch from junction box now holding water located a 
few feet northwest of bldg 94- to roof drain around motor parts 
warehouse. (IN). 
(c) Complete roof drains from temporary 
warehouses "A”, "B" and "C". (IN). 
(d) Install one-half round invert tile from 
road at north end of temporary warehouse nBn. (IN). 
(e) Repair junction of 5-B with ditch 7-F. (IN). 
(3) Ditch 5-C and tributaries. Recommendations. 
(a) Complete with one-half round invert tile 
unpaved section of 5-C under building 26 and regrade upper section 
so that it will drain through culvert at corner of building 26. (IN). 
(b) Install one-half round invert tile on 
upper end of 5-C-l, with culvert under road and inlet box near 
corner of building 100. (IN). 
(c) Drain road loop around building 17 with 
one-half round invert tile and culverts into 5-C-2. (Hi). 
(d) Regrade area between buildings 10 and 
53. (IN). 
(4-) Ditch 5-E. Complete with one-half round invert 
tile to culvert. (IN). 
(5) Ditch 5-F. Regrade to eliminate pockets. (IN), 
(6) Ditch 5-H and tributaries. Recommendations; 
(a) Install one-half round invert tile or sub- 
soil drain to seepage area 60 feet west of bldg 47. Fill ruts in 
this area. (IN). 
(b) Install subsoil drains to seepage areas 
in area about 200 feet west of bldg 4-7. (NFD). 
17 (7) Ditch 5-J and tributaries. Recommendations. 
(a) Reshape entrance to culvert in 5-J at 
intersection with 5 to avoid pooling, (NFD). 
(b) Repair holes in 5-J along entire section. (IN). 
(c) Lay new one-half round invert tile from 
5-J to a seepage area in rear of bldg 113. (IN), 
(d) Deepen and lay new one-half round invert 
tile in short seepage ditches west of bldg 114. (IN). 
(e) Fill large holes west of tennis court 102. (IN). 
, (f) Construct new one-half round invert tile 
ditch from end of 5-J-2 to system of dirt ditches south of bldg 77, 
These ditches have no outlet except seepage or possible partially 
plugged subdrain. Complete this system of ditches with one-half 
round invert tile for those conveying storm water and with subsoil 
drains for those that are seepage ditches only, (NFD), 
(g) Pave slopes 5-J to 5-J-2. (LRD). 
% (8) Ditch 5-L and tributaries. Recommendations: 
(a) Straighten and pave 5-L from 5 to the 
recently constructed tile drain near the Albrook Field boundary. 
Suggest direct route from 4® x 43 twin culvert under Gaillard 
Highway to 2’ x 4® culvert near bldg. 71. (LRD), 
(b) Repair several seepage holes in 5-L from 
opposite building 120 to end, (IN). 
(§<) Complete roof drain from building 326 and 
connect a kitchen drain from it to the sewer, (IN), 
(d) Repair holes in bottom of 5-L-l about 50 
feet above junction with 5-L. (IN), 
(e) Entire ditch along north side of road in 
front of buildings 171, i#2, 144, 146 and I48 very flat, full of 
holes and pooling water. Replace with new one-half round invert 
tile. (NFD). 
(f) Pave with one-half round invert tile new 
road ditches on north side of road in rear of bldgs 144 and 146. 
(NFD), 
(g) Complete juntion of 5-L-2 with 5-L. (IN). 
(h) Construct new one-half round invert tile 
ditch from area between bldgs 61 and 136 to 5-L. (IN). 
18 (i) Construct new one-half round invert tile 
ditch from out-let of 2' x 41 culvert in 5-L along south side of 
road west to street intersection, (UN), 
Q) Construct new sewer from inlet of 2' x 41 
culvert in 5-L along north side of road west to street intersection. 
(IN). 
(k) Repair ends of 2.51 x 51 culvert in 5-L-5. 
(IN). 
(l) Complete with one-half round tile invert 
ditch 5-L-5-A, (IN)." 
(m) Replace 5-L-5-B with new one-half round 
invert tile or subsoil drain. (IN). 
(n) Fill low area in V between 5-L and 5-L-6. 
(IN). 
(6) Provide roof drainage from bldg 149. (IN). 
(p) Replace 5-L-ll with one-half round invert 
tile and divert seepage area now drained by 5-L-6 into it. (IN). 
(g) Regtade 5-L-B to drain and repair junction 
with 5-L. (IN). 
(r) Replace 5-L-7*A and 5-L-7-D with one-half 
round invert tile and drain seepage area between them. (IN). 
(s) Deepen and regrade 5-L-7-B. (IN). 
(t) Repair holes in 5-L-7-C and complete with 
one-half round invert tile, (IN). 
(u) Replace with one-half round invert tile, 
5-L-9 system complete to the two 12" culverts in front of command- 
ing officer’s quarters. (IN), 
(y) Lay new one-half round invert tile from 
a point in 5-L about 300 feet above 5-L-9 to a seepage area about 
100 feet southeast of the commanding officer's quarters. (IN). 
(w) Drain seepage area in V between 5,-L and 
5-L-9 into 5-L with one-half round invert tile. (IN). 
(x) Drain seepage area near end of 5-L-10 into 
5-L. (IN). “ • 
(y) Regrade area around commanding officer’s 
quarters. (IN), 
19 (9) Ditch 5°N. Pave slopes from 5 to next 24" 
culvert, (LRD). 
(10) Ditch 5-R. Reshape upper end 2 - 24" cul- 
verts to prevent pooling. Install subsoil drain in seepage area 
near end of culvert. (IN). 
(11) Ditch 5-S. Eliminate holes formed by seepage 
water just above 48" 0 culvert. Eliminate seepage area about 50 
feet southwest of theater with one-half round invert tile and sub- 
soil drains into 5-S. Eliminate water pooling around small pump- 
ing station at rear of theater by draining into 5-S. (IN). 
(12) Ditch 5-S-l. Complete one-half round invert 
tile to next highway culvert. (IN), 
(13) Install one-half round invert tile and road 
culvert for road drainage ditches along east side of road to 
Albrook Field at a point about 500 feet west of the theater. 
Drain into 5-L. (NFD), 
(14) Fill large holes about 100 feet west of inlet 
of 2 - 24" culverts in 5-R. (IN). 
(15) Eliminate seepage holes around roof drain and 
regrade roof drain, mess hall, in front of new barracks, (IN), 
(16) Ditch 5-Z and tributaries. Recommendations: 
(a) Repair holes near junction with 5. (IN). 
(b) Reshape upper end of 2 - 24" 0 culverts 
to eliminate pooling. (IN). 
(c) Eliminate holes along side of 5-Z from 
last mentioned culvert to opposite bldg. 178. (IN). 
(d) Install one-half round invert tile in 
ditch 5-Z-3. (NFD), ' 
(e) Straighten and pave slopes of 5-Z to 
5-Z-3. (LRD). 
(17) Complete one-half round invert tile roof 
drains for building 24. (IN). 
% 
(18) Install roof drainage system for bldgs 242 
and 243. (IN). 
(19) Install one-half round invert tile from 5-Z 
to roof drain in barracks "M", (IN). g. Drainage System No. 6. Recommendations: 
(1) Install one-half round invert tile for ditch 
6 to where culvert begins. (LRD). 
(2) Install one-half round invert tile in ditch 
6- (LRD). 
h. Drainage System No. 7. 
(1) Ditch 7. Recommendations: 
(a) Install one-half round invert tile and 
stabilize slopes from Canal proper to 7-A, (IN). 
(b) Complete junctions of 7-B, 7-C, 7-D and 
7- with 7 to eliminate potholes. (IN), 
(2) Ditch 7-A and tributaries. Recommendations: 
Install one-half round invert tile in 7-A-l, 
upper end of 7-A and 7-A-3. (LRD). 
(3) Ditch 7-E. Very flat grade. Regrade, relay- 
ing with one-half round invert tile. (IN). 
(/+) Ditch 7-F and tributaries. Recommendations: 
(a) Complete one-half round invert tile from 
7-F-l to next 2/+n culvert. (IN). 
(b) Install one-half round invert tile around 
planing mill or otherwise eliminate dirt ditches. (IN). 
(c) Complete one-half round invert tile along 
south side of bldg 227. (IN). 
(d) Regrade and replace as required with one- 
half round invert tile upper sections of 7-F-2 around bldg 22/+, (IN). 
(e) Extend 7-F-2-A with one-half round invert 
tile to drain area northwest of bldg 23-4. (IN). 
(f) Extend, regrade and complete with one-half 
round invert tile ditch 7-G. (IN), 
(g) Regrade and gravel area east of planing 
mill. (IN). 
(h) Provide roof drainage for bldgs 288 and 
2B9. (IN). 
(i) Regrade area west of bldgs 288 and 289.(IN). Q) Regrade area west of bldg 260. (IK). 
(k) Fill hole around fire hydrant east of 
bldg 258. (IN). 
(l) Regrade area south of bldg 267. (IK), 
(m) Regrade area northwest of bldg 234-. (IK). 
1. Drainage System No. 8a 
Ditch No. 8, Install one-half round invert 
tile from Canal to upper end and connect in south end of roof 
drainage system for Quartermaster storehouse, (IN), 
!• Drainage System No. 9. 
(1) Ditch 9. Recommendations; 
Qdeplete paving slopes from 9-C to outlet of 
36* culvert near 9-J, (IN), 
(2) Ditch 9-C. Recommendations: 
(a) Pave with one-half round invert tile 
and extend from 9-C-l along the toe of the existing fill to a 
point about 300 feet north of the north end of the Quartermaster 
storehouse. (IN). 
(b) From the last mentioned point and a point 
west and about the midpoint of the quartermaster storehouse con- 
struct and pave with one-half round invert tile a new ditch, cutting 
it directly to the Canal about opposite the hardware storehouse. (IN), 
(3) Ditch 9-C-l. Replace with one-half round 
invert tile to a point at the toe of a proposed fill. (IN). Com- 
plete fill in aree north of hardware storehouse to form smooth 
toe line. (IRD) 
(4) Construct new one-half round invert tile 
ditch from 9 to toe of fill about half way between 9-C and 9-D 
and parallel to 9-D. (IN)„ 
(5) Ditch 9-D. Regrade and install one-half 
round invert tile, f IN), 
(6) Ditch 9-E and tributaries. Recommendations; 
(a) Replace upper end of 9-E with one-half 
round invert tile. (IN). 
. (b) Regrade and replace 9-E-l with one- 
half round invert tile, (IN). 
(c) Regrade and replace 9-E-3 with one- 
half roupd invert tile. (IN). (7) Ditch 9-F. Fill and abandon. (IN) 
(8) Ditch 9-G. Fill between 9 and 9-E and install 
one-half round invert tile above 9-E, (IN). 
(9) Ditch 9-H and tributaries. Fill 9-H between 
9 and 9-E, Fill 9-H-l between 9 and 9-E and install one-half 
round invert tile above 9-E, (IN). 
* ■ 
(10) Ditch 9-K. Replace with one-half round invert 
tile. (IN). 
(11) Lay new one-half round invert tile in ditch 
9-L. (IN). 
(12) Lay new one-half round invert tile in ditch 
9-M. (IN). 
(13) Extend 9 with one-half round invert tile be- 
tween R.R. and laundry. (-IN). 
(14) Regrade and gravel area between laundry and 
building 300. (IN). 
(1$) Repair and regrade 9-P system to eliminate 
water at entrance to culteerts. (IN), 
(16) Install inlet box or otherwise drain street 
intersection northwest of building 267. (IN) 
(17) Lay new one-half round invert tile from 9 
along old creek channel toward 10-A-l, (IN). 
k. Drainage System No. 10. 
(1) Ditch No. 10. Recommendations: 
(a) Remove 36" culvert at Canal bank. (LRD). 
(b) Regrade, straighten and pave from 
Canal to Gaillard Highway. (LRD). (Part Panama Canal property). 
(2) Ditch 10-A and tributaries. Recommendations; 
Complete unpaved sections with one-half round 
invert tile. (IN), 
(3) Ditch 10-C. Pave with one-half round invert 
tile. (Panama Canal property. (LRD). 
(4) Ditch 10-D. Pave sides to culvert at Gaillard 
Highway. (Panama Canal property). (LRD). 
23 (5) Ditches 10-D-l. and 10-D-3. Pave 
sections not now paved with one-half round invert tile. (Panama 
Canal property). (NFD). 
(6) Ditch 10-E. Pave sides (Panama Canal property), 
(LED). 
(7) Ditch 10-E-l. Pave with one-half round invert 
tile from 10-E to first 20n culvert under access road. (LED), 
Fill depressions in, eliminate 20H culvert and pave with one-half 
round invert tile section from 20fl culvert under access road to 
end of bldg 251. (IN). 
(8) Fill depressions in ditches between bldgs 251 
and 182. (IN). 
(9) Regrade E.R. ditch alongside bldg 181. (IN). 
(10) Complete roof drain from fire and guardhouse 
to point of definite disposal, (NFD). 
(11) Regrade and pave with one-half round invert 
tile highway ditch on east side of Gaillard Highway from 10-E 
to opposite Quartermaster access road. (IN), Recommended 
Captain, Sanitary Corps 
Approved . 
Colonel, Medical Corps 
APPROVED: 
Assistant Chief of Staff, G-A 
Deputy Department Commander L E G E N D 
j ROUND /NVTRr T/LE DITCH 
RULE CONCRETE O/TCH 
DIRT DITCH 
CULVERT 
NOTE: Notations in circles thus prefer to subdivisions 
of section 4 of accompanying report 
SCALE: AfiproK. /E400 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
COROZAL, C.Z. 
orrict OF THE OtPT SUR6CON 
RECOrlMK N 
San. C*^P5 
APPnovtD 
C#u ilD. C ON PJr 
JWf /943 
APPROVED 
ASST. CHIEF STAFF Q-4. 
OEPOTT DEPT. COMrlANDEB 
DR W 6 V* SIC-1 ' L E & E N D 
ROU/VD /NVERT TV IE O/TCH 
TULL CONCRETE O/TCH 
O/RT O/TCH 
CULVERT 
T/L£ O/TCH 
NOTE• Natations in circ/es thus to Subdivisions 
of Section 4 of accompanying report 
3CAL£* ApfiroF. /:24-O0 
WAR DEPARTMENT 
PAN A MA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
COROZAL C,Z. 
OFFICE OF THt' DEPT. SURGEON 
RtconntnoE u 
CAV T. "conrs” 
APPROVE* (JuJjjUU$.&*/. 
coi~. mMo. corps 
JUNE /94 3 
APPROVED 
ASST. CHIEFJTAFF Q~+ 
DEPUTY DEPT conn* (VDf R 
OFTWG A/o/yC-Z continuation of 
MALARIA CONTROL - DRAINAGE SURVEY 
paHama canal department 
august 1943 
27 5c SPECIFIC REPORT ON COROZAL HOSPITAL - CEMETERY 
SECTION (AREA NQ„ 2). 
a. Area included. Corozal Hospital and Cemetery 
and outlying area. Reference Map - M.C. 3, 
b. Drainage System No, 5, 
(1) Ditches $-N and have low spots about 
opposite ditch 5-X, Recommend diversion one-half round invert 
tile ditch and culvert from 5~N and $-P to new ditch along prop- 
erty line proposed under A fle0 (Panama Canal property)0 (NFD). 
(2) Ditch 5-R and tributaries. 
(a) Repair and reshape 5-R frcra 2-24” 
culverts to end0 (Panama Canal property,) (IN) 
(b) Straighten and pave with one-half 
round invert tile 5-H-l to point now paved, 5-R-l-A and 5-R-l-B. 
Install subsoil drains in seepage areas at upper end of 5~R-1“B0 
(Panama Canal property.) (IN), 
(c) Eliminate by subsurface drains, one- 
half round invert tile and/ or fill, swampy area in V between 
5-R-l and 5-H°l~A. (Panama Canal property)0 (IN)0 
(3) Ditches 5-Q and 5-V. To be connected 
into new ditch proposed under A fie, 
{A) Ditch 5-X, Connect into ditch proposed 
under $ lb, (Panama Canal property.) (NFD). 
(5) Ditch 5°Y. Connect with one-half round 
invert tile into ditch proposed under A fie. (Panama Canal Prop- 
erty.) (IN). 
(c) Drainage System No0 10. 
(1) Ditch 10. Pave sides from Gaillard High- 
way to junction with 10-G. Repair, straighten and complete with 
one-half round invert tile from point about opposite dairy barn 
to 36“ culvert under Clayton-Corozal Highway. (Panama Canal prop- 
erty.) (LRD). Install one-half round invert tile for $0 feet 
on each end of 36” culvert under Clayton-Corozal Highway. (Panama 
Canal property.) (NFD), Above the 36” culvert, ditch is well 
shaded and no development is thought necessary. Eliminate by the 
use of subsurface drains, one-half round invert tile and/ or fill, 
the swamp on the south side of the ditch about 200 feet above 10-J, 
(Panama Canal property.) (IN) 
29 (2) Ditch 10-C and tributaries. 
(a) Pave upper end of 21H culvert to 
avoid pools. (Panama Canal property. ) (IN), 
(h) Install one-half round invert tile 
to permanently eliminate pooling in ditch 10-C-l. (Panama Canal 
property.) (IN). 
(3) Ditch 10-D and tributaries. 
(a) Complete about 50 feet of unpaved 
ditch in 10-D just above 61 x 6' culvert under Gaillard Highway 
and eliminate by the use of subsurface drains, one-half round 
invert tile and/or fill, the swampy area just west of culvert, 
(Panama Canal property.) (IN). 
(b) Complete about 50 feet of unpaved 
ditch in 10-D-3 just above 24” culvert under Gaillard Highway and 
eliminate by the use of subsurface drains, one-half round invert 
tile and/ or fill, the swampy area on both sides of ditch at this 
point. (Panama Canal property.) (IN). 
(c) Install one-half round invert tile 
in ditch 10-D-4-. (Panama Canal property)(LED). 
(d) Install one-half round invert tile 
and culvert under road for ditch 10-D from junction with 10-D-5 
to end. (Panama Canal property.) (LED). 
(4) Ditch 10-E. Pave end of and open to the 
subdrain the 12M culvert at junction with 10-E-l. Install remov- 
able one-half round invert tile over the top of the existing one- 
half round invert tile in 10-E from the last mentioned culvert up 
to and including the fence around the confinement area. This will 
prevent the continual clogging of this drain with leaves, (Panama 
Canal property.) (IN). 
(5) Ditch 10-G and tributaries. 
(a) Install one-half round invert tile 
in unpaved sections of 10-G and 10-G-5. (Panama Canal property.) 
(NFD). 
(b) Install one-half round invert tile 
in unpaved sections of 10-G-l and 10-G-6. (Panama Canal property.) 
(LED). 
(6) Ditch 10-J and tributaries. 
(a) Eeshape to prevent peeling the outlet 
and inlet of the culvert in 10-J at the junction with 10-J-2. 
(Panama Canal property.) (IN). 
(b) Install one-half round invert tile 
in 10-J-2. (Panama Canal property.) (NFD). 
30 (c) Drain with one-half round invert 
tile or subsoil drain and/or fill the old ditch channel in section 
of 10-J between junctions 10-J-3 and 10-J-A, Deepen and clean 
10-J for about BO feet above 10-J-A junction to eliminate large 
sunny pool, (Panama Canal property.) (IN)o 
(d) Straighten and install one-half 
round invert tile in 10-J from 10-J-A to end of water. (Panama 
Canal property.) (LED), 
(e) Fill holes, ruts, etc., in area 
northeast of 10-J-3 between junction with 10-J and 10-J-3~A, 
Install one-half round invert tile in 10-J-3 between junction 
10-J-3-A and 20" culvert, (Panama Canal property.) (IN). 
(f) Install one-half round invert tile 
in 10-J-3-B and in 10-J-3 from lower 20" culvert to a point about 
50 feet above upper 20" culvert. (Panama Canal property.) (NFD), 
(g) Install one-half round invert tile 
in 10-J-A from junction with 10-J to end of water about one-half 
way from 10-J to the IB," culvert. (Panama Canal property.) (LED), 
(h) Ditches 10-J-5, 10-J-6 and 10-K 
are in well shaded areas and practically waterless. No improve- 
ment is thought necessary. 
(i) Clean and deepen 10-J-A for about 
80 feet above junction with 10-J. (Panama Canal property.) (IN). 
Q) Install one-half round invert tile 
in 10-L from 2A" culvert to top of hill. (Panama Canal property.) 
(IN). 
(k) Fill all holes, ruts, etc., in old 
Corozal road between Corozal Cemetery and Clayton rock quarry. 
(Panama Canal property.) (IN), 
(l) Oil regularly the depression area 
located on the east side of Gaillard Highway about 1000 feet 
south of the Cardenas River. There apparently is no economically 
feasible method of eliminating this pool. A small automatic trash 
pump, connection into the ground water system, or a culvert con- 
structed under the Gaillard Highway and Panama Railroad are pos- 
sible solutions. 
31 NOTE: notations in rectanelbs thus\ b4 i refer to 
JUB-O/VISIONS op SECTION £ Op ACCOMRANYINB REPORT 
see jm m.c. z for cqntinua t/qn of all drains th/s sh. 
S'CJale; l"»200f 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
LEGEND 
DRAINAGE SURVEY 
MALARIA CONTROL 
COROZAL CEMETERY & VICINITY 
ROUND INVERT TILE 
FOUL COMC 
DIRT 
OFFICE OF THE PE FT. 3URCE0N 
approves 
COL, MCD. conrs 
JULY 1949 
APPROVED 
A5SX CHIEF STAFF «-4__ 
pekitt oepT, cohmahoe* 21 
r»w« NO. MC- 3 Recommended George W. Hamilton 
Captain, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Crops 
APPROVED: 
Assistant Chief of Staff, G-A 
Deputy Dhpaftment LGhiiinander 
33 MALARIA CONTROL - DRAINAGE SURVEY 
Panama canal department 
28 SEPTEMBER 1943 
35 6. SPECIFIC REPORT ON aLBRQOK FIELD (Area Number Three). 
a. Area included. Albrook Field and vicinity as 
indicated on accompanying maps, M.C. 4, M.C. 5 and M.C. 6. 
b, Drainage System No. 11 (Rio Maria Sala and 
tributaries). 
(1) Ditch 11 (Rio Maria Sala). 
(a) Improve channel and pave invert and 
side slopes from junction with 12 (Curundu River) to junction with 
11-G. Construct new completely paved ditch and culvert from 11-G 
to a point about 200 feet below 11-H along the general location 
indicated on Drwg. M.C. 4. Include new culvert under street. Old 
culverts and channel in this section to be used as overflow with 
bottom raised and sloped to completely drain during low tide. (LRD). 
(b) Pave invert and side slopes from the 
point 200 feet below 11-H to the 61 x 7* box culvert under the 
highway and just below junction with 11-S. Eliminate ty a smooth 
bend the V at junction with 11-P and 11-Q, (IN). 
(c) Pave invert and side slopes from the 
6' x 8’ highway culvert to junction with 11-Z. (NFD). 
(d) Pave invert and side slopes from 
11-Z to next 30" culbert. (IN). 
(e) Complete junctions of the several 
pipes discharging into 11 on the east banks between junctions with 
12 and 11-G so that no potholes are formed in ground above Elev. 
6.0. (IN). 
(f) Recondition junction of 11 and 11-L 
to eliminate the pooling of water at this point. (IN). 
(2) Ditch Il-A. Pave with one-half round 
invert tile. (LRD). 
(3) Ditch 11-B. Install storm sewer from 
junction with 11-B-l to 18H culvert and complete fill over it, (IN). 
Install one-half round invert tile from 11 to 3-l8n culverts under 
street, (LRD), 
(4) Ditch 11-C. Complete paving invert and 
side slopes from 11 to 24H culvert just above ll-C-5. (IN). 
($) Ditch 11-C-l and ll-C-2. Regrade to 
eliminate pooling at upper ends and pave with one-half round in- 
vert tile. (IN). 
(6) Ditch ll-C-3. Complete paving invert and 
slopes, (IN). 
37 (7) Ditch 11-04. Pave with one-half round 
invert tile. (IN), 
(8) Ditch ll-C-6. Install storm sewers and 
one-half round invert tile to junction with 11-C-6-A, Fill adja- 
cent area and replace with storm sewer of adequate size the 
existing blocked 8” culvert just below junction 11-C-6-A. (IN). 
(9) Ditch 11-D and tributaries. Clean 18" 
culvert at lower end, (Bl) Install one-half round invert tile 
from 11-D to end of 11-D-l. (NFD), Install onq»half round in- 
vert tile from 11*D-1 to point on 11-D-I-a, 200 feet upstream 
from 11-D-l. (NFD). Install one-half round invert tile from 
11-D-l-A to point on ll-D-l-A-l, 80 feet upstream from 11-D-l-A. 
(NFD)/ Clean and regrade 11-D if steeper grade can be obtained. 
(NFD). 
(10) Ditch 11~£. Complete paving invert and 
slopes from 11 to 30" culvert just above junction with 11-E-l. 
Repair-and clean upper section. Regrade if this fails to elimi- 
nate water pooling. (IN). 
til) Ditch 11-E-l. Complete paving invert 
and slopes. (IN). 
(12) Ditch 11-F. Replace with road inlet box 
and sewer. (IN). 
(13) Ditch 11-G. This ditch is trapped a 
depth of one foot at the mouth of the 2 - 24" culverts at junction 
ll-G-$. This condition contributes to the continuous silting up 
of all the ditches immediately upstream from this point, A 12" 
sanitary sewer placed squarely in front of one of the 24." culverts 
further aggregates the situation. It is recommended that a new 
storm sewer be constructed from the mouth of the 2- 24." culverts 
across the ball diamond and in the rear of the temporary barracks 
to junction ll-G-6 with ditch 11-C. Should the section of 11-C 
from 11-C-5 to ll-C-6 be inadequate, or the invert elevation too 
high, extend the proposed ditch to junction ll-C-5. Inlet boxes 
should be installed and the section under the ball diamond and 
in rear of the temporary barracks should be laid with open joints 
packed in porous material with the ground surface of all the ad- 
jacent areas regraded to drain into the inlet boxes. Sub-surface 
drains should be installed as required, to dry the seepage area in 
rear of the temporary barracks. The road drainage system at the 
V, about $00 feet southwest of the temporary barracks, should be 
completed with one-half round invert tile and drained into the 
proposed storm sewer. The end of the existing 12" sanitary sewer 
protruding into the 24" culvert should be removed and connected 
into the system 100 feet downstream from the entrance to the 
2 - 24" culverts. As an alternate to the above proposal, an in- 
vestigation should be made to determine if the grade of the system 
above the 2 - 24" culverts can be raised to discharge into the 
culverts with satisfactory grades maintained upstream. As a second 
38 alternative, the 2 existing 24” culverts may be replaced from 
their inlets to where they join the original 61 x 5* box culvert. 
Under any of the proposals, the pooling and seepage area in rear 
and to the sides of the temporary barracks should be eliminated, 
together with completing the road drainage system mentioned above. 
All of the above (IN) « From the 2 « 24" culverts at junction 
ll-C-5 straighten and complete paving ditch with one-half round 
invert tile to junction ll-C-12. (IN). Pave side slopes of 
same section. (LED). 
(14) Ditch ll-G-4. Adjust grade to eliminate 
trap at lower end where this ditch enters the 24" culvert. (IN). 
(1$) Ditch ll-G-5. Straighten, regrade and 
install one-half round invert tile in this ditch and its tribu- 
taries, (IN), 
(16) Ditch 11-0-6. Complete one-half round 
invert tile in main ditch and to the street drainage system now 
spilling into it from NCO area. Install one-half round invert 
tile in ditch 11-G-6-B. Install sub-soil drainage system as re- 
quired to eliminate pooling around the two springs near junction 
with 11-G-6-B and at the end of 11-G-6-A. All of above (IN). 
(17) Ditch ll-G-7. Clean and repair upper 
end, (IN). 
(18) Ditch ll-G-9. Straighten, regrade and 
install one-half round invert tile. (IN). 
(19) Ditch ll-G-10. Complete with storm 
sewer and/or completely paved ditch from junction with 11-G 
to existing sewer at road junction about 1200 feet northeast of 
Albrook School. (IN). 
(20) Ditch 11-G-IO-a. Install one-half round 
invert tile from ll-G-10 to a point about 350 feet from junction 
ll-G-10, Include the short feeder branches to this line, re- 
grade around outlet of culvert at upper end to eliminate pooling 
of water. (IN), Install half round invert tile for the remaind- 
er of this system. 
(21) Ditch 11-G-10-B. Install one-half round 
invert tile. (IN). 
(22) Ditch 11-G-11. Complete 24" storm sewer 
to 11-G and finish back-filling ditch from 11-G to street. (IN). 
(23) Ditch ll-G-12. Straighten and pave in- 
vert and side slopes from 11-G to outlet of 36" culvert .about 
200 feet above junction with 11-G-12-B, Complete upper end of 
ll-G-12 with one-half round invert tile. (IN). 
(24) Ditches 11-G-12-A. 1I-G-12-A-1 and 
ll-G-12-A-l-A. Straighten and install one-half round invert tile. 
(IN), 
39 (25) Ditch 11-G-12-B. Install one-half 
round invert tile to culvert about 100 feet above junction with 
ll-G-12 and replace this culvert, (IN). Straighten and install 
one-half round invert tile in this ditch above the replaced cul- 
vert including the several short branches. (LRD). 
(26) Miscellaneous items in areas ad.iacent 
to ditches 11-A to 11-G inclusive0 
(a) Install definite outlet with one- 
half round invert tile or storm sewer to eliminate pooling of 
water around ends of culvert under Gaillard Highway railroad 
crossover at point about 500 feet east of new cold storage plant. 
(IN). 
(b) Complete 6" sanitary sewer and fill 
large hole at a point about 150 feet east of the 12" culvert re- 
ferred to under (a) above. (IN). 
(c) Install one-half round invert tile 
in upper end of 11-C-6*B0 (LRD), 
(d) Regrade to eliminate several deep 
ruts, holes, depressions, etc,, in the large V area between the 
upper end of ditch 11-A and the 11-C-6-B, 11-C-6-A system. Re- 
pair leaky hydrant in this area. (IN). 
(e) Fill old ruts about 100 feet north- 
west of junction of ll-C-l with 11-C. (IN), 
(f) Fill and/or drain with one-half 
round invert tile large hole about 50 feet north of junction of 
11-E with 110 (IN). 
(g) Cover open sanitary sewer manhole 
about 350 feet east of junction of ll-C-6 with 11-C. (IN), 
(h) Extend existing 12" culvert which 
discharges into a "pothole" about 120 feet west of junction of 
11-C-11 with 11-G to discharge to 11-C. (IN). 
(27) Ditches 11-H. 11-J and 11-K. Install 
one-half round invert tile. (IN). 
(28) Ditch 11-L. Straighten and pave invert 
and side slopes from junction with 11 to junction with 11-L-11. 
(LRD)o 
(29) Ditch ll-L-2. Install one-half round 
invert tile from 11-L to end. (NFD)«, 
• 
(30) Ditch ll-L-3. Install one-half round in- 
vert tile from 11-L to next culvert and regrade area around in- 
let to this culvert to avoid pooling. (IN). 
40 (31) Ditch ll-L-4. Install one-half round 
invert tile and pave side slopes from junction with 11-L to 50 
feet upstream from 36" culvert. Drain with one-half round in- 
vert tile and/or fill areas on each side of ll-L-4 just above 
junction with 11-L, (IN), Complete ditch from the point 50 
feet above the culvert with one-half round invert tile to ex- 
isting paved section further upstream, (LED), 
(32) Ditch I1-L-4-A. Install one-half 
round invert tile. (IN), 
(33) Ditch 11-L-4-B. Install one-half round 
invert tile, (LED). t 
(34-) Ditch 11-L-5. Install one-half round 
invert tile from 11-L to next culvert. Above culvert install one- 
half round invert tile, sub-soil drains and/or fill as required 
to totally dry up the swampy area and existing dirt ditches for 
about 200 feet upstream from the culvert, 
(35) Ditch ll-L-6. Install one-half round 
invert tile and pave side slopes from 11-L to the next 2411 culvert. 
(NED). 
(36) Ditches 11-L-6-A and 11-L-6-A-1. Install 
one-half round invert tile to the two 12” culverts under road. (NFD), 
(37) Ditch ll-L-8. Install one-half round in- 
vert tile and pave side slopes from 11-L to junction 11-L-S-A, 
Install one-half round invert tile above junction 11-L-8-A and in 
ditch 11-L-8-B. (IN). 
(38) Ditch ll-L-9, Install one-half round in- 
vert from 11-L to next 24” culvert. (IN), Pave side slopes from 
11-L to end. (NFD). 
(39) Ditch 11-L-10. Install one-half round 
invert tile from 11-L to 12” culvert under road. (IN). 
(40) Ditch 11-L-ll. Complete with one-half 
round invert tile to 11-L.(IN). 
(41) Miscellaneous items in areas adjacent to 
ditches 11-H to 11-L inclusive: 
(a) Eegrade to eliminate flat section 
and repair broken sections of the existing paved ditch through 
the company officers area. (LED), 
(b) Eepair and complete roof drainage 
system for Air Corps and Ordnance warehouse near bank of ditch 11 
between junctions 11-H and 11-K, (IN). 
(c) Eliminate seepage area northwest of 
the above mentioned Ordnance warehouse by the use of sub-surface 
drains and/or one-half round invert tile. (IN). 
a (d) Eliminate extensive pooling of water 
in area located about $00 feet west of junction of 11-L and 11 by 
the use of one-half round invert tile and fill. Fill large deep 
ruts about 200 feet south of this area. (IN). 
(e) Complete backfilling trench and 
around valve box located about 450 feet northeast of junction of 
11-L-3 with 11-Lo Cover or drain the box. (IN). 
(f) Install one-half round invert tile 
along west bank of road to storage tank located on hill west of 
the officers quarters area. (LRD). 
(g) Pave or riprap around end of 24 H 
culvert located about $00 feet southwest of junction of ll-L-7 
with 11-L. (IN). 
(42) Ditch 11-Mo Install one-half round in- 
vert tile between its two junctions with 11, (IN), 
(43) Ditch 11-M-l and tributaries. Regrade 
and install one-half round invert tile in this entire system. (IN). 
(44) Ditch 11-N. Clean. Regrade if required, 
(IN). 
(45) Ditch 11-P. Regrade, and pave invert and 
side slopes, resetting, if required, the 36” culvert under the 
taxiway about 300 feet above junction of ll-P-2 with 11-P. Entire 
area on both sides of section of 11-P above 36” culvert to be 
filled. (IN). 
(46) Ditches 11-P-l. ll-P-2 and 11-P-2-A. Re- 
grade and install one-half round invert tile. Fill in this area 
as required to obtain drainage to the ditches. (IN). 
(47) Ditch 11-Q. Clean and repair. Regrade 
if this does not result in definite flow of water. Repair bridge 
over this ditch at a point about 300 feet below junction with 
11-Q-l so that dirt falling from trucks crossing this bridge does 
not fall into ditch. Install onef-half round invert tile in ditch 
11-Q-l, 11-Q-l-A and ll-Q-2. (IN). 
(48) Ditch 11-R. Regrade and install one-half 
round invert tile. (IN). 
(49) Complete junction with 11 and stabilize 
side slopes either by paving or with sod, (IN), 
(5$) Ditches 11-T and 11-T-l. Regrade and 
install one-half round invert tile with culvert under the adjacent 
side road, (IN), 
(31) Ditches 11-U. 11-V and 11-ff. Complete 
junctions with 11 and stabilize side slopes either with sod or 
pavement. (IN). 
42 (52) Storm sewer 11-X. Complete junction with 
11. (IN). 
(53) Ditch 11-Y. Complete paving invert and 
side slopes from 11 to next 30" culvert. Install 50 feet of one- 
half round invert tile past upper end of existing paved ditch, (IN). 
(54) Ditch 11-Y-l. Eliminate seepage area on 
north side of ditch about 300 feet above junction with 11-Y by 
the use of sub-surface drains and one-half round invert tile. (IN). 
(55) Ditch 11-Y-3. Pave side slopes or stabi- 
lize with sod from inlet to the 2 - 18" culverts just above junc- 
tion with 11-Y to junction with 11-Y-3-A. (IN)0 
(56) Ditch 11-Y-7. Eliminate seepage area 
near junction with 11-Y by the use of sub-surface drains and one- 
half round invert tile. (IN). 
(57) Ditch 11-Z. Pave invert and side slopes 
from junction with 11 to the culvert under the main highway 200 
feet above junction with ll-Z-9. (NFD). 
(58) Ditch 11-Z-l and tributaries. Complete 
paving invert and side slopes.(IN)c 
(59) Ditch ll-Z-2. Complete paving invert and 
side slopes from 11-Z to 11-Z-2-A. (IN). 
(60) Ditch ll-Z-3. Pave invert and side slopes 
from 11-Z to junction with 11-Z-3-A. Install one-half round invert 
tile for 150 feet above junction with 11-Z-3-A. (IN). Install one- 
half round invert tile from the 150 foot point to end of water in 
this ditch. (LftD). 
(81) Ditch ll-Z-4. Install one-half round 
invert tile, (IN). 
(62) Ditch ll-Z-5. Install one-half round 
invert tile from 11-Z to next 24" culvert. (IN). 
(63) Ditch ll-Z-6. Install storm sewer or 
pave invert and side slopes from 11-Z to next 24" culvert. (IN), 
Install one-half round invert tile from 24" culvert to end. (NFD). 
(64) Ditch ll-Z-7. Install one-half round in- 
vert tile from 11-Z to end, (NFD). 
(85) Ditch 11-Z-B. Straighten, regrade and 
install one-half round invert tile from 11-Z to end. Regrade and 
fill adjacent area to drain to this ditch. (IN). 
(66) Ditch ll-Z-9. Pave invert and side slopes 
from 11-Z to next culvert under highway. (NFD), 
43 (67) Mlscellaneaous items in area adjacent 
or tributary to ditches 11-L to 11-Z inclusive; 
(a) Eliminate water pooling in the en- 
tire plane revetment area south of ditches 11 and 11-Q by the use 
of fill, one-half round invert tile ditches and culverts. (IN). 
(b) Fill large deep ruts in "Skeet” 
shooting area near ditch 11-M. (IN). 
(c) Install one-half round invert tile 
along south side of highway in front of bachelor quarters between 
ditches 11 and 11-Q-l-A. (IN)« 
c. Drainage System No, 12 (Rio Curundu and tribu- 
taries). 
(1) Ditch 12 (Rio Curundu). 
(a) Pave invert and side slopes from 
junction with 11 to existing closed section just above junction 
with 12-E, Construct access manholes in section from 12-E to 
12-G. (LRD). 
(b) Straighten and pave invert and side 
slopes from junction with 12-J to junction with 12-T. Before this 
is done a detailed hydraulic study is to be made to determine the 
required size of existing closed section from 12-J to near 12-E. 
If inadequate this section is to be enlarged, (LRD). 
(2) Ditch 12-ii. Clean thoroughly. If this 
does not eliminate the pooling of water, regrade to a minimum 
grade of 0.3$. (IN). 
(3) Ditches 12-B and 12-C. Regrade and in- 
stall one-half round invert tile. (LRD). 
(4) Ditch 12-D. Remove sharp bend at junction 
with 12 and pave invert to a point 400 feet below junction with 
12-D-l. (LRD), Reverse flow of 12-D ditch proposed under 6-C-6 
and pave with one-half round invert tile, above 12-D-2/12-D will 
be replaced by new paved ditch. (IN). 
(5) Ditches 12-D-l and 12-D-2. Regrade and 
pave with one-half round invert tile, including the several short 
laterals in this area. (IN). 
(6) Construct new ditch with one-half round 
invert tile and concrete side slopes from a point in 12 about $0 
feet above 12-E along a line parallel to 12 D and about 60 feet 
in rear of line of plane revetments to junction of 12-D with 
12-D-2. Extend new paved ditch from this point along D to inter- 
section with 12-F o Entire plabe revetment area east of proposed 
ditch and low ground on both sides of ditch to be filled and drain- 
ed with one-half round invert tile to eliminate the extensive 
pooling of water in this area, (IN). 
44 (7) Ditch 12-F and tributaries. 
(a) From the point where the new paved 
ditch proposed under 6-C-6 intersects 12--F replace 12-F with new 
fully paved ditch to a point about 50 feet above junction with 
ditch 12-F-8. From the latter point construct new fully paved 
ditch to the 90° bend in 12-F about 120 feet below junction 
12-F-5. From the 90° point regrade 12-F and complete with one- 
half round invert tile to the 36" culvert 150 feet below 12-F-3, 
(IN). 
(b) Ditches 12-F-3 and 12-F-4. Regrade 
and install one-half round invert tile. (IN). 
(c) Ditch 12-F-5. Install one-half 
round invert tile. (LED). 
(d) From the 90 bend in 12-F about 
120 feet below 12-F-5 to the next 2 - 24" culverts, construct 
fully paved ditch. (IN). 
(e) Install one-half round invert tile 
in 12-F from 12-F-5 to 12-F-B. Remove existing deteriorated 
18" and 24" culverts in this section. Continue to tie into new 
paved ditch at point 50 feet above junction 12-F-8. (IN), 
(I) Ditch 12-F-7. Fill and abandon 
sections not replaced by new paved ditch. (IN). 
(g) Ditch 12-F-3. Install one-half 
round invert tile to end of existing paved section of 12-A. 
(h) Regrade ditch 12-F above its inter- 
section with the new ditch proposed under 6-C-6, (IN), 
(k) Deepen and regrade the several short 
branches into 12-F between 12-F-3 and 12-F-4. 
(3) Miscellaneous items in area adjacent or 
tributaries to ditches 12-a to 12-F inclusive. 
(a) Fill open water main ditch at a 
point about 400 feet southeast of junction of 12-E with 12, Cover 
or drain valve boxes and fill around them, (IN). 
(b) Fill and drain with one-half round 
invert tile the entire plane revetment area northwest of the Pan- 
American plane hangar. (IN), 
(c) Fill the low area adjacent to the 
west side of the Pan-American plane hangar. (IN). 
(9) Ditch 12-G. Straighten and pave invert 
and side slopes from 5‘ x 6* culvert under highway about 2§0 feet 
below junction 12-C-6 to the 36" culvert under highway about 500 
feet above junction 12-G-7. (NFD), 
45 (10) Ditch 12-G-l. Regrade to eliminate pool- 
ing of water, (IN). 
(11) Ditch 12-G-3. Regrade to eliminate pool- 
ing of water. (IN), 
(12) Ditch 12-G-5. Clean and repair. Regrade 
if this does not result in definite flow of water. (IN), 
(13) Ditch 12-G-6 and 12-G-7. Straighten and 
install one-half round invert tile. (IN), 
(14-) Ditch 12-G-A-A. Pave invert and side slopes 
above junction with 12-G-A-A-2. If sufficient slope cannot be 
obtained, reverse flow to drain into 12-G-2. (IN). 
(15) Ditch 12-G-A-A-l. Install one-half round 
invert tile above junction with 12-G-4-A-1-A, (LRD). 
(16) Ditch 12-G-A-A-l-A. Install one-half round 
invert tile and/or storm sewer. (IN). 
(17) Ditch 12-G-A-A-2. Complete paving ditch 
between junction with 12-G-A-A and next 2A” culvert. Replace one- 
half round invert tile between junctions with 12-G-4--A-2-B and 
12-G-A-A-2-C. Replace one-half round invert tile just above junction 
with 12-G-A-A-2-D. (IN). 
(IB) Ditch 12-G-A-B. Install paved ditch and/or 
storm sewer for about ()()* feet above junction with 12-G-A. Install 
one-half round invert tile from this point to end of ditch on top 
of hill. (IN). 
(19) Ditch 12-G-A-B-l. Install one-half round 
invert tile to junction with 12-G-A-B-I-a and grade borrow pit on 
each side to drain to it. (IN), Install one-half round invert 
tile above junction with 12-G-A-B-I-a. (LRD). 
(20) Ditch 12-G-A-B-2. Install one-half round 
invert tile and connect in wash racks. (IN), 
(21) Ditch 12-G-A-B-2-A. Install one-half 
round invert tile, (LRD), 
(22) Miscellaneous items in area adjacent or 
tributary to ditches 12-F to 12-G. 
(a) Eliminate by the use of fill the 
extensive water pooling in area between taxiway and ditch 12-G 
for about 1200 feet below junction of 12-0-2 with 12-G. (IN). 
(b) Install one-half round invert tile 
in road ditch in front of temporary barracks. (NFD). 
* Number illegible. 
46 (c) Eliminate by the use of fill and/or 
one-half round invert tile the swampy area in the V between 12-G 
and 12-G-4. (IN). 
(d) Install one-half round invert tile 
in ditch 12-G-5-A. (NFD). 
(e) Install inlet box on barracks side 
of road and culvert to drain into upper end of 12-G-5-A. Install 
one-half round invert tile along both sides of highway in front 6f 
barracks. (IN). 
(f) Regrade area in V between 12-G-4 
and 12-G-4-A. (IN). 
(jg) Drain air raid trench located about 
300 feet east of junction of 12-G-4-A and 12-G-4-A-1. (IN). 
(h) Regrade area around temporary build- 
ings at east end of air terminal area. (IN). 
(k) Fill and regrade area on both sides 
of 12 from east end of air terminal area to a point about 4-50 feet 
above junction of 12-G and 12, Fill to within 3 feet of top of 
box culvert and install one-half round invert tile along each side 
of box culvert wall, with the tile discharging into box culvert 
through tide gates. Connect the 2 - 24" sewers and the 2 - 12" 
sewers now discharging into this swamp from the Panama Canal area 
into the box culvert by the use of sewers. (IN). 
(23) Ditch 12-H. Clean and if this does not 
eliminate water pooling, regrade. (IN). 
(24) Ditch 12-J. Regrade and complete installa- 
tion of one-half round invert tile. (IN). 
(25) Ditch 12-J-l. Clean and investigate possi- 
bility of steepening grade. (IN). 
(26) Ditch 12-J-2. Install one-half round 
invert tile. (IN). 
(27) Ditch 12-K. Complete junction with 12. (IN). 
(28) Ditch 12-L. Eliminate potholes at junction 
with 12. (IN). Install one-half round invert tile to next IB'1 
culvert. (LRD). 
(29) Pave invert and side slopes from 12 to 
junction with 12-M*» . Install one-half round invert tile from 
laiter point to junction with 12-M-4. Include short branch lat- 
eral and ditches into swampy area on west side of ditch. (IN), 
Install one-half round invert tile from junction with 12-M-4 
to end. (LRD), 
47 (30) Ditches 12-M-l. 12-M-2. 12-M-3. 12-M-A. 
12-M-5 and 12-M-6. Install one-half round invert tile. (LRD). 
Regrade upper paved section of 12-M-3-a to eliminate pockets, (IN). 
Install one-half round invert tile in lower section of 12-M-3-a. 
(LRD). 
(31) Ditch 12-N. Straighten, raise grade and 
pave invert to drain into 12, (IN). 
(32) Ditch 12-P. Straighten, raise grade and 
pave invert to drain into 12. (IN). « 
(33) Ditches 12-P-l. 12-P-l-a and 12-P-l-B. 
Install one-half round invert tile. (IN). 
(34) Ditch 12-P-2. Pave invert and side slopes 
from 12-P to next 30" culvert. (IN). 
(35) Ditch]12-0. Install one-half round in- 
vert tile from 12 to junction with 12-Q-l. (IN). Install one- 
half round invert tile in the remainder of this system, (LRD). 
Ditch 12-R. Install one-half round in- 
vert tile and regrade around ends of the two highway culverts at 
this point to eliminate pooling. (IN), 
(37) Install one-half round invert tile in 
unpaved section of highway ditches on north side of Gaillard 
Highway between air terminal and motor transportation Division 
buildings, (LRD). 
d. Miscellaneous Improvements, 
(1) In all areas of jdbrook Field and adja- 
cent territory not specifically covered by items in the forego- 
ing, landscaping is to be definitely completed, so that there 
will be left no permanent low areas, depressions, unfilled ditch- 
es (except air raid trenches), open pits around valve boxes and 
fire hydrants or deep ruts. (IN). 
(2) Local low places which collect and hold 
water in Albrook Field proper between runways and taxiways will 
be eliminated by the use of fill and/or sub-drains. (IN). 
(3) A house to house and building to build- 
ing survey of all of Albrook Field and adjacent territory will be 
accomplished with special emphasis on one-half round invert tile 
roof drainage, the survey to insure that? 
(a) The roof drainage system is entire- 
ly completed and carried to a point of definite disposal. If the 
discharge is to a stream, the end point will be so completed as 
not to cause potholes and erosion in the ditch slopes or inverts. 
If discharge is on the ground or hillside, a small area will be 
paved at the end of the tile. (IN). 
48 (b) ‘i'here will be no appreciable amount 
of water trapped in the drains. The drains will first be thorough- 
ly cleaned and if, after cleaning, the water remains in any drain 
to a depth in excess of one-half inch, the drain will be regraded, 
(IK). 
(4.) Improve channel of the Curundu River 
west of the Panama Railroad culvert under Diable Road. This im- 
provement will consist of; 
(a) Removing rocks and other debris and 
obstructions in the channel between the outlet of the twin box 
culverts and the railroad trestle furthermost downstream. (IK). 
(b) Removing the metal scrap and debris 
from the south slope of the drainage channel just below the 
trestles, (IK). 
(c) Deepening the channel itself to 
obtain a definite outlet to the Canal. (IK). 
(d) Removing fallen trees and any other 
serious obstructions between the twin culverts and the Canal. (IK). 
49 SCAL£:-Af>fpay V'lfoo 
WAR DEPARTMENT 
PANAMA CANAL department 
NOTE■ Notations in circles ~thas -To Subdivisions 
of section 6 of accompanying report 
L E G E- N D 
DRAINAGE. SURVEY 
MALARIA CONTROL 
albrook. C. Z. 
j rocs/vd /A/vsnr ~rus djtcr 
SC/1 L C OH C Xf D/TCH 
D/RT- p/TCfJ 
cui vtsrt 
or net of THt of pr si/ftaeoH 
AtCOMHtNHO tyur^VL 
CAPT. SAM. Co A At 
APPAOVCD 
cot. MtD- COUPS 
A UGUST /S43 
APPROVED 
A3JT CHIEF STAFF «-* 
OCPVTV HPT. COMMAwOf R 
OffWS /VO /VJ-C y NOT£: Hol*iions in circles ihus,(£y refer io subdivisions' 
of section G of accompanying report 
SCALE ■ Appro*. / -2400 
war DEPARTMENT 
PANAMA CANAL DEPARTMENT 
L E- G E- N D 
drainage: survey 
MALARIA CONTROL 
ALBROOK. C. Z. 
jf rova/o wire nr rue D/rc/r 
run co/rcRcrs o/tch 
o//Rr o/rc/f 
culusrt- 
Of net of THE DIPTSURStOM 
OJ. 
caff saVwkw 
APPROVE 0 
coiTmid coapJ 
AUGUST /943 
/APPROVED 
asst, chier VArr s-4 
PfPt/rr DIPT. COMMAND!* 
eny/o ivo. me-S' L E G E IN D 
/roc/svo //VKf/?r T/L£r o/rcn 
PULL COA/CPP T£~ O/TCLT 
£>/A T o/rc/f 
CULUP/RT 
SCALE: Approx / Z4-OQ 
NOTE: Notations in circles thus, to subdivisions 
0f section 6 of accompanying report 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE. .SURVEY 
MALARIA CONTROL 
AL&ROOK, C. Z. 
OFFICE or THE PEPT SURGEON i APPROVED 
RECOMMFNOER-tWvv U ~ 
'■ c'apVsanT'corps’ ASST CIIISF STAFF S'4-.„. - 
APPROVED DCPUTy PBPT. COMMANDER 
COL MEC CORPS 
AUGUST / 9+3 ORWG A/O M- C - <S MaLARIA CONTROL - DRAINAGE SURVEY 
PANAMA CANAL DEPARTMENT 
18 OCTOBER 194-3 
51 7. SPECIFIC REPORT ON FORT CUYTQN (AREA NO, 4 ). 
a Area included - Fort Clayton and vicinity as 
indicated by accompanying Maps M.C. 7 and M.C. 8. 
b. Drainage System No. 13. Install one-half 
round invert tile from elevation 6,0 on main ditch to outlet of 
24M culvert under highway. Include all laterals above elevation 
6.0. (IN). 
c. Drainage System No. 14. Install one-half 
round invert tile for this entire system from elevation 6.0 to 
the 24" culvert under the highway. (IN) 
d. Drainage System No. 15. 
(1) Ditch 15. Install one-half round invert 
tile from elevation 6.0 to a point 50 feet above 20u culvert un- 
der highway. Drain numerous pools <and seepage areas on both 
sides of this ditch with one-half round invert tile. (IN), 
(2) Ditch 15-A. Install one-half round invert 
tile. (LRD). 
(3) Ditch 15-B. Install one-half round 
invert tile. (IN). 
(4) Ditches 15-C. 15-D and 15-D-l. Combine 
insofar as practicable and install one-half round invert tile to 
end of water in each branch. (IN). 
c• Drainage System No. 16. 
(1) Ditch 16. In the section below junction 
with 16-A, repair holes in bottom of ditch; remove a temporary 
culvert which is pooling water and eliminate large water pools on 
each side of ditch by the use of fill and/or sub-soil drains. (IN). 
(2) Ditch 16-A. Install one-half round in- 
vert tile from junction with 16 to next culvert. (LRD). 
f. Drainage System No. 17. Install one-half 
round invert tile from elevation 6.0 to next 8H culvert. (IN). 
£. Drainage System No. 18. Clean, repair and 
recondition this system, installing drains in seepage 
areas at upper end, (IN). 
h. Drainage System No, 19. Install one-half 
round invert tile from the Cardenas River to the upper end and 
installs culvert under the highway. Install sub-surface drains 
to dry up the seepage area'southwest of the rock crusher. Con- 
nect waste water from crusher area into this system. (IN). 
53 i. Drainage System No. 20. 
(1) Ditch 20. Clean thoroughly and repair 
side walls. (IN). 
(2) Ditch 20-A. Clean and repair side walls. 
(IN). 
(3) Ditch 20-A-l. Install one-half round 
invert tile (IN). 
(-4) Ditch 20-C. Recondition around outlet 
of 1$" culvert. Divert upper section into inlet of 15" culvert 
to prevent water from running across highway and install one- 
half round invert tile from this point to upper end. (IN), 
J[. Drainage System No. 21. Install one-half round 
invert tile from tt.er to foot of slope with laterals to adjacent 
low areas. (IN), 
k. Drainage System No. 22. Install one-half 
round invert tile from river to 30" culvert. (IN). 
l. Drainage System No. 23. Install one-half 
round invert tile for entire system. (IN). 
m. Drainage System No. 2L, Install one-half 
round invert tile. (LED). 
n. Drainage System No. 25. 
(1) Ditch 25. Repair and replace invert 
tile and pave side slopes from river to outlet of main culvert 
under highway. Repair end of culvert to eliminate pooling. (IN). 
(2) Ditch 25-a. Clean and repair side walls. 
(IN). 
(3) Ditch 25-B. Repair side walls. (IN). 
{U) Ditch 25-B-l. Install one-half round 
invert tile, (IN), 
o. Drainage System No. 26. Install 
round invert tile. (IN). 
£. Drainage System No. 27. Eliminate by the con- 
struction of a suitable drop connection, the large pothole at the 
intersection with the Cardenas River. (IN), Install one-half 
round invert tile in ditch 27. (NFD). 
a- Drainage System No. 28. 
(1) Ditch 28. Eliminate by the construction 
of a suitable drop connection the large pothole at the inter- 
section with the Cardenas River. (IN), 
** Illegible 
54 (2) Ditch 28-A. Install one-half round in- 
vert tile and install culvert under road to lumber yard, (IN). 
(3) Ditch 28-B. Stabilize side slopes with 
sod or paving. (IN), 
r. Drainage System No. 29. 
(1) Ditch 29. Repair broken sections and 
wash-outs in side walls and thoroughly clean from Cardenas River 
to junction with 29-N, (IN). Pave side slopes from Cardenas 
River to junction with 29-K, replacing the 15" culvert immediate- 
ly below junction with 29-F with culvert of adequate capacity, (LRD) 
Install one-half round invert tile from point of existing paving 
just above junction with 29-N to end of water in ditch. (LRD). 
(2) Ditch 29-A. Install one-half round 
invert tile for 50 feet above junction with 29. (IN). 
(3) Ditch 29-B. Repair side walls, (IN). 
(4) Ditches 29-B-2 and 29-B-3. Install one- 
half round invert tile ..* each for 50 feet above junction with 
29-B. (IN). 
(5) Ditch 29-C. Install one-half round 
invert tile from point of existing paving to end of water. (IN). 
(6) Ditch 29-D. Straighten and pave invert 
and side slopes from junction with 29 to next 36" culvert. Pave 
side slopes for 400 feet above junction with 29-D-l, Install 
one-half round invert tile from this latter point to end of ditch. 
(IN). 
(7) Ditch 29-F. Extend full length of valley 
and install one-half round invert tile. (IN). 
(8) Ditch 29-G. Install one-half round in- 
vert tile from junction with 29 to 24" culvert. Replace 9” cul- 
vert under road. (IN), 
(9) Ditches 29-G-l and 29-G-2. Install one- 
half round invert tile. 
(10) Ditch 29-H. Install one-half round 
invert tile. (IN). 
(11) Ditches 29-J. 29-J-l and 29-J-2. Install 
one-half round invert tile with subsurface drains to eliminate 
seepage area at upper end of 29-J-2. (IN). 
(12) Ditch 29-K. Repair side walls. (IN). 
(13) Ditch 29-KH. Install one-half round 
invert tile. (IN). J 
* Illegible 
55 (14) Ditch 29-L. Repair side walls. (IN). 
(1$) Ditch 29-L-l. Install one-half round 
invert tile. (IN), 
(16) Ditch 29-M. Install one-half round invert 
tile. (IN)o 
(17) Ditch 29-N. Regrade to eliminate pools 
of water. (IN). 
s, Drainage System No. 30. Install one-half 
round invert tile from Cardenas River to 20" culvert. (IN). 
t. Drainage System No. 31. 
(1) Ditch 31o Install one-half round invert 
tile. (IN). 
(2) Ditch 31-Ao Install one-half round in- 
vert tile and install new culvert under road. Extend with one- 
half round invert tile to ditch 31. (KFD), 
(3) Ditches 31-B and 31-C. Install one-half 
round invert tile. (IN). 
(4) Ditch 31-Do Install one-half round invert 
tile. (NFD). 
u* teinage_.Sxstems Nos, 32j..33A-34, 35. 36. 37 
and 39. Install one-half round invert tile. Include all tribu- 
taries. (Panama Canal property). (IN). 
y. Drainage System No. 41. 
(1) Ditch 41. 
(a) Straighten and pave invert and side 
. i slopes from Rio grande to culvert, 
dnder Panama Railroad. (Panama 
Canal property), (LRD). 
(b) Eliminate large erosion pool at out- 
let of culvert under Panama Railroad. 
(Panama Canal property). (NFD), 
(c) Finish paving invert and pave side 
slopes from junction with 41-F to 
junction with 41-G. (IN). 
(2) Ditch 41-A. Install one-half round invert 
tile. (Panama Canal property). (IN). 
(3) Ditch 41-B. Recondition culvert end at 
junction with 41-B-l. (IN). Pave side slopes above juntion with 
41-B-l. (NFD). 
56 U) Ditch Al-D. Install one-half round invert 
tile from inlet to 36" culvert at a point about 200 feet below 
junction with Al-D-5 to a point 200 feet above junction with 
a-D-5. (IN). 
($) Ditch Al-D-1. Install one-half round 
invert tile. (NFD). 
(6) Ditch Al-D-2. Pave invert and side 
slopes to a point about 300 feet below junction with 41-D-2-A. 
Install one-half round invert tile from this point to outlet 
of 2U" culvert, together with sub-soil drain to seepage areas 
near this section. (IN). 
(7) Ditch A1-D-2-A. Install one-half round 
invert tile, (IN). 
(8) Ditch Al-D-A. Install one-half round 
invert tile from junction with Al-D-A-D to junction with Al-D-A-E, 
(IN), Remove and enlarge culvert located about 250 feet above" 
junction with Al-D-A-a. (IN), Pave side slopes from junction 
with Al-D-A-A, to junction with Al-D-A-D, (LRD). 
(9) Ditch Al-D-A-B. Install one-half round 
invert tile, (IN), 
(10) Ditch A1-D-A-D. Pave side slopes from 
junction with Al-D-A to next 13“ culvert. Install one-half 
round invert tile above 18n culvert. (LRD). 
w, Drainage System No. A2. 
(1) Ditch A2. 
(a) Straighten and pave invert and side 
slopes from Rio Grande to culvert 
under Panama Railroad. (Panama 
Canal property), (LRD). 
(b) Recondition outlet of culvert under 
Panama Railroad, (Panama Canal 
property), (IN). 
(c) Install one-half round invert tile 
from culvert inlet under detention 
dike to junction with A2-L. (IN). 
(2) Ditch A2-A. Complete installing one- 
half round invert tile. (IN). (Panama Canal property). 
(3) Ditch A2-B. Install one-half round in- 
vert tile, (NFD). 
(A) Ditch A2-B-1. Straighten and install 
one-half round invert tile, (.$■*). 
**Illegible. 
57 (5) Ditch 42-C . Install one-half round 
invert tile. (NFD). 
(6) Ditch 42-D and 42-D-l. Install one-half 
round invert tile with sub-soil drains into major seepage areas. ( 
(NFD). 
(7) Ditch 42-E, Stabilize both side?slopes 
and install sub-soil drains into major seepage areas. (IN). 
(8) Ditch 42-E-l. Install one-half round 
invert tile with sub-soil drains into major seepage areas. (IN). 
I 
(9) Ditch 42-F. Install one-half round 
invert tile and pave side slopes. (IN). 
(10) Ditch 42-G« Install one-half round 
invert tile including the several tributaries now pooling water. 
(IN) o 
(11) Ditch 42-H. Install one-half round 
invert tile for 100 feet above junction with 42. (IN), 
(12) Ditch 42-J. Install one-half round 
invert tile. (IN), 
(13) Ditch 42-K. Install one-half round 
invert tile for 200 feet above junction with 42, 
x. Miscellaneous items in Clayton Area. 
(1) Open the buried end of 24” culvert under 
river road about 150 feet from junction with Gaillard Highway. 
Extend dirt ditch to inlet of this ©ulvert to drain an area about 
100 feet east of inlet. (IN). 
(2) Construct culvert under River Road at a 
point about 500 feet from intersection with Gaillard Highway. 
Extend with one-half round invert tile to f*.er (ERD) 
(3) Drain or fill large hole in Clayton gar- 
dens about 450 feet northeast of end of ditch 23, (IN). 
(4) Regrade borrow pit to drain and remove 
road ditch obstruction at a point along the north side of River 
Road about 200 feet from the bridge across the Cardenas River. (IN). 
(5) Drain by the use of one-half round invert 
tile the swamp located about 100 feet southeast of ditch 25-A. (IN) 
(6) Fill extensive and deep ruts in temporary 
road through north end of Clayton gardens. (IN), 
(?) Fill extensive low areas now pooling 
water located in warehouse and lumber storage area located on the 
south side of hospital road about 450 feet northeast of junction 
of ditch 29 and 29-B, (IN). 
**Illegible 
58 (8) Fill low areas north of NCO quarters 
for Clayton Hospital. (IN). 
(9) Drain by the use of one-half round invert 
tile the swamp located northeast of the end of ditch 31, (IN). 
(10) Install one-half round invert tile along 
west side of road through the low cost housing area to drain into the 
24" culvert in ditch 30. (IN). 
(11) Drain by the use of one-half round invert 
tile the extensive swamp located northwest of ditch 29 about 400 
feet down stream from junction of 29 and 29~B. (IN). 
(12) Drain by the use of one-half round invert 
tile the swampy area located near the point at which ditch 29 
emerges from the 15” culvert under the officers’ quarters area. (IN). 
(13) Regrade area around water tank to elimi- 
nate pooling of water. (IN). 
(14) Regrade contractor’s area located about 
$00 feet northwest of junction 41-D-4 and 41~D-4-B. (IN). 
(1$) Eliminate pooling around ends of 2' x 3' 
culvert in 41-D-4 at junction with 41~D~4~A. (IN). 
(16) Fill low area now pooling water located 
about 350 feet west of junction of 41-D and 41-D-5. (IN). 
- i 
(17) Complete filling and sodding of the Coast 
Artillery quadrangle to eliminate all water pooling, (IN). 
(18) Connect in car wash drain for Infantry 
stable area with a pipe and install one-half round invert tile 
along toe of slopes to the Cardenas River. (IN). 
(19) Construct splash plate under end of one- 
half round tile drainiout 1$0 feet north of Gaillard Highway 
bridge over the Cardenas River. (IN). 
« 
(20) Clean and recondition end of ditch 38 
between Rio Grande and first culvert. Regrade upper section of 
ditch 38 to eliminate pockets. Install one-half round invert 
tile in ditch 38-A.(IN](Lower end of ditch 38 on Panama Canal 
property), 
(21) Install one-half round invert tile in 
upper section of ditch 40 to drain into existing rock drain. 
(IN). (Panama Canal property). 
(22) Drain by the use of one-half round invert 
tile the extensive water .*?ling between ditches 16 and 17. Fill 
around two sewer manholes in this same area. (IN). 
(23) Fill around sewer manhole between ditches 
21 and 22. (IN). 
**Illegible 
59 (24) Fill all ruts in temporary road along 
foot of slope paralleling Muir Ave, (IN), 
(25) Fill extensive and deep ruts in the 
several roads to smoke pots and outpost positions in the area 
between ditch 42 and the new bridge across the Canal. (IN). 
(Panama Canal property). 
(26) Drain by the use of one-half round 
invert tile extensive swamps for approximately 200 feet on both 
sides of ditch 29 from junction with 29-0 to junction with 
29-N. (LED). 
(27) Extend dirt ditch around upper side of 
barrage balloon area to drain into ditch 42-E-l. Install one- 
half round invert tile in entire system. (IN). 
y. Miscellaneous Improvements. 
(1) In all the areas of Clayton, not specif- 
ically covered by items in the foregoing, landscaping is to be 
definitely completed so that there will Remain no permanent low 
areas, depressions, unfilled ditches (except air raid trenches), 
open pits around valve boxes and fire hydrants or deep ruts. (IN), 
(2) A house to house and building to building 
survey is to be accomplished with special emphasis on one-half 
round invert tile roof drainage, the survey to insure that: 
(a) The roof drainage system is entirely 
completed and carried to a point of definite disposal. If the 
disposal is to a stream, the end point is to be completed so as 
not to cause potholes or erosions in the ditch slopes or inverts. 
If discharge is on the ground or hillside, a small area is to be 
paved at the end of the tile. 
(b) There will be no appreciable amount 
of water trapped in the drains. The drains will first be thor- 
oughly cleaned and if after cleaning water remains in any drains 
in excess of one-half inch, the drain will be regraded. (IN). 
(3) Straighten the Cardenas River at points 
opposite ditches 19 and 24, filling the old river channel and 
extending existing ditches to the new channel. (LED). 
60 LEGEND 
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WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEr 
MALARIA CONTROL 
FORT CLAYTON, CZ. 
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of section 7 of accompanying report, 
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WA R DC.PARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
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DEPUTY DEPT COMMANDER 
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PANAMA CANAL DEPARTMENT 
19 OCTOBER 1943 
61 8. SPECIFIC REPORT ON OUTLYING AREA (AREA NO, 5). 
a. Area included. Territory on both sides of 
engine test road, Albrook-Clayton road, Corozal - Clayton road, 
Albrook magazine road and vicinities of dispersion warehouses 
and Clayton Hospital, all as shown on accompanying Map M.C. 9. 
b. Drainage system No. 11. (Continued from 
Albrook Field Maps M.C, A, M.C. 5 and M.C. 6.). 
(1) Ditch 11-G. Straighten and pave invert 
and side slopes from junction with ll-G-12, to end. Install 
one-half round invert tile in all tributaries above l-G-16. (LRD) 
Improve the flow characteristics of this last mentioned section 
by simple regrading and removing various obstructions from 
channels. Avoid the destruction of shade, (IN). 
(2) Ditches ll-G-13, 11-G-1A. ll-G-15. ll-G-16 
and 11-G-16-A. Install one-half round invert tile, (IN). 
(3) Ditch 11-L. Straighten and pave invert 
and side slopes from Junction with 11-L-ll to junction with ll-L-12. 
(LRD). Improve the flow characteristics of this last mentioned section by 
simple regrading and removing various obstructions from channels. 
Avoid the destruction of shade. (IN), Pave invert from junction 
with ll-L-12 to a point 50 feet upstream from Albrook magazine 
road and from a point 100 feet below the 61 x 5* culvert under 
Albrook-Clayton Highway to a point 100 feet above junction with 
11-L-1A. (IN), Pave remainder of invert from junction with 
ll-L-12 to end and pave the side slopes of this entire section. 
(LRD), Improve the flow characteristics of this last mentioned 
section by simple regrading and removing various obstructions from 
channels, avoid the destruction of shade, (IN) 
(A) Ditches ll-L-12 and 11-L-12-A. Install 
one-half round invert tile, (IN). 
(5) Ditch 11-L-13. Install one-half round 
invert tile from junction with 11-L to a point 100 feet above 
junction with ll-L-13-a. (IN). 
(6) Ditch II-L-13-a. Install one-half round 
invert tile for 50 feet above junction with ll-L-13, (IN). 
(7) Ditch 11-L-1A. Straighten and install 
one-half round invert tile from junction with 11-L to a point 
100 feet above junction with 11-L-1A-D. (IN). 
(8) Ditches 11-L-1A-C and 11-L-1A-D, Install 
one-half round invert tile""] (iN), 
(9) Ditch 11-Z, Install one-half round invert 
tile from 2A" culvert under highway and about 300 feet above junc- 
tion with ll-Z-9 to junction with 11-Z-ll. (NFD) Above this point 
stream is well shaded but is characterized by extensive pooling. 
63 Install one-half round invert tile from junction with 11-Z-ll to 
end of water. (LED). Improve the flow characteristics of this 
last mentioned section by simple regrading and removing various 
obstructions from channels. Avoid the destruction of shade. (IN), 
(10) Ditch ll-Z-9. Install one-half round 
invert tile for 100 feet above **" culvert under Albrook-Clayton 
Road. (NFD). Above this point, stream is well shaded but has 
pooling characteristics. Install one-half round invert from the 
100 foot point to end of water. (LRD). Improve the flow charact- 
eristics of this last mentioned section by simple regrading and 
removing various obstructions from channels. Avoid the destruction 
of shade. (IN). 
(11) Ditch ll-Z-10. Install one-half round 
invert tile for 50 feet above *,*. culvert under Albrook -Clayton 
Road. (NFD). 
c, Drainage system No. 12. (Continued from Al- 
brook Map M.C. 5)o 
(1) Ditch 12-C. Pave invert and side slopes 
from 36n culvert near junction with 12-Q-3 to a point 200 feet 
above junction with 12-G-17. (NFD). Install one-half round 
invert tile from this latter 200 foot point to end of line. (LRD). 
Improve the flow characteristics of this last mentioned section 
by simple regrading and removing various obstructions from channels. 
Avoid the destruction of shade. (IN). 
(2) Ditch 12-G-B. Install one-half round 
invert tile from junction with 12-8 to 20 feet above 20n culvert. 
(IN). 
(3) Ditch 12-G-9. Install one-half round 
invert tile from junction with 12-G-tc end. Remove temporary 
10" culvert and reset 24" culvert under highway at junction with 
12-G-9-A, if this is necessary to eliminate trapped water in 
culvert. (IN). 
(4) Ditch 12-G-9-A. Install one-half round 
invert tile. (IN). 
(5) Ditches 12-G-10, 12-G-ll. 12-G-12, 
12-G-I3, 12-G-13-A and 12-G-14. Install one-half round invert 
tile. (IN). 
(6) Ditch 12-G-15. Fill, connecting the 20" 
culvert under engine testrrcad into ditch 12** with one-half round 
invert tile. (IN). 
(7) Ditch I2-G-16. Install one-half round 
invert tile from junction with 12-G to next 20" culvert. Regrade 
ditch above 20" culvert to eliminate pooling at upper end, (IN), 
(B) Ditch 12-G-17. Install one-half round 
invert tile from junction with 12-G to next 20" culvert. (IN). 
64 
*^Illegible (9) Ditch'12-G-4. Pave invert and side 
slopes from the two 36" culverts just below junction with 
12-G-4-C to a point 100 feet above junction with 12-G-4-K. (NFD) 
Pave invert and side slopes from this latter point to a point 
*.K>0 feet below junction with 12-G-4-N. (LED). Improve the flow 
characteristics of this last mentioned section by simple regrad- 
ing and removing various obstructions from channels, avoid the 
destruction of shade. (IN). From the point 100 feet below 
junction with 12-G-4-N, install one-half round invert tile to a 
point *t00 feet above junction with 12-G-4-Q. (IN). From this 
latter point install one-half round invert tile to end of system. 
(LRD). Improve the flow characteristics of this last mentioned 
section by simple regrading and removing various obstructions 
from channels. Avoid the destruction of shade. (IN). 
(10) Ditches 12-G-4-C. 12-G-4-C-1. 
12-G-4-D. 12-G-4-D-1. and 12-G-4-D-2. Install one-half round 
invert tile. (IN). 
(11) Ditch 12-G-4-E. Straighten and install 
one-half round invert tile, (LED). Improve the flow characteris- 
es of this last mentioned section by simple regrading and remov- 
ing various obstructions from channels, avoid the destruction of 
shade, (IN). 
(12) Ditch 12-G-4-F. Install one-half round 
invert tile from junction with 12-G-4 to 200 feet above junction 
with 12-G-4-F-2. (IN). 
(13) Ditches 12-G-4-F-1. 12-G-4-F-1-A and 
12-G“4-F-1-B. Install one-half round invert tile. (IN). 
(14) Ditch 12-G-4-F-2. Install one-half round 
tile from junction with 12-G-4 to 200 feet above this junction. (IN), 
(15) Ditch 12-G-4-F-2-a. Install one-half 
round invert tile from junction with 12-G-4-F-2 to 50 feet above 
this junction. (IN). 
(16) Ditch 12-G-4-G. Install one-half round 
invert tile from junction with 12-G-4 to a point 100 feet past 
east wall of dispersion warehouse, projected. Fill all holes in 
ditch above this point. (IN). 
(17) Ditch 12-G-4-H. Install one-half round 
invert tile. (IN). 
(18) Ditch 12-G-4-J. Install one-half round 
invert tile. (IN). 
(19) Ditch 12-G-4-J-1. Install one-half round 
invert tile, (IN) 
(20) Ditch 12-G-4-J-2. Install one-half 
round invert tile from junction with 12-G-4-j to 24" culvert. 
Pave around inlet to 24" culvert. (IN). 
**Figure illegible 
65 Ul) Ditches 12-G-4-K and 12-G-4-L. Install 
one-half round invert tile. (IN). 
(22) Ditch 12-G-4-M. Install one-half round 
invert tile. (LRD.) Improve the flow characteristics of this 
last mentioned section by simple regrading and removing various 
obstructions from channels. Avoid the destruction of shade. (IN), 
(23) .Ditches 12-G-4-N. 12-G-4-N-1 and 12-G-4-N-2. 
Install one-half round invert tile, filling low areas adjacent tc 
these ditches, (IN). 
(24) Ditch 12-G-4-N-3. Regrade. (IN). 
(25) Ditch 12-G-4-0. Install one-half round 
invert tile, (IN), 
(26) Ditches 12-G-4-F and 12-G-4-P-1, Regrade 
to eliminate pooling of water. (IN). 
(27) Ditch 12-G-4-0 Install one-half round 
invert tile from junction with 12-G-4 to a point 450 feet above 
this junction. (IN), Install one-half round invert tile from 
this latter point to end of ditch. (LRD). Improve the flow char- 
acteristics of this last mentioned section by simple regrading and 
removing various obstructions from channels. Avoid the destruction 
of shade, (IN), 
d. Miscellaneous items in areas tributary to 
Drainage Systems 11 and 12. 
(1) Fill all ruts, depressions, unfilled valve 
boxes, etc,, along the entire Albrook magazine road. Regrade road 
ditches at points where they are retaining water. Eliminate by 
the use of one-half round invert tile and sub-soil drains the 
seepage area along this road at a point south of the Las Cruces 
supply storage yard. (IN), 
(2) Fill extensive and deep ruts in road loop 
northwest of 61 x 6’ box culvert under Clayton - Albrook Highway 
in ditch 11-G. (IN). 
(3) Drain swamp located 50 feet east of 
intersection of ditches 11-L and ll-L-12 into 11-L. (IN), 
(4) Regrade area at Albrook Gun Club between 
ditches 12-G-10 and 12-G-12. (IN). 
(5) Eliminate extensive pooling of water 
along east side of ditch 12-G-9 from junction with 12-G-9-A to 
end by the use of fill and one-half round invert tile. (IN). 
(6) Eliminate by the use of fill and one-half 
round invert tile the swampy area located about 150 feet north- 
east of Albrook Gun Club Clubhouse. (IN). 
66 (7) Fill the low area between ditches 12-G 
and 12-G-14 to drain into these ditchesQ (IN)„ 
(8) Install one“half round invert tile sys- 
tem and culvert under highway for the area northeast of the 
Tucker McClure barracks area in general accordance with layout 
indicated on Map M.C. 9. (IN). 
(9) Eliminate by the use of fill and one- 
half round invert tile the swampy area in the V between ditches 
12-G-4-C and 12-G-4-C-1. (IN). 
(10) Eliminate by the use of one-half round 
invert tile and sub-soil drains the seepage areas along the west 
side of ditch 12-G-4-F-1. (IN). 
(11) Eliminate by the use of one-half round 
invert tile and fill the swampy area between ditch 12-G-4-F and 
the dispersion warehouse road. (IN). 
(12) Fill ruts, trenches and holes in area 
between ditch 12-G-4 and dispersion warehouse road. (IN). 
(13) Fill old ditch channel in V between 
ditches 12-G-4 and 12-G-4-H. (IN). 
(14) Fill ruts and depressions in dumping 
area southeast of ditch I2-G-4-J-2. (IN). 
(15) Eliminate by the use of one-half round 
invert tile and fill the extensive swamp located about 100 feet 
north of the end of ditch 12-G»4~L. (IN). 
(16) Eliminate the extensive swampy area 
located about 100 feet east of the engine test plant by regrad- 
ing it to drain into ditches 12-G-4 and 12-G-4-0. (IN). 
(17) Fill or drain large hole at southwest 
corner of engine test plant office building. (IN). 
(13) Repair leaky fire hydrant in engine 
test plant area. (IN), 
(19) Fill large holes located about 100 feet 
and 200 feet respectively west of the engine test plant office. 
(IN). 
© Drainage system No. 43. 
(1) Straighten and install one-half round 
invert tile in this entire system from the Cardenas River to the 
two 12M culverts and the three 24" culverts. (IN). Install one- 
half round invert tile above the three 24" culverts. (LRD). Im- 
prove the flow characteristics of this last mentioned section by 
simple regrading and removing various obstructions from channels. 
Avoid the destruction of shade. (IN). 
67 f. Drainage system No0 2$. 
(1) Ditch 25-A. Install one-half round 
invert tile. (LRD). 
(2) Ditch 25-A-l Clean and repair. (IN). 
g. Drainage s:,rstem No. 45. 
(1) Ditch 45. Straighten and pave invert and 
side slopes from a point f*00 feet below junction with 45-B to a 
point 100 feet above junction with 45-0. Straighten and pave 
invert and side slopes from a point 100 feet below junction with 
45-J to a point 50 feet beyond fence around gasoline reserve 
storage area and about ..00 feet above junction with 45-T. Areas 
adjacent to sides of ditch to be filled and graded as required 
to accomplish complete drainage for the area. All of above (IN). 
Straighten and pave invert and side slopes of remainder of ditch 
from Cardenas River to end. (LED). Improve the flow character- 
istics of this last mentioned section by simple regrading and 
removing various obstructions from channels, avoid the destruct- 
ion of shade. (IN). 
(2) Ditch 45-a. Install one-half round 
invert tile for 100 feet below and above 24" culvert located 
about 400 feet above junction with 45. (IN). Install one-half 
round invert tile in remainder of this ditch. (LRD). Improve 
the flow characteristics of this last mentioned section by simple 
regrading and removing various obstructions from channels. Avoid 
the destruction of shade. (IN). 
(3) Ditch 45°A-1. Install one-half round 
invert tile. (IN). 
(4) Ditch 45-A-2. Install one-half round 
invert tile for 30 feet above junction with 45-A. (IN). 
(5) Ditch 45-B. Install one-half round 
invert tile from junction with 45 to end. (IN). 
(6) Ditch 45-B-l. Install one-half round 
invert tile. (LRD). 
(7) Ditch 45-C. Drain and fill this ditch 
which is the old stream channel. By deepening ditch 45 from 
junction with 45-B to junction with 45-B, almost total drainage 
of 45-0 can be accomplished requiring a minimum of filling to 
eliminate this extensive pool. (IN), 
(8) Ditch 45-D. Install one-half round 
invert tile. (IN). 
** figure illegible 
68 (9) Ditch 45-E. Install one-half round in- 
vert tile for 100 feet above junction with 45« (IN) Install 
one-half round invert tile in remainder of ditch0 (LED). Im- 
prove the flow characteristics of this last mentioned section by- 
simple regrading and removing various obstructions from channels. 
Avoid the destruction of shade. (IN), 
(10) Ditch 45-F. Pave invert and side slopes 
from junction with 45 to junction with 45-F-9. Install one-half 
round invert tile above this point. (IN), 
(11) Ditches 4-5-F-l, 45-F-2. 45-F-3. 45-F-4. 
45-F-5. A5-F-7. A6-F-8. and 4.5-F-IO. Install one-half 
round invert tile in all of these ditches including all the 
branch laterals to them, (IN). 
(12) Ditch 45-F-6. Install one-half round 
invert tile for 200 feet above junction with 45-F. (LED). 
(13) Ditch 45-G. Eeplace with sub^soil 
drain. (IN). 
(14) Ditch 45-H. Install one-half round 
invert tile from junction with 4-5 to 200 feet above junction with 
45-H-4. (IN). Install one-half round invert tile from this 
latter point to end, (LED). Improve the flow characteristics 
of this last mentioned section by simple regrading and removing 
various obstructions from channels. Avoid the destruction of 
shade. (IN). 
(15) Ditch 45-H-l. Install one-half round 
invert tile from junction with 45-H to 350 feet above junction 
with 45-H-l-A. (IN). 
(16) Ditches 45-H-l-A and 45-H-l-B. Install 
one-half round invert tile for 100 feet above junction with 45-H-l. 
(IN). 
(17) Ditch 45-H-2. Install one-half round 
invert tile from junction with 45-H to 20 feet above 24" culvert 
under Clayton-Albrook Highway. (IN). 
(X&) Ditch 45-H- 3. Install one-half round 
invert tile including the tributary road ditch system on the 
north side of Los Cruces supply storage yard. (IN). 
(19) Ditch 45-H-4. Install one-half round 
invert tile from junction with 45-H to 30 feet above next cul- 
vert. (IN). 
(20) Ditch 45-J. Install one-half round in- 
vert tile with laterals as required to drain completely the ex- 
tensive swamp at the upper end of this system, (IN). 
69 (21) Ditch 45-K. Straighten and pave invert 
and side slopes from junction with 45 to 100 feet above 12" cul- 
vert across trail. Replace the 12" culvert with a culvert 6f 
adequate capacity tr remove entirely if this trail is to be aban- 
doned. (IN). Install one-half round invert tile from this point 
to end of system. (LRD). Improve fhe flow characteristics of 
this last mentioned section by simple regrading and removing 
various obstructions from channels. Avoid the destruction of 
shade. (IN). 
(22) Ditch 45-L. Straighten and install one- 
half round invert tile. Remove 6" and 12" temporary culverts 
and fill area on both sides of ditch to drain to it. (IN). 
(23) Ditches 45~M. 45-M-l. 45-N and 45-N-l. 
Straighten and install one-half round invert tile. (IN). 
(24.) Ditch zi5-0. Straighten, ffill and 
install one-half round invert tile. (IN). 
(25) Ditches 45-P. 45-C‘ and 45-R. Combine 
insofar as practicable and install one-half round invert tile. (IN). 
(26) Ditch 45-S. Install one-half round 
invert tile to 50 feet beyond fence enclosure. (IN). Install 
one-half round invert tile for remainder of system. (LRD). 
Improve the flow characteristics of this last mentioned section 
by simple regrading and removing various obstructions from 
channels, avoid the destruction of shade. (IN). 
h. Drainage system No. 44. 
(1) Ditch 44. Install one-half round invert 
tile. (LRD). 
* 
i. Drainage system No. 46. 
(1) Install one-half round invert tile in 
entire system. (IN). 
1* Drainage system No. 47. 
(1) Ditcfy 47. Pave invert and side slopes 
from Cardenas River to junction with 47-a. (LRD). Improve the 
flow characteristics of this last mentioned section by simple 
regrading and removing various obstructions from channels. Avoid 
the destruction of shade. Pave invert and side slopes from junc- 
tion with 47-A to junction with 47-D. (NFD). Install one-half 
round invert tile in the remainder of ditch 47 and all of its 
tr ibutar ie s. (IN). 
k. Drainage system No. 4B. 
(1) Install one-half round invert tile in 
this entire system. (IN). 
70 l. Drainage system No. 49. 
(1) Install one-half round invert tile with 
laterals as required to completely drain the adjacent area. (IN). 
m. Drainage system No. 10. 
(1) Ditch 10-K. Install one-half round 
invert tile for 100 feet below 24" culvert and for $0 feet above 
it. (IN). 
(2) Ditch 10-K-l. Install one-half round 
invert tile for 100 feet above 24" culvert, (IN). 
n. Miscellaneous items in area tributary to 
drainage systems 44 to 49 inclusive. 
(1) Fill extensive ruts in road over 16” 
culvert in ditch 43. (IN). 
(2) Fill around sanitary sewer manhole and 
complete backfilling of trench at foot of highway; fill slope 
about 200 feet north of end of ditch 46. (IN). 
(3) Fill large hole now impounding water 
at a point about 100 feet north of end of ditch 46-L, (IN). 
(4) Complete backfilling tranch along trail 
located generally along line between intersections of ditches 
45 with 45-F and 45 with 45-J. (IN) 
(5) Complete landscaping the gasoline reserve 
area so that it will rain into the system of paved ditches pro- 
posed under preceding paragraphs so that there will be left no 
ruts, holes, depressions, etc. to retain water. (IN). 
(6) Fill ruts in trail loading from Albrook - 
Clayton Highway to 12" culvert in ditch 45-K. (IN). 
(7) Eliminate swampy and seepage areas along 
west side of Clayton-Albrook Highway between ditches 45-H-l and 
45-H by the use of fill and one-half round invert tile. (IN), 
(8) Completely recondition the shoulders 
and side ditches of the Clayton -Albrook Highway between Clayton 
Hospital and the concrete batching plant at albrook Field so that 
no water is retained by them. (IN). 
71 NOTE■ Notations in circles thus (c*)refer to subdivisions 
Of section 6 of accompanying report, 
LEGEND 
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WAR DEPARTMENT 
PA NAM A CANAL DEPARTMENT 
DRAINAGE .SURVEY 
MALARIA CONTROL 
OUTLYING AREA ALONG 
ALBROOK-CUAYTON HI way 
jpFFICF OF THE PERT. 3UBQEOM 
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CAPT.. C. B. j CONTINUATIDNCOF 
MATERIA CONTROL - DRAINAGE SURVEY 
PANAMA CANAL DEPARTMENT 
2 NOVEMBER 1943. 
73 9. SPECIFIC REPORT ON FORT KQBBS AND HOWARD FIELD 
(AREA NO. 6). 
a. Area included - Fort Xobbe, Howard Field and 
vicinity as indicated by accompanying Maps M.C, 10, M*0. 11, M.C. 12 
and M.C, 13. 
b. Drainage system No, 50. 
(1) Ditch 50, 
(a) Deepen and improve channel downstream 
from junction with 50-A until well defined flow is maintained at 
low tide. (LRD). 
(b) Pave invert and side slopes from 
junction with 50-A to the three 30” culverts near junction with 
50-E. (LRD). 
(c) Pave invert and side slopes from the 
last mentioned three 30n culverts to junction with 50-K, (IN), 
(d) Install one-half round invert tile 
from junction with 50-K to the A? x A* culvert near junction with 
50-Q, Clean and repair from junction with 50-Q to junction with 
50-Z and install one-half round invert tile from junction with 
50-Z to end of system. (IN), 
(2) Ditch 50-A. Pave invert and side slopes. 
(LRD). 
ft 
(3) Ditch 50-B, 
(a) Pave invert and side slopes from 
junction with $0 to junction with 50-B-l. (LRD)0 
• » 
(b) Pave invert and side slopes from 
junction with 50-B-l to junction with 50-B-10, (IN), 
(cjT Install one-half' round invert tile 
from junction with 50-B-10 to end of system. (IN). 
(A) Ditches 50-B-l to 50-B-1Q inclusive. 
Regrade and install one-half round invert tile in all of these 
ditches, including the tributaries indicated. Completely recon- 
dition the drainage system for the revetment area between the 
hangars and the east side of the north and south runway. At the 
present this area is characterized by low spots and ditches 
impounding water, together with numerous ruts. To eliminate 
this hazardous condition, regrade individual revetment ditches, 
installing one-half round invert tile in those that are contin- 
ually fed by ground water seepage and fill the low areas and 
ruts until the whole area becomes a dry and adequately drained 
locality. (IN) 
75 (5) Ditch 50-C. Pave invert and side slopes 
from junction with 50 to the beginning of the existing paved 
section near Howard Avenue. (LED). Install one-half round 
invert tile from 24" culvert at Howard Ave. to end of system. (IN). 
(6) Ditch 50-C-l. Pave invert and side slopes 
from junction with 50-C to junction with 50-C-I-a. (LED). Pave 
invert and side slopes from junction with 50-C=.l-A to the 30H 
culvert about 300 feet above junction with 50-C-l-C, (IN). Com- 
plete roof drainage system at upper end. (IN). 
(7) Ditches 50-C-l-A. 50-C-l-B and 50-C-l-C. 
Install one-half round invert tile, including the tributaries 
indicated. (IN), 
(8) Ditch 50-C-2. Install one-half round 
invert tile from junction with 50-C to 12” culvert under Howard 
Ave. (IN). 
% 
(9) Ditch 50-C-3. Install one-half round 
invert tile including the indicated tributary. (IN). 
(10) Ditch 50-C-4. Install one-half round 
invert tile. (IN). 
(11) Ditch 50-C-5. Install one-half round 
invert tile. (IN). 
(12) Ditch 50-D. Pave invert and side slopes 
from junction with 50 to junction with 50-D-l. Install one-half 
round invert tile from this latter point to the 12 M culvert at 
junction with 50-11-3. (IN). 
(13) Ditch 50-D-l. Install one-half round 
invert tile. Include tributaries and new laterals as required 
to drain the swampy area §.t the upper end of this system, (IN), 
(14) Ditch 50-D-2. Dig new channel from 
lower end of 50-D-2 which now terminates in a swamp to junction 
of 50-D with 50. Install one-half round invert tile from this 
latter point to 20 feet above 24" culvert under Howard Ave. 
Regrade 50-D-2 above this point to end of system. (IN). 
(13) Ditch 5Q-D-2-A. Install one-half round 
invert tile. (IN). 
i 
(16) Ditch 5Q-D-2-B. Install one-half round inverted 
tile. (LED). 
(17) Ditch 50-D-2-C, Regrade. (IN). 
(18) Ditch 5Q-E. Pave invert and side slopes 
and/or install concrete storm sewer from the junction with 50 
to the existing storm sewer near junction with 50-E-3. (IN). (19) Ditch 50-E-l. Install one-half round 
invert tile from junction with 50-E to 20 feet above junction with 
50-E-l-A. (IN). 
(20) Ditch 50-E-l-A. Install one-half round 
invert tile from junction with 50-E-l to junction with 50-E-l-A-l. 
(IN). 
(21) Ditch 5Q-E-2. Install one-half round 
invert tile from junction with 50-E”to end. (IN). 
(22) Ditch 50-E-2-A. Install one-half round 
invert tile from junction with 50-E-2 to end connecting in car 
washing rack at end. (IN). 
(23) Ditch 50-E-2-B. Install one-half round 
invert tile, (LRD), 
(24) Ditches 50-F. 50-G. 5Q-H and 50-J. 
Install one-half round invert tile. (IN). 
(25) Ditch 50-K. Install one-half round 
invert tile from junction with 50 to junction with 50-K-10, includ- 
ing culvert under street. Divert into 50-E at junction with 50-K-7, 
(IN). Install one-half round invert tile from junction with 
50-K-10 to end of system, (LRD), 
(26) Ditches 50-K-l and 50-K-2. Install one- 
half round invert tile, (IN), 
(27) Ditch 50-K-3. Install one-half round 
invert tile. Include culvert under street with fill and laterals 
as required to eliminate the pooling of water at the upper end. 
Install one-half round invert tile in the loop and tributaries.(IN). 
(28) Ditches 5Q-K-4 and 5Q-K-5. Install oDo- 
ha If round invert tile. Eliminate water pooling in abandoned 
obstacle course area near ends of these ditches. (IN), 
(29) Ditches 50-K-6. 50-K-6~a and 5Q-K-6-A-1. 
Install one-half round invert tile with new culvert under road.(IN). 
(30) Ditch 50-K-7. Install one-half round 
invert tile for 50 feet above junction with 50-K. (IN). 
(31) Ditches 50-K-8 and Install one- 
half round invert tile with laterals and fill as required to dry- 
up seepage areas at upper ends. (IN), 
(32) Ditch 50-L. Install one-half round 
invert tile. (IN). 
(33) Ditch 50-M. Install one-half round in- 
vert tile in sections now unpaved from junction with 50 to 20 feet 
above junction with 50-M-8. Clean entrance to culvert at junction 
with 50-M-7. (IN). 
77 (34) Ditch 50-M-l. Regrade. (IK). 
(35) Ditch 50-M-2. Install one-half round 
invert tile for 110 feet above junction with 50-Mo 
(36) Ditches 50-M-3. 50-M-X. 50-M-5. 50-M-6 
and 50-M-Bo Install one-half round invert tile extending 50-M-B 
to drain low area at its upper end. (IK). 
(37) Ditch 50-N. Install one-half round 
invert tile from junction with 50 to 50 feet above junction 
50-N-2. Include ditch 50-N-l. (IN). 
(38) Ditch 50-P. Install one-half round 
invert tile for 20 feet above junction with 50. (IN). 
(39) Ditch 50-Q. Install one-half round 
invert tile. (IN), 
(40) Ditch 50-Q-l. Install one-half round 
invert tile. (LRD). 
(41) Ditches 50-R and tributaries. Install 
one-half round invert tile in this entire system. Extend 50-R-3 
with laterals and fill as required to eliminate pooling near 
upper end of this ditch. (IN). 
(42) Ditch 50-Y. Regrade. (IN), 
(43) Ditches 50-W and 50-Y. Install one- 
half round invert tile. (IN). 
(44) Ditch 50-Z. Install one-half round 
invert tile from junction with 50 to within 100 feet of upper end, (IN), 
/ 
(45) Ditch 50-X. Cut new channel from junction 
of 50-C with 50 to lower end of 50-K. Install one-half round invert 
tile from junction with 50 to end. Include ditch 50-X-2. (IN), 
(46) Ditch 50-X-l. Clean several uprooted 
trees from across this channel. (IN). 
c. Miscellaneous items in area tributary to 
drainage system No. 50. 
(1) Fill, regrade and install one-half round 
invert tile as required to eliminate extensive pooling of water 
in contractor’sarea about 500 feet east of operations hangar. (IN), 
(2) Fill, regrade and install one-half round 
invert tile as required to eliminate extensive pooling of water 
in area about 200 feet east of the base signal warehouse and 
install adequate roof drainage system for this building. (IN). 
78 (3) Install one-half round invert tile 
around foot of cut for barracks located about 300 feet southeast 
of Ditch $0-C. Regrade and fill ruts around these barracks. (IN) 
(4) Fill and install one-half round invert 
tile to eliminate swampy area located about 200 feet southeast 
of end of ditch $0-C-$. Drain into $0-C-$ or $0-E, (IN) 
($) Fill large hole about 200 feet east of 
junction of 50-C-l-D and $0-0. (IN). 
(6) Complete grading around sewage treat- 
ment plant. (IN). 
(7) Cover open manhole about 100 feet west 
of junction of $0-X and $0-X-l. (IN). 
(8) In the low cost housing area, fill the 
numerous holes left by incompleted construction activities, ruts, 
low areas and holes around concrete piers. Drain air raid trench- 
es located near end of ditch B-24. (IN). 
(9) Fill holes in area between $0-P and 
50-R-l. (IN). 
(10) Fill low area about 200 feet northwest 
of end of ditch $0-M-2. (IN), 
(11) Fill holes, ruts and low areas in area 
between $0-D and 50-D-2. (IN), 
(12) Recondition inlet to 12° culvert in 
$0-D-3 under Howard ave. and regrade around building used as 
boxing areas. (IN), 
(13) Repair valve in water system near end 
of 50-D-2-B. (IN), 
(14.) Fill hole near end of 2 -30n culverts 
in ditch $0-E under Howard Ave. (IN). 
(1$) Install new one-half round invert tile 
to drain area located about 100 feet north of junction of $0-K 
and $0-K-7. (IN). 
(16) Fill holes located 600 feet south of 
junction of $0-C and $0-C-4 and 450 feet southwest of this same 
junction. (IN), 
(17) Regrade around officers’ quarters, build- 
ings located 400 feet southeast of junction of $0-K and $0-K-10 
and 600 feet northeast of this same junction. (IN), 
79 d. Drainage system No. 51. 
(1) Ditch 31. 
(a) Pave invert and side slopes from a 
point 1300 feet downstream from junction with 51-a to the 2 - 30” 
culverts about 100 feet downstream from junction with 51-L. (LED) 
Improve flow characteristics of this section by simple regrading 
and removal of obstructions from channel. Avoid the destruction 
of shade 0 (IN). 
(b) Install one-half round invert tile 
from the last mentioned 2 - 30” culverts to end of system. (IN)* 
(2) Ditch 51-A. Pave invert and side slopes. 
Fill old channel which crosses this ditch about 200 feet above 
junction with 51- (IN). 
(3) Ditches 51-B. 51-C and 51-Do Install 
one-half round invert tile including the several tributaries 
indicated. Ditches 51fC and 51-D are old ditch channels cut off 
from their normal water sheds by a diversion ditch and are prac- 
tically stagnant with large numbers of pools. (IN). 
U) Ditches 51-E, 51-G. 51-L and 51-M. See 
subsequent report for recommendations for these ditches, 
(5) Ditch 51-N. Install one-half round 
invert tile. Include tributaries and extend as required together 
with necessary fill to eliminate pooling of water near end of IB" 
culvert. (IN). 
(6) Ditches 51-P« 51-Q and 51-H. Install 
one-half round invert tile, including tributary indicated. (IN). 
(7) Ditch 51-F. Pave invert and side slopes 
from junction with 51 to a point **00 feet above junction with 
51-F-8. 
(B) Ditch 51-F-4,. Pave invert and side slop- 
es from junction with 51~F to junction with 51-F-4-D. Install 
one-half round invert tile for 600 feet above this latter point. 
(LED). 
(9) Ditch 51-F-4.-A. Regrade, fill around 
and install one-half round invert tile to completely drain the 
area adjacent to this ditch. (IN). 
(10) Ditches 51-F-R-B. 51-F-A-G and 51-F-A-P. 
Install one-half round invert tile. (IN). 
** Illegible 
80 (11) Ditch 5X-F-5. Install one-half round in- 
vert tile from junction with 51-F to a point about 100 feet above 
the 12 inch culvert located about 200 feet above junction with 
51-F-5-G. Straighten, regrade and fill as required to completely 
drain this system which at present is totally trapped at one 
point and is little more than a series of large, stagnant pools 
of water from junction with 51-F-5-E to the 12" culvert previous- 
ly mentioned. (IN). 
(12) Ditch 51-F-5-A. Install one-half round 
invert tile with laterals as required to drain swampy area at 
upper end. (IN). 
(13) Ditch 51-F-5-B. Install one-half round 
invert tile. (IN), 
(14) Ditch 51-F-5-C. Install one-half round 
invert tile for 110 feet above junction with 51-F-5. (IN). 
(15) Ditches 51-F-5-D.and 5I-F-5-D-1. Install 
one-half round invert tile. (IN). 
(16) Ditch 51-F-5-D-2. Install one-half 
round invert tile with laterals and fill as required to dry up 
swampy area at upper end. (IN). 
(17) Ditch 51-F-5-D-3. Install one-half round 
invert tile for 100 feet above junction with 51-F-5-D. (IN). 
(18) Ditches 51-F-5-E. 51-F-5-F and 51-F-5-G. 
Install one-half round invert tile. (IN). 
(19) Ditch 51-F-6. Install one-half round 
invert tile. Include tributaries indicated with laterals as 
required to dry up swampy area at upper end. (IN). 
(20) Ditch 51-F-7. Install one-half round 
invert tile from junction with 51-F to the outlet of the 12n 
culvert located about 200 feet above junction with 51-F-7-G.(IN). 
(21) Ditch 51-F-7-A. Install one-half round 
invert tile for 50 feet above junction with 51-F-7. (IN). 
(22) Ditch 51-F-7-B. Install one-half round 
invert tile from junction with 51-F-7 to end of system. Eliminate 
the loop indicated, with fill, (IN), 
(23) Ditches 51-F-7-B-1. 51-F-7-B-2 and ' 
51-F-7-B-3. Install one-half round invert tile. (IN). 
(24.) Ditch 51-F-7-C. Install one-half round 
invert tile in the section between the first 2 - 12" culverts 
in the system. (IN). 
81 (25) Ditch 51-F-7-D. Install one-half round 
invert tile and include the several tributaries indicated, (IN). 
(26) Ditch 51-F-7-E. Install one-half round 
invert tile and include the several tributaries indicated, (IN). 
(27) Ditch 51-F-7-F. Install one-half round 
invert tile. (IN), 
(28) Ditch 51-F-7-G, Install one-half round 
invert tile and include the tributary indicated, (IN). 
(29) Ditches 51-F-7-H and 51-F-7-J. Install 
one-half round invert tile for 20 feet above junctions with 
51-F.7. (IN), 
(30) Ditch 51-F-8. Install one-half round 
invert tile, (IN), 
(31) Ditch 51-H. Install one-half round in- 
vert tile with laterals as required to dry up swampy area near 
junction with 51-H-l. (IN), 
(32) Ditches 51-H-l. 51-J and 51-K and 
tributaries. Regrade as required to eliminate local pooling 
of water, (IN). 
e. Miscellaneous items in area tributary to 
drainage system No. 51. 
(1) Eliminate numerous pools of water along 
banks of ditch 51 from point 1300 feet below junction with 51-A 
to junction with 51-F. Simple regrading will suffice. (IN), 
(2) Fill and/or draincrea bounded generally 
by the west side of the north and south runway and ditch 51-F 
between junctions with 51-F-4 and 51-F-8. At the present time, 
this area is a veritable mass of impounded water consisting of 
swamps, uprooted tree holes, old ditch channels whose normal 
water-sheds have been diverted, deep and extensive ruts and low 
areas trapped by excavation, (IN), 
(3) Regrade area located along projection 
of south end of the west side of the north and south runway. (IN). 
{A) Fill and/or drain extensive swampy area 
in V between ditches 51-C-2 and 51-C-2-A. (IN), 
82 f. Drainage system No, 52. 
(1) Ditch 52. 
(a) See subsequent report for recommenda- 
tions below road culvert located about 4.00 feet below junction with 
52-A. 
(b) Improve channel by simple regrading 
and removal of obstructions from last mentioned culvert to 
beginning of existing paved section. (IN). Install one-half 
round invert tile in this same section. (LED). 
(c) Clean section above junction with 
52- and regrade if this does not eliminate the pooling of water. 
(IN). 
(d) Eliminate a seepage area located 
about 150 feet below junction with 52-B by the use of a sub-soil 
drain. (IN). 
(2) Ditches 52-A and 52-B. Install one- 
half round invert tile. (LED). 
(3) Ditch 52-E„ Regrade 12" culvert under 
railroad at lower end of this ditch to permit total drainage. (IN). 
g. Drainage system No. 53. 
(1) Ditch_J)j?o 
(a) Deepen and improve channel down- 
stream from junction with 53-a until definite flow is maintained. 
(LED). 
(b) Pave invert and side slopes from 
junction with 53-a to beginning of existing paved section. (LRD). ' 
Pave side slopes from the latter point to junction with 53-J. 
(LRD). Recondition side walls from junction with 53-B to end. 
(IN). Clean and regrade section above junction with 53-Q. (IN). 
(2) Ditch 53-A. Pave invert and/or install 
one-half round invert tile from junction with 53 to 20" culvert 
at junction with 53-a-8. (IN). Pave side slopes from junction 
with 53 to junction with 53-A-6. (LRD). 
(3) Ditches 53-4-1t 53-A-2. 33-A-3. 53-A-A. 
53- and 53-A-6. Install one-half round invert tile and in- 
clude the indicated tributaries to these ditches. (IN). 
(4.) Ditch 53-A-7. Install one-half round 
invert tile from junction with 53-a to next culvert under high- 
way. Eliminate the swampy area around junctioh of 53-A-7 with 
53-a by the use of one-half round invert tile, sub-surface 
drains and fill. (IN). 
83 (5) Ditch 53-B. Clean and repair side 
walls from junction with 53 to culvert under railroad just 
above junction with 53-B-A. (IN)• Pave side slopes of this 
same section. (LRD). See subsequent report for recommenda- 
tions for remainder of this ditch. 
(6) Ditches 53-B-l. 53-B-2 and 53-B-3. 
Install one-half round invert tile. Include the several tribu- 
taries to ditch 53-B-3. (IN). 
(7) Ditches 53-C. 53-D and 53-E. Install 
one-half round invert tile, Include the several tributaries to 
ditch 53-E. (Hi). 
(8) Ditch 53-F. Complete installation of 
one-half round invert tile in this ditch. (IN). 
(9) Ditch 53-F-l. Install one-half round 
invert tile, changing location as required to remove it from 
under the building being constructed over it. (IN), 
(10) Ditch 53-F-l-A and 53-F-l-B. Install 
one-half round invert tile. (IN) 
(11) Ditch 53-G. Install one-half round 
invert tile from junction with 53 to junction with 53-G-l. (IN). 
(12) Ditch 53-H. Pave side slopes from 
junction with 53 to section where side slopes are now paved. (LRD), 
(13) Ditch 33-H-l. Abandon and fill from 
junction with 53-H to outlet of 12n culvert just below junction 
with 53-H-l-A, diverting ditch above the outlet of the 12" 
Culvert direct to ditch 53-H. Complete unpaved sections and 
reset 12” culvert just below junction with 53-H-l-C. (IN). 
(14) Ditches 53-H-l-A. 53-H-l-B and 53-H-l-C. 
Install one-half round invert tile including the indicated tribu- 
taries. (IN), 
(15) Ditch 53-H-2. Install one-half round 
invert tile from junction with 53-H to 20 feet above junction with 
53-H-2-A. (IN). 
(16) Ditches 53-J« 53-J-l. 53-K and 53-L. 
Install one-half round invert tile. (IN).- 
(17) Ditch 53- ** . Complete to junction with 
33. (IN). 
(IB) Ditches 53-N and 53-N-l. Install one-half 
round invert tile„ (IN). 
** Illegible. 
84 (19) Ditch 53-Q. Clean and regrade, section 
from intersection with 53 to inlet of next 15” culvert. Install 
one-half round invert tile above the 15" culvert. (IN). 
(20) Ditches 53-Q-l and 53-Q-l-A. Install 
one-half* round invert tile. (IN), 
(21) Ditch 53 -R. Regrade upper section and 
install sub-surface drain in seepage area at end. (IN), 
h. Miscellaneous items in area tributary to 
Drainage System No. 53. 
(1) Regrade the triangular area between ditch- 
es 53-F and that section of 53 between junction with 53-F and 53-M 
(IN). 
(2) Fill and grade the area around the upper 
end of 53-N to drain into this ditch. (IN). 
(3) Fill extensive and deep ruts along the 
road leading from junction of 53-F with 53-F-l in the direction 
of 53-A-2. (IN). 
(4-) Reconstruct wooden bridges across ditches 
53 and 53-C, each located about 150 feet upstream from junction of 
53- with 53 so that they are not definite obstructions to flow. 
(IN)« 
(5) Fill large hole caused by uprooted tree 
located near junction of 53-B and 53-B-l. (IN). 
(6) Remove dike caused by cable crossing 
ditch 53-F at a point about **5 feet above its junction with 
ditch 53. (IN). 
k. Drainage system No. 54.. 
(1) Ditch 54. Deepen and improve downstream 
from junction with 54--A until definite flow is maintained. (IN). 
Pave invert and side slopes from elevation 6.0 to junction with 
54- (LRD). Install one-half round invert tile in remainder of 
ditch, (IN), Reset and enlarge as required and recondition 
the area around the 3 - 12" culverts and the sanitary sewer cross- 
ing located about 200 feet below junction with 54--B. (IN). Pave 
side slopes from junction with 54--A to the ** - 24" culverts 
located 100 feet above junction with 5A-D. (LRD). 
(2) Ditches 54.-A and 54-A-2. Install one- 
half round invert tile with fill and sub-surface drains as re- 
quired to completely dry up the extensive seepage areas at ends 
of 54-A and 54.-A-2. (IN). 
** Figures illegible 
85 (3) Ditch 54-A-l. Cut channel from 54-A 
to lower end of 54-A-l and install one-half round invert tile. 
(LRD). Complete installation of one-half round invert tile in 
section between junction with 54-A-l-A and 54-A-l-C. (IN), 
(4) Ditch 54-B. Complete installation of 
one-half round invert tile. (IN)0 
(5) Ditches 54-C and 54-D. Fill and/or 
install one-half round invert tile. (IK). 
(6) Ditches 54-E and 54-E-l. Install one- 
half round invert tile. (IN). 
l. Miscellaneous items in area tributary to 
drainage system No. 54. 
(1) Regrade area located about 300 feet 
north of end of ditch 54-1-A. (IK). 
(2) Fill numerous ruts located about 300 
feet west of the end of ditch 54-A. (IK). 
(3) Fill numerous ruts located near end of 
ditch 54-A-2. (IK). 
(4) Install sub-surface drains along foot 
of slope paralleling ditch 54-E and about 50 feet north of it. 
Connect it into ditch 54. (IK). 
(5) Complete unpaved section of roof drain- 
age system for power station located about 200 feet northwest of 
Post Theater. (IK). 
m, Drainage System No. 55. 
(1) Ditch 55. Regrade and improve section 
below junction with 55-A, Avoid the destruction of shade. (IK). 
Pave invert and side slopes from elevation 6.0 to junction with 
55-A. (LHD). Pave invert and side slopes from junction with 
55-A to junction with 55-D. (IK). 
(2) Ditches 55-a and 55-A-l. Install one- 
half round invert tile in sections now unpaved, (IK). 
(3) Ditch 55-B, Install one-half round 
invert tile and sub-surface drain to seepage area at end. (IN). 
(4) Ditch 55-C. Pave invert and side 
slopes and/or install concrete storm sewer. (IK). 
t (5) Ditch 55-C-l. Pave invert and side 
slopes and/or install concrete strcm sewer, connecting it to 
ditch 55-C. (IK). 
86 (6) Ditch 55-D. Install one-half round 
invert tile in section now unpaved0 (IN). 
(7) Install one-half round invert tile along 
south side of barracks and along toe of slope near this barracks 
as indicated in red on Drawing M.G. 10. (IN). 
n. Drainage System No. 56. 
(1) Ditch 56. Install one-half round invert 
tile from elevation 6.0 to end of ditch with sub-surface drain 
into seepage area about 250 feet from end. (IN). 
£. Drainage System No. 57. 
(1) Ditch 57. Pave invert and side slopes 
from a point about 500 feet below junction with 57-D to junction 
with 57-F, Install one-half round invert tile from junction with 
57-F to end. (IN). 
(2) Ditches 57°A. 57-B and 57-C. Combine 
into one system. Cut new ditch to ditch 57 and install one- 
half round invert tile in the entire system. (IN). 
(3) Ditch 57-A-l. Install one-half round 
invert tile and sub-surface drain to eliminate seepage area at 
end. (IN). 
(4) Ditch 57-D. Install one-half round 
invert tile from junction with 57 to the 2011 culvert located 
about 200 feet above junction with 57-D-5• (IN). 
(5) 
and 57-D-5. Install one-half round invert tile. (IN) 
(6) Ditches 57-E. 57-F and 57-G. Install one- 
half round invert tile. (IN). 
(7) Fill extensive ruts located on east side 
of warehouse about 300 feet northeast of end of ditch 57-A. (IN), 
(S) Regrade area located between Field Com- 
missary Building and ditch 57-D. (IN). 
(9) Eliminate the extensive swampy area locat- 
ed in the V between ditches 57 and 57-E by the use of fill and 
one-half round invert tile ditches. (IN). 
(10) Eliminate large hole and seepage area 
located about 200 feet north of end of ditch 57-G by the use of 
fill and a sub-surface drain connected to the existing sanitary 
sewer located about 30 feet west of the seepage area. (IN). 
(11) Eliminate water pooling around car wash 
rack located near end of ditch 57-B. 
87 £• Drainage system No0 58, 
(1) Ditch 58. Straighten, deepen and cut 
new channel as required downstream from the 2-8* x 8* culverts 
under Howard ave. until a definite channel flow is maintained from 
Howard Ave, to the Farfan River, At the present, this ditch 
spreads into a swamp beginning about 250 feet east of Howard Ave. 
(IN). Improve the flow characteristics of ditch 58 from Howard 
Ave. to a point 800 feet above junction with 58-J by simple re- 
grading and removing obstructions to flow, taking particular 
care to avoid the destruction of shade. (IN). Pave invert and 
side slopes from elevation 6.0 to the point 800 feet above junction 
with 58-J. (LRD). 
(2) Ditches 58-A and 58-B, Install one-half 
round invert tile. (IN). 
(3) Ditch 58rG, Install one-half round 
invert tile from junction with **B to the point where the exist- 
ing paving begins. (IN). 
(4) Ditch 58-D. Pave invert and side slopes 
from junction with 58 to the 24" culvert about 700 feet above 
junction with 58-D-3. (IN), Install one-half round invert tile 
for 60 feet above the 24” culvert. (IN). 
(3) Ditches 58-D-l and 58-D-2. Install one- 
half round invert tile. (IN). 
(6) Ditches 58-£tt 58-F and 58-F-l. Install 
one-half round invert tile. (IN), 
(7) Ditch 58-G. Install one-half round 
invert tile. (IN)« 
(8) Ditches 58-H and 58-H-l. Install one- 
half round invert tile. (IN). 
(9) Ditch 58-J. Install one-half round 
invert tile from junction with **8 to 100 feet above junction 
with 58-J-3o (IN). 
(10) Ditches 58-J-I. 5B-J-2. 58-J-2-A and 
58-J-3. Install one-half round invert tile. (IN). 
(11) Fill low area located about 200 feet 
southwest of end of ditch 58-** (IN). 
(12) Fill and/or drain swamps located on both 
sides of Howard Ave. about 200 feet south of point where ditch 
58 crosses this Avenue. (IN). 
(13) Provide an outlet for and install one- 
half round invert tile in ditch located along west side of 
Howard Ave. in the District Engineer storage yard, (IN), 
** Figures illegible 
88 r, Drainage system No0 59. 
(1) Ditch 59, Improve flow characteristics 
of ditch from junction with 59-A to culvert 300 feet above junction 
with 59-* by simple regrading and removing obstructions to Alow, 
avoid the destruction of shade, (IN). Regrade around culverts 
under road to Naval Reservation just below junction of 59-H with 
59. (IN). Drain and/or fill the secondary channel just below 
junction of 59 and 59-L. (IN). Pave invert and side slopes 
from elevation 6,0 to culvert 300 feet above junction with 59-P. 
(LED). 
(2) Ditch 59-A. Improve flow characteristics 
of ditch from junction with 59 to junctioh with 59-A-10 by simple 
regrading and removing obstructions to flow, avoiding the destruc- 
tion of shade. (IN). Pave invert and side slopes of same section. 
(LED). 
(3) Ditch 59-A-l. Install one-half round 
invert tile. (IN). 
(4) Ditches 59-A-2 and 59-A-2-A. Install one- 
half round invert tile. (IN), 
(5) Ditch 59-A-3. Install one-half round 
invert tile for 200 feet above junction with 59-A, Install cul- 
vert under road located about 150 feet above junction with 59-A 
and regrade remainder of ditch. (IN). 
(6) Ditches 59-A-4 and 59-A-4-A. Install 
one-half round invert tile. (IN). 
(7) Ditch 59-A-5. Regrade lower end, (IN), 
(8) Ditch Install one-half round 
invert tile. Include the indicated tiibutaries. (IN). 
(9) Ditches 59-A-8. 59-A-9 and 59-A-10. 
Install one-half round invert tile. (IN). 
(10) Install inlet box and storm sewer for 
street intersection located**30 feet northwest of junction of 
59-A with 59-a-3. (IN), 
(11) Eliminate by the use of fill and one- 
half round invert tile ditches the extensive swampy area locat- 
ed west of the junction of 59-a-6 and 59-A-6-F. (IN) 
(12) Drain abandoned gun positions located 
along dAdib side of ditch 59-A-8, (IN). 
** Figures illegible 
89 (13) Eliminate pooling of water along pipe 
line extending generally from the 24" culvert in ditch 59-A-9 
to the 24" culvert in ditch 59-A-6 just below Junction with 
59-**-6-F. Simple regrading will suffice. (IN), 
(14) Ditches 59-B. 59-C. 59-D and 59-E. 
Install one-half round invert tile. (IN). 
(15) Ditches 59-F. 59-F-l. 59-F-l-A and 
59-F-2. Install one-half round invert tile. Eliminate exten- 
sive swampy areas at ends of each of these ditches by the use of 
fill and one-half round invert tile ditches. (NFD), 
(16) Pitches 59-1. 59-J. 59-K. 59-M. 59-N 
and 59-P. Regrade these ditches. (IN). 
(17) Ditch 59-L. Install one-half round in- 
vert tile from junction with 59 to 400 feet above junction with 
59-L-l. (NFD). 
(18) Ditch 59-L-l. Regrade. (NFD). 
s. Miscellaneous improvements. 
(1) Locate definitely the elevation 9.0 
contour in the valleys of ditches 50, 51, 53, 54, 55, 56, 57, 
58 and 59 by an engineering survey. Eliminate all swamps adja- 
cent to and above this contour by the use of fill and/or one- 
half round invert tile ditches. (LRD). 
(2) Complete landscaping and grading 
throughout the area covered by this report with particular 
emphasis on the filling of ruts, low areas and deppessions not 
specifically pointed out in preceding paragraphs. (IN). 
(3) Clean all one-half round invert tile 
roof drains and regrade any found to retain water in excess of 
one-half inch, (IN), 
90 L Er G E: N O 
‘SCAt-C: App/~ot.. /:Z4CO APP*0* 
jf HOC//VO //vu£pr T/te D/TCH 
fC/tl. COA/C/=i£: T£ o/rcsi 
D/f?T JO/rcM 
C(/L WS F?T 
WAR. DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
HO WAR D DEILD, C.Z.. 
NOTE: Notations in circles thus (prefer to subdivisions 
oi section 9 of accompanying report. 
Office. Of THE. DEPT. SURgCON 
&£TC OAiAjf: A/a £ q 
cXpt. sha/. COHOS 
Col, a?ccx cq*hs 
AUGUST / 993 
APPROVED 
ASsr. cHitrrSrAFF 6-9 
oes*ory' D£A=r. coajaianou a? 
oA'WiS A/O. A4-C--/0 NOTE• Notations in circles thus ($fre fer to subdivisions 
Of section 9 of accompanying report 
LEGEND 
2 nOl/A/D //VKiVRT T/LC O/TC/i 
FULL COn/C£f£ T£T O/TCFf 
O/rt T atTCf-t 
CC/L \S£Pf T 
SCALE: /'-BOO' APPRO*. 
war department 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
HOWARD FIELD, C.Z. 
orr/ce or thu o£pt ■soroeo* 
r>£COWAi£/vDe o . 
OVfD^i%A 
col neb, corps' 
3£T /=> T /9*3 
APPROVED 
4ssr ewer staff <?-■*. 
ocr-ury de&t commandsH 
0'/=iW G /V-? ■ M. Cr // l_ E~ G E M D 
? HOU/VD INVSIAT T/CF DITCH 
TUL L COAICH F TET DITCH 
D/HT D/TCH 
CULVETPT 
SCA\L£- /"- 200' APPROX 
WAR department 
PANAMA CANAL DEPARTMENT 
NOTE’ Notations in circles thus (prefer to subdivisions 
of section 9 of accompanying report 
drainage: survey 
MALARIA CONTROL 
HOWARD FIELD, C.Z. 
arr/c£ of rue ocpr sopqFov 
cWr>T. sArt. conns ’ 
apppovfo# , _ J- 
col. rtcp/coAPs' _ 
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approved 
sISSZ CW£F STAYF C3-+ 
ODF’UTY COSU/vfA tVDDF? 
D'PfW'S /V-9 A/, C.-/3 NOTE■ Notations in circles thus© refer to subdivisions 
o'f section 3 of accompanying report 
L '& G & N D 
Z FfOU/VD //VYCFTT T/l £ DITCH 
TOLL COA/CFfT T£ O/TCH 
CHFfT DITCH 
CL/L V'£~ FTT 
3CXKLSS: /"= ZOO' APPROX.. 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage survey 
MALARIA CONTROL 
HOWARD FIELD, C. Z. 
OFF ICC or THE DEPT SUFGCOH 
TtC COMIMCIJ DCD “ 
C/fpT. SAM- COUPS 
col. MiT>. corps r 
S£PT /S43 
APPROVED 
ASST CHIEF STAFF _ 
0£F>L/ry 0£F=T COAiMAA/O ££* 
OMVS A/£ MC-/Z MALARIA CONTROL - DRAINaGE SURVEY 
panama canal department 
2 NOVEMBER 1943. 
91 10. SPECIFIC REPORT ON QUARRY HEIGHTS (AREA NO. 7). 
a. Area included - Quarry Heights and vicinity 
as indicated by accompanying Map M.C. 14-. 
b. Drainage system Mo. 60. 
(1) Ditch 60. Reshape bottom of inlet box 
near sentry house to eliminate trapped water. (IN), 
V / ' . • ■_ . , ' - . . 
(it Ditches 60-a and ffi-B. Install one- 
half round invert tile. (IN). 
c. Drainage system No. 61. 
(1) Ditch 61. Eliminate extensive seepage 
area just above junction with 61-A by the use of sub-surface 
drainso (IN). Install one-half round invert tile in the section 
now unpaved above junction with 61-B. (IN). 
d. Drainage system Noc 62. 
(1) Ditch 62. Repair side walls to eliminate 
seepage pockets. (IK). 
(2) Ditch 62-A. Install one-half round 
invert tile. (IN). 
e. Drainage system No. 63. 
(1) Ditch 63. Repair broken section about 
60 feet upstream from inlet to 15n culvert. (IK). Eliminate 
seepage pockets in ditch slopes for 60 feet upstream from inlet 
to 15” culvert by the use of concrete side walls or sub-surface 
drains. (IN)0 
f. Miscellaneous improvements0 
(1) Pave inlet and outlets of the several 
culverts under the road leading from Quarry Heights to the radio 
station ondipp of Ancon Hill. (IN). 
'(2) Install sub-surface drain in ground 
water outcrop in bank below carrier pigeon lofts. Connect into 
storm sewer. (IN). 
(3) Repair roof drainage system in front of 
Bldg. 327 to eliminate the complete stoppage of this drain. (IN). 
(A) Fill ruts and large holes along and at 
extreme end of road leading from the main Ancon Hill access road 
to an abandoned feun position. (IN). 
(3) Eliminate water standing in a small con- 
crete box in the ground at the south end of the parade grounds. 
(IN). 
93 (6) Reshape bottom of inlet box in drain 
located on east side of road in front of Military Police Barracks. 
(IN). 
(7) Pave outlet for culvert near 516th Signal 
Aircraft Warning Barracks. Regrade ditch below this culvert. (IN). 
(3) Provide one-half round invert tile roof 
drain systems for principal houses and buildings not now so equipped 
and regrade around these houses and buildings to eliminate holes 
and depressions that impound water. (IN), 
(9) Repair leaky water hydrant in yard about 
50 feet southwest of Post Restaurant No. 2. (IN). 
94 LEGEND 
/pouod //weerr r/L£ oyra/-/ 
TOCS COOC/=f£ T/F £>/TCrt 
jo/ypT otrcf/ 
coc oc/p r 
NOTE- Notations in circles thus prefer fo subdivisions 
of section to of accompany in <3 report 
S O8 Af>f>roX. / ‘ /O OO 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
QUARRY HEIGHTS, C. Z. 
xWCO/V f-//LL SUMM/T 
■SCALE; *rrr** I-IOOO 
ernes or thg p£/*r so* as on 
'■"—"I 
APPROVEDP (ffQj/ 
COL., t£p. Coif PS ~ 
SSf-r. U/S>4-S 
APPROVED 
asst, chief staff & 4 _ _ _ . 
P&PUrY OEF>T. COMMANDER 
D'RV/t? V» A#.C~/4 Recommended George W. Hamilton 
Captain, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Crops 
APPROVED! 
Assistant Chief of Staff, G-4- 
Deputy Department Commander 
95 MALARIA control - DRAINAGE survey 
PANaMA CaNaL department 
2 NOVEMBER 1943 
97 11. SPECIFIC REPORT ON FORT AMaDQR ( AREA MO. $)) 
a. Area included - Fort Amador and vicinity as 
indicated by accompanying Map M.C. 1$. 
b. Drainage system No. 64. 
(1) Ditch 64. Stabilize side slopes for 400 
feet upstream from entrance to 21n culvert by the use of sod or 
concrete. (IK). Pave side slopes at point where sanitary sewer 
crosses ditch about 500 feet upstream from 21M culvert. (IK). 
c. Drainage system Ko. 65. 
(1) Ditch 65. Clean culvert and reshape 
inlet to avoid trapping of water, (IN). 
d. Drainage system No. 66. 
(1) Ditch 660 Clean thoroughly and install 
one-half round invert tile in upper section. (IK). 
e. Drainage system Ko. 67. 
(1) Ditch 67-A, Install one-half round invert 
tile in upper section. (IN). 
f. Miscellaneous improvements. 
(1) Regrade road ditches between railroad and 
highway along the northern end of the causeway to Flamenco Island, 
in front of the bowling alley and opposite the tent area. Install 
new culverts under railroad to eliminate the extensive pooling of 
water in these ditches. (IK), 
(2) Fill extensive and deep ruts in area 
south of bowling alley including the newly filled area extending 
into the Bay of Panama. 
, (3) Fill, regrade and install one-half round 
invert tile drain to completely dry up the area north of the bowl- 
ing alley. (IK)C 
(4) Fill ruts and holes in road along water 
front about 500 feet north of bowling alley. (IN). 
(5) Fill and/or drain area about 400 feet 
east of Post Theater. (IN). 
(6) Fill ruts in area about 200 feet west 
of Post Theater. (IN). 
(7) Regrade area about 50 feet east of hangar. 
UN). 
99 (8) Fill ruts and regrade area on each side 
of ditch 64. below junction with 64.-B, (IN), 
(9) Fill ruts in rear of noncommissioned 
officers* quarters, (IN), 
(10) Fill ruts in front of and between bar- 
racks in southwestern quadrant of post. (IN), 
(11) Eliminate water standing in sand traps 
and other low areas and depressions throughtout the entire golf 
course. (IN). 
(12) Regrade area about 150 feet south of Ord- 
nance Machine Shop. (IN). 
100 B AY OF" PANAMA 
LEGEND 
■£ /A/VSFtr T/L£ P/TC/i 
. E(/tL COa/CPE 7£T D/T CH 
D/P T D/TCrt 
CULVSPT 
NOTE: Not# Ho ns fr> circles thus @refer to subdivisions 
of section // of Qccompjnying report 
•SC/AES1 '■ A/yorox. /2-400 
WAR DEPARTMENT 
PANAMA CANAL. DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL. 
rORT AMADOR, C.Z. 
OF HOE OF THE D£F>T 5(JRGEO/ t 
RE“MM,NOfWw^U2H 
« CAPr., tA*J. comps 
SEPT. /J>*3 
APPROVED 
ST CHIEF STAFF &-A- 
DEPUTY DEPT. COMMANDER 
O'R'VJ'G A/-* Af.C-/S Recommended George W. Hamilton 
Captain, Sanitary Corps 
Approved & Wesley C. Cox 
Colonel Medical Crops 
APPROVED: 
Assistant Chief of Staff, G-4 
Deputy Department Commander 
101 MALARIA CONTROL ~ DRaINaGE SURVEY 
PANAMA CANAL DEPARTMENT 
22 DECEMBER 1943. 
103 12• SPECIFIC REPORT ON CAMP PARaISO ( aREA NUMBER MINE). 
a. Area Included: Camp Paraiso and vicinity as 
indicated on accompanying Map M.C. 16. 
b• Drainage system No. 68. 
(1) Ditch 68. Install one-half round invert 
tile from outlet of culvert near canal bank to canal. Install 50 
feet of one-half round invert tile in upper section of ditch 68. 
(Panama Canal property). (IN). 
(2) Ditch 68-B. Repair broken sections. 
(Panama Canal property). (IN) 
(3) Ditch 68-C. Install one-half round in- 
vert tile, (Panama Canal property). (IN). 
c. Drainage system No. 69. 
(1) Ditch 69. Clean 30" culvert under rail- 
road and Gaillard Highway. Pave invert and side slopes from junc- 
tion with 69-B to junction with 69~D, if this section is not 
already paved. (Due to a partial stoppage in the 30" culvert, 
this last mentioned section of ditch is totally submerged and 
its classification could not be determined). In any event, after 
unstopping the culvert, completely sanitate the area now covered 
with water until the whole area is definitely drained with drain- 
age courses paved. Install one-half round invert tile in section 
now unpaved, just above junction with 69-Q. (All of above Panama 
Canal property). (IN). 
(2) Ditch 69”B0 Install one-half round in- 
vert tile from junction with 69 to a point about 200 feet upstream 
from the latter junction where there is definite ground water out- 
crop. (Panama Canal property). (In). 
(3) Ditch 69-D. Install one-half round in- 
vert tile for 150 feet above junction with 69. (Panama Canal 
property). (IN). 
(4) Ditch 69-D-l. Install one-half round 
invert tile for 100 feet above junction with 69-D. (Panama Canal 
property). (IN). 
(3) Ditch 69"G. Install one-half round in- 
vert tile for 50 feet above 24." culvert under Panama Railroad. 
Regrade area adjacent to this 50 foot section where a pipe line 
crossing has been made. (Panama Canal property), (IN). 
(6) Ditch 69-H. Repair and recondition from 
junction with 69-H-2 to end. Eliminate seepage areas on east side 
of ditch about 200 feet above junction with 69-H-2 by the use of 
sub-surface drains emptying into ditch 69-H. (Panama Canal 
property). (IN). 
105 (7) Ditch 69-H-2. Install one-half round 
invert tile for 100 feet above junction with 69-H. (Panama 
Canal property). (IN). 
'(8) Ditch 69-J. Replace eroded section be- 
tween junction with 69-J-l and 69-J-3 with one-half round invert 
tile, (NFD). Repair invert of ditch for section downstream from 
junction with 69-J-4. (IN), 
(9) Ditch 69-K. Repair broken sections, 
remove large rocks from, and repair side walls in section from 
junction with 69 to junction with 69-K-7. Install one-half round 
invert tile or subsurface drain packed in rocks from junction with 
69- to 30 feet above junction with 69-K-9, (Panama Canal 
property). (IN). 
(10) Ditch 69-K-2. Install one-half round 
invert tile with subsurface drains into seepage area at upper end. 
(Panaman Canal Property)0 (IN). 
(11) Ditch 69-K-3. Regrade. (Panama Canal 
property). (IN). 
(12) Ditch 69-K-4. Install one-half round 
invert tile. (Panama Canal property), (LRD). 
(13) Ditch 69-K-6-A. Straighten and install 
one-half round invert tile from 30H culvert under the Panama Rail- 
road to the beginning of the existing paved ditch paralleling the 
Railroad. (Panama Canal property). (NFD). 
(14) Ditch 69~K-9. Install one-half round 
invert tile or subsurface drain packed in rocks for 30 feet above 
junction with 69~K. (Panama Canal property), (IN). 
(1$) Ditches 69-M-l and 69-M-2. Install sub- 
surface drains in these ditches, (IN). 
(16) Ditch 69-N. Complete installation of 
one-half round invert tile in lower section and recondition upper 
section to eliminate trapped water. (IN), 
(17) Ditch 69-N-l. Install one-half round 
invert tile. (LRD). 
(18) Ditch 69-P. Install subsurface drain 
at upper end to eliminate seepage area. (Panama Canal property). 
(IN). 
d. Drainage system No. 70. Ditches 70, 70-B and 
70- Clean and recondition these ditches, regrading if re- 
quired to eliminate pooling of water. (Panama Canal property), 
(IN). 
106 e. Miscellaneous items in area tributary to 
drainage systems 68 to 72 inclusive, 
(1) Regrade area located about 100 feet 
north of junction of ditches 68-C and 68. (Panama Canal prop- 
erty). (IN). 
(2) Fill, regrade and construct one-half 
round invert tile ditches as required to completely eliminate the 
extensive pooling of water in the area bounded by the Gaillard 
Highway, Camp Paraiso access road, ditch 69-J and end of 69-A-l. 
Install one-half round invert tile in all existing ditches in 
this area which are not eliminated by the new grading plan. 
(Panama Canal property). (IN). 
(3) Regrade area located about 100 feet east 
of junction of ditches 69-G and 69» (Panama Canal property). (IN), 
(4) Regrade area located about 300 feet south- 
west of junction of ditches 69-J and 69-J-3. (Panama Canal prop- 
erty). (IN). 
(5) Eliminate seepage area located about 100 
feet east of junction of ditches 69~D and 69 by the use of sub- 
surface drains and fill, (Panama Canal property). (IN). 
(6) Regrade along road crossing ditch 69-K 
downstream from the junction of this ditch with 69-K-7. (Panama 
Canal property). (IN), 
f. Drainage system No. 73. Ditch 73. Regrade, 
including the indicated tributary, (IN), 
g. Drainage System No. 1L, 
(1) Ditch 7A. Install one-half round invert 
tile for approximately 200 feet at the upper end, (Panama Canal 
property). (IN). 
(2) Ditch 7A"B, Pave invert and side slopes. 
(IN). 
(3) Ditches 74-C« 7A-D-1 and 7A-D-2. Regrade 
if cleaning does not eliminate water standing in these ditches. (IN). 
(A) Ditch ?4°-£. Recondition throughout. 
Install subsurface drains in seepage areas adjacent to this ditch. 
Fill ruts and low areas adjacent to ditch. (IN), 
(3) Ditch 7A-E-1. Install one-half round 
invert tile and regrade on each side of ditch. (IN), 
(6) Ditch 7A-F, Install 4-00 feet of one-half 
round invert tile in upper section, (LRD), 
107 (7) Ditch 74-G. Recondition invert at pdiint 
just above junction with 74--G-4. (IN). 
(8) Ditch 74.-G-1. Install one-half round 
invert tile. (IN). 
(9) Ditch 74-H, Recondition. (IN). 
(10) Ditch 7A~J • Recondition section just 
below junction witfc 74-J-l, (IN)0 
(11) Ditch 74-J-l. Install approximately 
60 feet of one-half round invert tile in unpaved section of ditch 
just above junction with 74»J. (IN). 
(12) Ditch 74.-J-1-A. Install subsurface 
drain with additional branches as required to eliminate seepage 
areas adjacent to this ditch. (IN), 
(13) Ditch 7A-K. Clean and recondition 
lower end. (IN). 
(H) Ditch 7A-M. Install approximately 250 
feet of one-half round invert tile in upper section. (IN), 
(15) Ditch 7A-M-1. Install approximately 
100 feet of one-half round invert tile in upper section, with 
regrading and subsurface drains to eliminate pooling of water. 
(IN). 
(16) Ditch 7A-N. Install approximately 4-0 
feet of one-half round invert tile in upper section, (IN). 
(17) Ditch 7A-P. Pave inlet to 2An culvert 
under Gaillard Highway. Regrade ditch for about 150 feet above 
this point. (Panama Canal property). (IN). 
(18) Ditch 7A-P-1. Install 100 feet of one- 
half round invert tile above 18” culvert under camp access road, 
(IN). 
(19) Ditch 74.-U. Install one-half round 
invert tile from junction with 7A to 50 feet above junction with 
7A-Q-1. (IN). 
(20) Ditch 74.-Q-1. Install one-half round 
invert tile for 50 feet above junction with 74-Q. (IN). 
(21) Ditches 7A-R. 7A-R-1 and 7AS. Install 
one-half round invert tile. (IN), 
(22) Ditch 74.-T. Repair invert and pockets in 
side slopes. (IN). (23) Ditch 74-V. Install one-half round 
invert tile in unpaved section just above junction with 74. (IN). 
(24) Ditch 74-V-l. Install one-half round 
invert tile. (IN). 
(25) Ditch 74-W. Install one-half round invert 
tile from inlet to 24” culvert under Gaillard Highway to end of 
system. (Panama Canal property#). (IN). 
h. Drainage system No. 73. Ditch 75. Clean 
and regrade, (IN), 
k. Drainage system No. 76. 
(1) Ditch 76. Install one-half round invert 
tile or subsurface drain packed in rock from canal to the 20M 
culvert under street. ' (IN). 
(2) Ditch 76-A. Install one-half round 
invert tile or subsurface drain packed in rock from junction 
with 76 to where existing paved section begins. (IN). 
m. Drainage system No. 77. Ditch 77. Install 
one-half round invert tile for 100 feet from Canal. (IN), 
n, Drainage system No. 78. Ditch 78. Replace 
section for about 60 feet from Canal with subsurface drain packed 
in rock. (IN), Replace approximately 200 feet of paved section 
of ditch at point where paved section joins subsurface drain system. 
(IN). Install approximately 200 feet of one-half round invert tile 
below outlet of 6n subsurface drain, (IN). 
jd. Drainage system No. 79. 
(1) Ditch 79. See subsequent report for 
recommendations for this ditch for section downstream from point 
50 feet below 24n culvert under Gaillard Highway, Install one-half 
round invert tile for 50 feet on each end of this cultert. (Panama 
Canal property). (IN). 
(2) Ditch 79-Q. Install one-half round invert 
tile. (PanamanCSaal property). (iN). 
2* Miscellaneous items in area tributary to Drain- 
age Systems 73 to 79 inclusive. 
(1) Fill extensive and deep ruts and holes in 
areas south and east of Post Exchange building, (IN). 
(2) Fill extensive and deep ruts in area at 
end of ditch 69-j-4. (IN). 
(3) Fill ruts and regrade area in the V 
between ditches 74 and 74”E, (IN). 
109 (4) Install 50 feet of one-half round invert 
tile along west side of road at northeast corner of Post Headquart- 
ers building. (IN) 
.. >, * 
(5) Regrade around Post Headquarters building 
and the volley ball court about 100 feet west of this building. (IN). 
(6) Fill ruts and depressions in area between 
ditches 74-F and 74-H. Extensive breeding was found in these ruts 
on date of this survey, (IN). 
(7) Eliminate seepage areas on east side of 
ditch 74- between junctions of 74 with 74-M and 74--P. Use fill and 
additional subsurface drains to supplement those drains already 
constructed. (IN). 
(8) Regrade entire area in the V between 
ditches 74- and 74-M filling extensive ruts and holes. Install 
one-half round invert tile in the several main valleys of this area 
which together with proper regrading will convert this area into 
an adequately drained one. (NFD). 
(9) Install subsurface drain in seepage area 
near junction of 76-B and 76. (IN). 
(10) Clean end of 12" culvert located about 
300 feet.northwest of junction of 76 and 76-A. Install 50 feet 
of one-half round invert tile downstream from outlet of culvert, 
(IN). 
(11) Regrade ditch along side firing line at 
pistol range. (IN). 
(12) Install 20 feet of subsurface drain into 
seepage area in the V between ditches 78 and 78-B. (IN). 
■■ * 
(13) Install subsurface drains into seepage 
areas located respectively about 150 feet southwest and 100 feet 
northeast of junction of 74*J and 74-J-l. (IN). 
(14) Install subsurface drains to eliminate 
extensive ground water out-crops in the hill side west of the 
motor pool building. Drain the upper level into ditch 74-V-l and 
the lower level into ditches 74-V, 74-M-l-B and/or 74-J-l. (IN). 
(15) Fill and install one-half round invert 
tile and/or subsurface drains to eliminate extensive pooling of 
water in the V between ditches 74 and 74-G. (IN). 
110 LEGEND 
£ FFOUA/D /A/VEFPT T/c£ O/TCFF 
PULL CO/VOFrETE E3/TCH 
OF AFP O/TCFF 
CULVEAFT- 
NOTE- Notations m circles thus refer to subdivisions 
Of section 12. of accompanying report. 
SCALE: Approx. /: 2.4-00 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
PARA ISO , C. Z. 
OFFICE OF THE DEPT. SUPOEOA 
C-aWt-y fAH jZORPS 
Af>r> ROVE ft fT) [D n 
SEP’T. (J / 9*3 
/APPROVED 
Aimr- wi« staff a-A —- 
pepurr OSPT. COMMANOCR 
D'R'W'G AJ* AAC.-/G 
P Recommended George W. Hamilton 
Captain, Sanitary Qf>rps 
Approved Wesley C. Cox 
Colonel Medical Crops. 
APPROVED: 
Assistant Chief of Staff, G--4 
Deputy Department Commander 
111 mlaria control - drainage survey 
panama canal department- 
22 DECEMBER 1943. 
113 13. SPECIFIC REPORT ON OUTLYING AH&a IN VICINITY OF 
FORT CLAYTQM. ( aREa NUMBER TEN). 
a. Area Included. Area in vicinity of Fort 
Clayton as indicated on accompanying Map M.C, 17. 
b. Drainage system No. 41. Continued from 
report on Fort Clayton (7v). 
(1) Ditch 4.1. Install subsurface drain pack- 
ed in large rocks from junction with 4-1-G to the 24" culvert just 
below junction with 4-1-L. Install one-half round invert tile for 
$0 feet upstream from this culvert. (LRD). 
(2) Ditch 41-G. Install subsurface drain 
packed in large rocks from junction with 4-1 to the 24." culvert 
about 2$0 feet from end of system. Install one-half round invert 
tile from this 24." culvert to end of system, (LRD), 
(3) Ditch 4.1-H. Install one-half round invert 
tile. (IN). 
(4-) Ditches 41-G-l and 41-G-2. Install sub- 
surface drains packed in large rocks. (LRD), 
(3) Ditch 4.1-G-3. Clean and regrade. (LRD), 
(6) Ditches 4-1-G-5 and 41-G-7. Install sub- 
surface drains packed in large rocks in each of these ditches for 
30 feet above their junctions with 4-1-G, (LRD). 
(7) Ditches 41-J. 4.1-K and 41-K-l. Install' 
subsurface drains packed in large rocks in each of these ditches. 
Install subsurface drain into seepage area located on south side 
of ditch 41 just below junction of this ditch and 41-J. (LRD), 
c. Drainage system No. 42. Continued from report 
on Fort Clayton (7w). 
(1) Ditch 4-2. Install subsurface drain pack- 
ed in large rocks from junction with 4-2-L to 4-0 feet upstream 
from 4H sanitary sewer crossing this ditch. (IN). Unstop this 
sewer which is now overflowing into ditch 4-2. (IN), 
(2) Ditch 42PS. Install subsurface drain 
packed in large rocks from a point 100 feet above junction with 
4-2 to end of system. (IN). 
(3) Ditches 4.2-H-l and 4.2-H-3. Install sub- 
surface drains packed in large rocks in each of these ditches for 
20 feet above their junctions with 4-2-H. (IN). 
(4-) Ditch 42-H-2. Install subsurface drains 
packed in large rocks for 100 feet above junction with 4-2-H. (IN). 
115 (5) Ditch 4.2-L. Install subsurface drain 
packed in large rocks for 100 feet above junction with 4-2. (IN). 
(6) Ditches 4.2-M and 42-M-l. Install subsur- 
face drains packed in large rocks in these ditches. Include such 
additional subsurface drains as are necessary to eliminate extene 
sive seepage areas on each side of these ditches in upper reach- 
es. (IN). 
(7) Ditch 4.2-A-l. Install one-half round 
invert tile in unpaved section and clean upper section which is 
now paved but totally obstructed. (Panama Canal property). (IN). 
(8) Ditch 4.2-P. Recondition and replace as 
required the lower section of this ditch and subsurface drain 
from junction with 4-2 to junction with 42-P-l so as to eliminate 
the extensive swamps in the area near junction of 42-P and 4-2-P-l. 
Install one-half round invert tile for 4-0 feet above junction with 
42-P-3. (Panama Canal property). (IN), 
(9) Ditch 4.2-P-l. Recondition and replace 
with one-half round invert tile or subsurface drain. (Panama 
Canal property), (IN), 
(10) Ditch 4.2-P-2. Install one-half round in- 
vert tile for 150 feet above junction with 4-2-P-2-A, (Panama 
Canal property). (IN), 
(11) Ditch 4.2-P-2-A. Install one-half round 
invert tile for 2$ feet above junction with 42-P-2, (Panama 
Canal property), (IN). 
(12) Ditch 4.2-P-3. Install one-half round 
Invert tile for 40 feet above junction with 4-2-P, (Panama Canal 
property). (IN). 
(13) Regrade area on top of detention da® at 
west end to eliminate extensive pooling of water. (IN). 
d. Drainage system No. 80. 
• 
(lj) Ditch 80. Recondition invert and pave 
side slopes from Canal to the 36” culvert under the Panama Rail- 
road. (Panama Canal property), (LRD). Complete installation of 
one-half round invert tile from this 36n culvert to junction with 
80-F, (IN), Install subsurface drain packed in large rocks from 
junction with 80-F to 100 feet beyond the point where ditch 80 
becomes the south road ditch for the battery road, (IN), 
(2) Ditch 80-A. Clean thoroughly, (Panama 
Canal property), (NFD), 
116 (3) Ditch 8Q-G. Recondition side walls and 
install subsurface drains to eliminate extensive seepage areas 
on each side of this ditch. Install subsurface drains to elimi- 
nate seepage areas along 80 between functions with 80-B and 80~C, 
(Panama Canal property), (IN), 
(A) Ditch 80-D. F,econdition side walls. 
(Panama Canal property) (IN). 
(5) Ditch Install one-half round 
invert tile from junction with 80-D to junction with 89-D-2-A. 
(Panama Canal property), (IN). 
(6) Ditches 80-E. 80-F and 80-F-l, Install 
one-half round invert tile, (IN), 
(7) Ditch 80-G, Install one-half round in- 
vert tile for 60 feet above junction with 80, (IN). 
(8) Ditch 80-H. Install one-half round in- 
vert tile for 120 feet above junction with 80. (IN), 
(9) Ditch 80-J, Install one-half round in- 
vert tile for 150 feet above junction with 80. (IN), 
(10) Ditch 80-K. Install subsurface drain pack- 
ed in large rocks from junction with 80 to 1831 culvert at junction 
of 80-K and 80-K-2. Install one-half round invert tile for the 
next 100 feet above this 18” culvert and regrade remainder of 
ditch. (IN)o 
(11) Ditch 80-K-l. Install one-half round 
invert tile from junction with 80-K to 20 feet upstream from 18” 
culvert under highway. (IN), 
(12) Ditch 80-K-2, Install one-half round 
invert tile for 20 feet upstream from 18” culvert at junction 
of 80-K with 80-K-2. (IN), 
(13) Ditch 80-K-2-A, Install one-half round 
invert tile from junction with 80-K-2 to the indicated Au pipe. 
(IN), 
(14) Ditch 80-K-2-A-1. Install one-half round 
invert tile for 20 feet above junction with 80-K-2-A, (IN). 
(15) Ditch 80~K-2-A~2, Install one-half round 
invert tile for AO feet above junction with 80-K-2-A. (IN). 
(16) Ditch 80-M. Install subsurface drain 
packed in large rocks for 200 feet above junction with 80, (IN). 
(17) Ditch 80-N. Regrade for 20 feet above 
junction with 30. (IN), 
117 • e, Drainage system No, B1. 
(1) Ditch 81. Unstop 24" culvert at lower 
end. Install one-half round invert tile for 150feet upstream 
from this culvert, (Panama Canal property). (IN). 
(2) Ditch 81-A. Regrade, (Panama Canal 
property). (IN). 
(3) Ditch 81-B. Regrade. (Panama Canal 
property). (IN), Install one-half round invert tile. (LRD). 
f. Drainage system No, 82. 
(1) Ditch 82. Regrade section between 
junction with 82-D and culvert under Gaillard Highway. (Panama 
Canal property). (IN). 
(2) Ditch 82-A. Straighten and install one- 
half round invert tile from junction with 82 to junction with 
82-A-l, Regrade above this latter point. (Panama Canal property). 
(IN). Install one-half round invert tile above junction with 82-A-2. 
(LRD). 
(3) Ditch 82-A-l. Regrade. (Panama Canal 
property). (IN). 
(4) Ditch 82-B. Install one-half round in- 
vert tile for 150 feet upstream from 15" culvert under Ferry Road. 
(Panama Canal property), (IN), 
g. Drainage system No. 83. 
Ditch S3, Install one-half round invert tile 
from lake to end. (Panama Canal property). (IN). 
h. Drainage system No. 84. 
Ditch 84. Clean outlet of 20" culvert under 
Gaillard Highway. (Panama Canal property). (IN). 
k. Drainage system No, 85. 
(1) Ditch 85. Install subsurface drain pack- 
ed in large rock from lake to 20 feet upstream from junction with 
85-D. (LRD). 
(2) Ditches 85-A. 85-B.and 85-C. Install 
subsurface drain packed in large rock in each of these ditches. 
(LRD). 
(3) Ditch 85-D. Install subsurface drain 
packed in large rock for 20 feet upstream from junction with 85. 
(LRD). 
(LRD). 
118 m. Drainage system No. 86. 
Ditch 86. Install subsurface drain packed 
in large rock in this ditch, including the tributaries. (LRD). 
n, Drainage system No. 88. 
(1) Ditch 88. Install subsurface drain 
packed in large rock from lake to 21H culvert under battery road. 
(LRD). Regrade remainder of ditch, (IN), 
(2) Ditch 88-a. Install subsurface drain 
for $0 feet above junction with 38, (LRD). 
(3) Ditch 88-B. Install subsurface drain 
for 20 feet above junction with 88, (LRD), 
(4) Ditch 88-C. Install subsurface drain 
for 50 feet above junction with 88. (LRD), 
(3) Ditch 88-C-l. Install subsurface drain 
for 20 feet above junction with 88-C, (LRD). 
(6) Ditches 88-D and 88-E. Install subsur- 
face drain packed in large rocks. (LED). 
(7) Ditch 88-F. Install subsurface drain for 
20 feet above junction with 88, (LRD). 
(8) Ditches 88-G and 88-H. Install subsur- 
face drains in each of these ditches for 50 feet above their 
junctions with 88. (LRD). 
(9) Ditch 88-J. Install subsurface drain 
packed in large rock, (LRD). 
(10) Ditch 88-K. Install subsurface drain 
packed in large rocks from junction with 88 to 50 feet above junc- 
tion with 88HK-1. (LRD). 
(11) Ditches 88-L and 88-L-l. Install sub- 
surface drain packed in large rocks in each of these ditches, 
(LRD). 
(12) Regrade road ditch located about 700 feet 
west of end of ditch 41-0. (IN). 
£• Drainage system No. 89. 
(1) Ditch 89. Install one-half round invert 
tile. (LRD). 
(2) Drain swamp located on west side of ditch 
89 at its upper end, (IN), 
119 £. Drainage system No, 90. 
(1) Ditch 90. Install one-half round invert 
tile from lake to 20 feet above junction with 90-A. (LRD). 
(2) Ditch 90-A. Install one-half round invert 
tile for 20 feet above junction with 90, (LED). 
r. Drainage system No. 91. 
(1) Ditch 91. Install one-half round invert 
tile. (LRD). 
(2) Regrade trail leading from point near end 
of ditch 91 in direction of end of ditch 89. Fill ruts, holes and 
unbackfilled trenches0 (IN). 
s. Drainage system No. 92. 
Ditch 92. Install one-half round invert tile 
from lake to a point 350 feet upstream from uppermost 2An culvert 
indicated, (LRD), 
t. Drainage system Noc 93. 
(1) Ditch 93o Install one-half round invert 
tile from lake to 50 feet upstream from junction with 93-C. (LRD), 
(2) Ditches 93-A and 93-B. Install one-half 
round invert tile. (LRD). 
u. Drainage system No. 9A. 
(1) Ditch 9A. Install one-half round invert 
tile. (LRD). 
(2) Ditch 9A-A. Install one-half round invert 
tile for 20 feet above junction with 9A. (LRD), 
(3) Fill extensive ruts in shoulders of Chiva 
Chiva Road in vicinity of ditch 9A. (IK). 
y• Drainage system No. 95. 
Regrade upper section of ditch. (IN). 
120 L Ef G & N *D 
y rou/vo //vi/PRr t/jlc o/tcsv 
rot-L cone Re re o/rcrV 
OtRT DITCH 
COL VJTR~r- 
SCALE; /"r 200’ APPROX 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
OUTLYING ARLA-VICINITY OF FT CLAYTON 
NOTE■ Noiei/ons m circles thus &)refer io subdivisions 
of jecf'Qn S3 o-f recompensing report ___ 
%-s/cr or rue oe/rr st/ne/o* 
OtcommtMO t 
CmL. tfru ctWui 
/S/O V. /9-43 
/APPROVED 
AtST- CHItF tTAFF 0-4 
Of Fury Of FT cammArtOMU 
DRW'G Hf H1C-/7 Recommended George W. Hamilton 
Captain, Sanitary Corps. 
Approved Wesley C. Cox 
Colonel, Medical Corps.' 
APPROVED: 
Assistant Chief of Staff, G-A 
Deputy Department Commander malaria control - drainage survey 
panama canal department 
13 JANUARY I$U 
123 U. SPECIFIC REPORT ON FORT WILLIAM D. DAVIS. (AREA NO.11). 
a. Area Included. Fort William D. Davis and vicin- 
ity as indicated on accompanying Maps M.C. 18 and M.C. 19. 
b. Drainage System No. 96. 
(1) Ditch 96. Pave invert and side slopes from 
junction with 96-A to 71 x 15 * culvert just downstream from junction 
with 96-Q. Install one-half round invert tile from the 71 x 15* 
culvert to junction with 96-S, (LED. Part Panama Canal and part 
army). See subsequent report for system above junction with 96-S. 
(2) Ditch 96-A. See subsequent report for this 
ditch and its tributaries. 
(3) Ditch 96-B. Install one-half round invert 
tile. (Panama Canal property. NFD). 
(A) Ditch 96-C. Install one-half round invert 
from junction with 96 to 100 feet above junction with 96-C-l, (NFD). 
($) Ditch 96-C-l. Install one-half round 
invert tile. (NFD), 
(6) Ditch 96-D. Install one-half round invert 
tile from junction with 96 to a point 100 feet from end of system. 
(NFD). 
(7) Ditches 96-E and 96-F. Install one-half 
round invert tile in each of these ditches from their junctions 
with 96 to 200 feet upstream from these junctions. (NFD). 
(8) Ditch 96-G. Regrade for 20 feet above 
junction with 96. (NFD). 
(9) Ditch 96-H and indicated tributaries. 
Install one-half round invert tile. (NFD), 
(10) Ditch 96-J. Install one-half round invert 
tile from junction with 96 to 100 feet above 2V road culvert 
just above junction of 96-J with 96-J-l. Reset this 2Un culvert 
if required to obtain grade for outlet to ditch 96. Regrade all 
of 96-J system to eliminate local pools of water. All of above (IN), 
(11) Ditch 96-J-l. Install one-half round 
invert tile from junction with 96-J to the existing paved section 
in rear of motor pool, (IN), 
(12) Ditch 96-K. Install one-half round in- 
vert tile for $0 feet upstream from junction with 96. (IN). 
125 (13) Ditch 96”Lo Pave invert side slopes 
from junction with 96 to junction with 96-L-l. (NFD). Recon- 
dition section from junction with 96-L-l to junction with 
96-L-4. (IN), Install one-half round invert tile for 50 feet 
above junction with 96-L-4. (IN). 
(14) Ditch 96-L-3. Install one-half round 
invert tile from junction with 96-L to culvert outlet located 
about 300 feet from this junction, (IN), 
(15) Ditch 96-M. Install approximately 100 
feet of one-half round invert tile from junction with 96 to 
beginning of existing paved section. (IN), Repair side walls 
above this latter point, (IN). 
(16) Ditch 96-M-l. Install one-half round 
invert tile for 80 feet above junction with 96-M. (IN). 
(17) Ditch 96-N. Install one-half round in- 
vert tile, regrading area around end to drain into ditch. (NFD). 
(18) Ditch 96-Q. Recondition invert and pave 
side walls from junction with 96 to junction with 96-Q-5. (NFD). 
Install one-half round invert tile from this latter point to end 
of system. (LED). 
(19) Ditch 96-Q-l. Install one-half round 
invert tile, (NFD), 
(20) Ditches 96-Q-2 and 96-0-3. Install 
one-half round invert tile, (IN). 
(21) Ditch 96-Q-4. Repair side slopes from 
junction with 96-Q to end. (IN), 
(22) Ditch 96-Q-4-A. Install one-half round 
invert tile. (IN), 
(23) Ditch 96-Q-5. Install one-half round 
invert tile for 20 feet above junction with 96-Q, (IN). 
(24) Ditch 96-Q-6. Install one-half round 
invert tile for 200 feet upstream from junction with 96-Q, (LED). 
(25) Ditch 96-R, Install one-half round 
invert tile from junction with 96 to junction with 96-R-l. (LRD), 
See subsequent report for system above this point. 
c. Miscellaneous items in area tributary to 
Drainage System No, 96, 
(1) Fill low local depressions in area bounded 
by ditches 96, 96-L, 96-L-4 and 96-P. (IN), 
126 (2) Remove deteriorated and abandoned bridge 
from across ditch 96 at a point about $00 feet upstream from 
junction of this ditch with 96-Q. (IN). 
(3) Fill large depression located on east 
side of ditch 96-R about $00 feet upstream from junction of this 
ditch with 96. (LHD). 
d. Drainage System Noa 97. 
(1) Ditch 97. 
(a) Pave invert and side slopes from 
4-2* x 10' culvert under Boliver Highway to 78 x 9' culvert under 
the Panama Railroad just downstream from junction with 97-X. (LRD). 
(b) Straighten and pave invert and side 
slopes from last mentioned culvert under railroad to 88 x 
culvert under railroad about 2$0 feet upstream from junction with 
97-EB, (Panama Canal Property. NFD). 
(c) Straighten and pave invert and side 
slopes from last mentioned B1 x 1%' culvert to junction with 97-DD. 
(NFD). 
(d) Pave invert and side slopes from 
junction with 97-DD to 97-FF. (LRD)0 
(e) Install one-half round invert tile 
from junction with 97-FF to 97-JJ (LRD). See subsequent survey 
for system above this point. 
(2) Ditch 97-a. Install one-half round in- 
vert tile. (IN). 
(3) Ditch 97-B. Eliminate large erosion hole 
at junction with 97. Pave inlet and cutlet to 2 - 24-H culverts 
under Bolivar Highway. Install one-half round invert tile from 
these culverts to end of system. All of above, (IN). 
(4.) Ditch 97-B-l, Install one-half round 
invert tile for $0 feet above junction with 97-B, (IN). 
($) Ditch 97-B-2. Install one-half round 
invert tile, (IN). 
(6) Ditch 97-D. Install one-half round 
invert tile. (IN). 
(7) Ditch 97-D-l. Install one-half round 
invert tile resetting the 12H culvert, if required, and includ- 
ing the indicated tributary. (IN). 
127 (8) Ditch 97-F. Pave invert and side slopes 
from junction with 97 to 19' x 61 culvert just downstream from 
junction with 97-F-8, (LRD). Pave invert and side slopes from 
golf course water hazard near junction with 97-F-16 to junction 
with 97-F-19. (LRD). Install one-half round invert tile from 
junction with 97-F-19 to end of water in ditch approximately 
200 feet above junction with 97-F-20, (IN). 
(9) Ditch 97-F-l. Connect into ditch 97 
and recondition, (IN). 
(10) Ditches 97-F-l-A. 97-F-2 and 97-F-3. 
Install one-half round invert tile in these ditches including 
the indicated tributaries. (IR). 
(11) Ditch 97-F-A. Install one-half round 
invert tile in Unpaved section for approximately 100 feet above 
junction with 97-F. (IN). Repair side walls where ditch passes 
under fence just above junction with 97-F-4-A. (IN). Install 
one-half round invert tile from junction with 97-F-A-C to end. 
(NFD). 
(12) Ditches 97-F-A-A and 97-F-A-B. Install 
one-half round invert tile, (NFD). 
(13) Ditch 97-F-A-B. Install one-haIf round 
invert tile in the two short feeds into this ditch from motor 
pool area. (NFD). 
(U) Ditches 97-F-5 and 97-F-6. Install one- 
half round invert tile including indicated tributaries. (IN). 
(1$) Ditch 97-F-7. Install one-half round 
invert tile from junction with 97-F to a point 1$0 feet from end. 
(IN). 
(16) Ditch 97-F-8. Install one-half round 
invert tile. (IN), 
(17) Ditch 97-F-8-1. Install one-half round 
invert tile including the indicated tributaries. (IN). 
(18) Ditch 97-F-9. Install one-half round 
invert tile. (IN). 
(19) Ditch 97-F-10. Recondition throughout, 
completing unpaved section of about 6 feet at inlet to culvert 
under road. (IN). 
(20) Ditch 97-F-11. Install one-half round 
invert tile, (IN). 
(21) Ditch 97-F-12. Install one-half round 
invert tile from junction with 97-F to corner of Beer Garden. (IN). 
128 (22) Ditch 97-F-13, Pave inlet to this culvert. 
(IN). 
(23) Ditch 97-F-14. Straighten and pave invert 
and side slopes from junction with 97-F to junction with 97-F-14-E. 
(LiiD). See subsequent report for system above this point and 
ditches 97-F-14-D and 97-F-14-E. 
(24) Ditch 97-F-14-A. Install one-half round 
invert tile from junction with 97-F-14 to a point 200 feet above .. 
junction with 97-F-14-A-1. Recondition junction with 97-F-14-A-1. 
(IN). 
(25) Ditch 97-F-14-B. Install one-half round 
invert tile from junction with 97-F-14 to beginning of existing 
paved section. (LRD). 
(26) Ditch 97-F-14-C. Recondition throughout 
and pave side slopes to within 300 feet of end. Repair side walls 
for the upper 300 foot section* (IN). 
(27) Ditches 97-F-15. 97-F-I6. 97-F-17. 
97-F-1B and 97-F-19. Install one-half round invert tile in 
unpaved sections of these ditches including the indicated tribu- 
taries. Recondition and/or replace paved sections. (IN). 
(28) Ditches 97°G and 97-H. Install one-half 
round invert tile. (IN). 
(29) Ditch 97-J. Install one-half round invert 
tile from junction with 97 to 18" culvert under Bolivar Highway. 
Pave inlet to 18" culvert, (IN). 
(30) Ditch 97-J-l. Install one-half round 
invert tile. (IN). 
(31) Ditch 97-K. Install one-half round 
invert tile. (IN}* 
(32) Ditches 97-L, 97~Mt 97-N and 97-P. 
Regrade to eliminate local pooling of water. (IN). Install one- 
half round invert tile. (LRD). 
(33) Ditch 97-Q. Complete junction with 97, 
Install one-half round invert tile for 100 feet upstream from 
culvert under Bolivar Highway. (IN). 
(34) Ditch 97-Q°l. Install one-half round 
invert tile. (IN). 
(35) Ditch 97-3. Regrade. (IN). 
(36) Ditch 97-T. Pave invert and side slopes, 
(IN). 
129 (37) Ditch 97-U. Install one-half round 
invert tile to a point 100 feet from end. Lower 6n culvert under 
Bolivar Highway, if required, to obtain outlet for this ditch, 
(IN). 
(38) Ditch 97-U-l. Install one-half round 
invert tile. (IN). 
(39) Ditch 97-V. Install one-half round 
invert tile in sections now unpaved to a point 200 feet from end. 
(IN). Recondition existing paved section. (IN). 
(4-0) Ditch 97-V-l. Install one-half round 
invert tile for 50 feet upstream from junction with 97-V. (IN). 
(4-1) Ditch 97-V-2. Clean 6M culvert in this 
ditch. (IN). 
(42) Ditch 97-V-3. Install one-half round 
invert tile from junction with 97-V to outlet of 30H culvert. (IN). 
(4-3) Ditch 97-V-4. Recondition this ditch 
throughout. (IN). 
(44-) Ditch 97-V-4.-A. Regrade. (IN). 
(4-5) Ditch 97-V-5. Install one-half round 
invert tile from junction with 97-V to outlet of culvert. (IN). 
(46) Ditches 97-V-6. 97-V-7 and 97-V-8. 
Install one-half round invert tile. (IN). 
(47) Ditch 97-V-9. Eliminate extensive erosion 
hole at junction of this ditch with 97-V. (IN). 
(48) Ditch 97-W. Install one-half round invert 
tile from junction with 97 to 20 feet upstream from inlet to 15" 
culvert, (IN), 
(49) Ditches 97-X. 97-Z and 97-AA. (Panama 
Canal property). See subsequent report for these ditches. 
(50) Ditch 97-Y. Install one-half round invert 
tile. (Panama Canal property). (NFD). 
(51) Ditch 97-BB. Install one-half round invert 
tile from junction with 97 to 36” culvert under railroad. (Panama 
Canal property), (NFD). 
(5.2) Ditch 97-CC. Install one-half round invert 
tile from junction with 97 to junction with 97-CC-l, (NFD). 
130 (53) Ditch 97-DD. Install one-half round invert 
tile from junction with 97 to within 200 feet of junction with 
97-DD-6. (LED). 
($4-) Ditch 97-EE. Install one-half round invert 
tile for 20 feet above junction with 97. (LRD). 
(55) Ditch 97-FF. Install one-half round invert 
tile from junction with 97 to 300 feet upstream from junction with 
97-FF-4-. (LED). 
(56) Ditch 97-FF-4.. Install one-half round 
invert tile for 50 feet upstream from junction with 97-FF. (LRD). 
(57) Ditch 97-GG. Install one-half round invert 
tile from junction with 97 to end of water approximately 600 feet 
upstream from this junction. 
(5B) Ditch 97-HH. Install one-half round in- 
vert tile from junction with 97 to a point 50 feet upstream from 
culvert under railroad, (LkD). 
e Miscellaneous items in area tributary to Drain- 
age System No. 97. 
(1) Drain extensive pool of water impounded 
by road to radio transmitter tower by installing 12" diameter 
culvert under road. (IN). 
(2) Fill extensive ruts on both sides of 
ditch 97-C. (IN). 
(3) Fill extensive ruts on west side of 
Bolivar Highway about 500 feet southwest of junction of ditches 
97-B and 97-B-2. (IN). 
(4) Fill hole located about 200 feet north- 
east of junction of ditches 97 and 97-D. (IN), 
(5) Fill local depressions in area between 
Bolivar High?/ay and ditch 97 from ditch junctions 97 with 97-F 
to 97 with 97-T. (IN). 
(6) Fill local depressions in area between 
Panama Railroad and Bolivar Highway from end of ditch 97-Q-l to 
end of ditch 97-U. (IN). 
(7) Provide roof drainage system for guard 
house, (LRD), 
(8) Eliminate pot hole at junction of sewer 
entering ditch 97 between junctions of this ditch with 97-T and 
97-V. (IN). 
131 (9) Extend ditch 97-F-6 with one-half round 
invert tile to drain low area near end of this ditch„ (IN)0 
(10) Eliminate pot hole at ditch entering ditch 
97-F at * point about 250 feet upstream from junction of 97-F and 
97-F-4- (IN). 
(11) Fill areas located at points about 200 
feet northwest of and 200 feet southwest of junction of ditch 
97-F-4 and 97-F-4-B. (IN). 
(12) Fill extensive local depressions in area 
located between Post Chapel and ditch 97-F-4.. (IN). 
(13) Drain seepage area located about 300 feet 
northwest of junction of 97-F and 97-F-13. (IN)* 
(14) Eliminate pot hole located in south bank 
of ditch 97**F-14 at a point about 600 feet upstream from junction 
of 97-F and 97-F-14. (IN). 
(15) Fill depression in north bank of ditch 
97-F-14-A at a point about 300 feet upstream from junction of this 
ditch with 97-F-14. (IN). 
(16) Recondition roof drainage system around 
building located in V between ditches 97-F-14-A and 97-F-14. (IN), 
(17) Eliminate large pot hole in east bank of 
ditch 97-F-14-C at a point about 150 feet upstream from junction 
of this ditch with 97-F-I4. (IN). 
(18) Fill extensive local depressions in area 
located in V formed by ditch 97-F at junction with 97-F-14. 
Install one-half round invert tile drain for area west of junction 
of 97-F and 97-F-15. (IN). 
(19) Improve upper end of golf water hazard 
pool at junction of 97-F and 97-F-16 by adding concrete walls. 
(LRD)o 
I 
(20) Regrade area located in V between ditches 
97-F and 97-F-15. (IN). 
(21) Fill area located about 250 feet south 
of junction of ditches 97-F and 97-F-15. (IN), 
(22) Fill and regrade area around ditches 
97-F-17, 97-F-18 and 97-F-19 to drain into these ditches. (IN), 
. 1 (23) Fill hole on north bank of ditch 97-F 
at a point about 250 feet downstream from junction of this ditch 
with ditch 97-F-20. (IN). 
132 (24-) Extend ditch 97-V-4--B with laterals as 
required to drain extensive ground water outcrop located near end 
of this existing ditch. Install one-half round invert tile in 
entire system. (IN). 
(25) Install one-half round invert tile in 
ditch at rear of field officers1 quarters. (LED), 
(26) Drain swamp located on east side of 
ditch 97-Y by one-half round invert tile laterals into ditch 97-Y. 
(Panama Canal property). (NFD). 
(27) Drain swamp located about 100 feet south- 
west of outlet of 36" culvert under railroad in ditch 97-BB by 
one-half round invert tile lateral into this ditch, (Panama 
Canal property). (NFD). 
(23) Fill large hole on east side of Panama 
Railroad at a point about 200 feet west of junction of ditches 
97 and 97-E. (Panama Canal property). (IN), 
f. Drainage System No. 98. 
(1) Ditch 93. See subsequent report for 
recommendations this ditch, 
(2) Ditch 98-N. Install one-half round in- 
vert tile from junction with 98 to a point 40 feet upstream from 
junction with 98-N-2, (NFD). 
(3) Ditch 98-N-l. Install one-half round 
invert tile, (NFD). 
(4) Ditch 98-N-2. Install one-half round 
invert tile for 10 feet upstream from junction with 98-N. (NFD), 
g. Drainage System No. 99.* System is in possible 
influence area of Third Locks Project and all recommendations made 
herein should be coordinated with plans for that project. 
(1) Ditch 99-a. Install one-half round in- 
vert tile from junction with 99-A-l to junction with 99-A-5. 
(Pana&a Canal property). (LKD), 
(2) Fill and drain or provide positive salt 
water circulation to large swamp located on both sides of ditch 
99. (Panama Canal property ). (LRD). 
(3) Fill ruts and minor depressions in area 
between Panama Canal and newly located Panama Railroad for the 
section north of the Gatun - Fort Davis Highway. (Panama Canal 
Property). (IN). 
h. Drainage System No. 100. System is in possible 
influence area of Third Locks Project and all recommendations made 
herein should be coordinated with plans for that projiect. 
133 (1) Ditch 100. Recondition side walls of 
lower section, if it is not to be affected by lock excavation. 
Pave invert and side slopes or otherwise incorporate in final 
Third Locks Project Plans the section of ditch above junction 
with 100-G. Overflow from flooded excavated section is now pour- 
ing into ditch through 100-G, resulting in practical stagnation 
of ditch 100 above junction with 100-G. (Panama Canal property). 
(LED). Continue oiling this section of ditch or as alternate, the 
overflow point from flooded section might be moved upstream as 
far as practicable to produce current in ditch. (Panama Canal 
property). (IN). 
' ’ (2) Ditch 100-A. Install one-half round 
invert tile. (Panama Canal property). (LED). 
(3) Ditch 100-C and 100-C-1. Install one- 
half round invert tile, regrading area at upper end of ditch 
100-C to drain into it, (Panama Canal property). (LRD). 
(4-) Ditch 100-E. Install one-half round 
invert tile from junction with ditch 100 to 4-00 feet above 
junction with 100-E-l. (Panama Canal property). 
(5) Ditch 100-E-l. Install one-half round 
invert tile from junction with 100-E to culver under highway. 
(Panama Canal property). (LED). 
(6) Ditch 100-Fo Install one-half round 
invert tile. (Panama Canal property). (LRD), 
(7) Fill low areas and install one-half round 
invert tile as required to completely drain area bounded by 
Panama Canal, ditches 100 and 101 and Gatun - Fort Davis Highway. 
(Panama Canal property), (LRD). 
(8) Fill ruts and drain seepage areas in 
areas between ditch 100 and Gatun-Fort Davis Highway in vicinity 
of junction of ditches 100 and 100-G. (Panama Canal property). 
(IN) o 
k. Drainage System No. 101. System is in pos- 
sible influence area of Third Locks Project and all recommendations 
made herein should be coordinated with plans for that project. 
(1) Ditch 101-C. Install one-half round 
invert tile with subsurface drains into extensive seepage areas 
on both sides and at end of this ditch. (Panama Canal property). 
(LRD). 
(2) Drain area which is impounding water and 
which is located about 4.00 feet south of junction of ditches 
101 and 101-C. (Panama Canal property). (LRD). 
134 — L E G E N D — 
scale : r=zoo'(A^ro*.) 
war department 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FORT DAVIS . C. Z. 
/ roua/o hvv£/rt Tn e~ Ditch 
rt/LL COHCRE T£~ DITCH 
omr o/rc// 
CUE V£-RT 
NOTE: No fat ions in circles thus to subdivisions 
of section Af of a.ccomRany/hg report 
office of the dcrcsufkieon APPROVED 
asst, oner state e--» 
depute dept. commands/r 
-- - . 
/VOI/., /94S /vs AfC-SS 
J ‘ — L E- G & N D 
NOTE■ Nartsiions in circles tbus(^yrefer -ft subdivisions 
of section /4 of accompanying report. 
SCALE: /** 200' 
{ n.OuAUD //V«r/?7- T/UF OrrCH 
ruLL COA/CpA 7£ PITCH 
p/n~r D/TC.H 
CUL V£H T 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
FORT DAVIS, C.Z. 
Office OF -rut tXPT sugacQN APPROVED 
/?£ COMMtNOCOyQc^yJJL 
c»»r- s**- AssTcr/rr staff m-+ 
os„UTr comma*orn 
A/OV< Cf'n'w'o /vs Kic~/<f 
— Recommended George W. Hamilton 
Captain, Sanitary Corps. 
% 
Approved 
Colonel, Medical Corps. 
* 
APPROVED: 
assistant Chief of Staff, G-A 
Deputy Department Commander MALARIA CONTROL - DRAINAGE SURVEY 
panama canal department 
13 JANUARY 19U 15. SPECIFIC REPORT ON FORT RUDOLPH AMD VICINITY. 
aREa MO. 12 ). 
a. Area included. Fort Randolph and vicinity as 
indicated on accompanying map M.C. 20, 
b. Drainage System No, 102. 
(1) Ditch 102. Install one-half round 
invert tile from junction with 102-A to 150 feet upstream from 
culvert under.new road to battery. Regrade and fill area above 
this culvert so that it will completely drain. (IN), 
(2) Ditch 102-A. Regrade. (IN). 
c. Drainage System No. 103. 
(1) Ditch 103. Install one-half round invert 
tile from a point 50 feet upstream from junction with 103-A to 
24" culvert under access road, (NFD). 
(2) Regrade area south of ditch 103-A. (IN). 
d. Drainage System No. 104. 
(1) Ditch 104. Install one-half round invert 
tile from junction with 104-A to end of ditch. (NFD). 
(2) Ditch 104-B. Install one-half round in- 
vert tile from junction with 104 to junction with 104-B-l. (NFD). 
(3) Ditch 104-C. Install one-half round invert 
tile for 100 feet upstream from junction with 104. (NFD). 
(4) Fill ruts in area located about 200 feet 
northwest of junction of 104 and 104-C. (IN). 
e Drainage System No. 105. 
(1) Ditches 105-A. 105-A-l and 105-A-2. 
Install one-half round invert tile, (NFD). 
(2) Fill or regrade several garden ditches 
between ditches 105 and 105-A-l. (IN). 
(3) Fill holes on north side of ditch 105 
at entrance to baseball grandstand. (IN). 
(4) Fill holes at end of ditch 105. (IN). 
f. Drainage System No. 106. 
fc(l) Ditch 106-B. Install one-half round invert 
tile. (LRD). 
139 (2) Replace 6n culvert located in ditch 106 
just upstream from junction with 106-D. (NFD). 
g. Drainage System Noc 107. 
(1) Ditch 107. Install one-half round invert 
tile from a point 100 feet downstream from outlet of 24” culvert 
just below junction of 107 and 107-C to end of system. (IN). 
(2) Ditch 107-Bo Install one-half round 
invert tile from junction with 107 to outlet of 18” culvert 
under road. (IN), 
(3) Ditch 107-C. Install one-half round 
invert tile from junction with 107 to 20” culvert under road. (IN), 
h. Drainage System No. 108. 
(1) Ditch 108. Install one-half round invert 
tile from junction with 108-A to end of system. (IN). 
(2) Ditch 108-A. Install one-half round 
invert tile from junction with 108 to junction with 108-A-l. 
Regrade remainder of system. (IN). 
(3) Ditch 108-B. Install one-half round 
invert tile. (IN). 
k. Drainage System No. 109. 
(1) Ditch 109. Recondition section immediately 
upstream from junction with 109-C. (IN). Install approximately 
200 feet of one-half round invert tile for section immediately 
upstream from junction with 109-E. (IN). Regrade section immediate- 
ly upstream from junction with 109-F. (IN). 
(2) Ditch 109-B. Install one-half round 
invert tile from a point 100 feet upstream from junction with 
109 to end of system. (IN). 
(3) Ditch 109-B-l. Eliminate erosion hole at 
junction of this ditch with 109-B. (IN). 
(4-) Ditch 109-B-2. Install one-half round 
invert tile including all of the indicated tributaries. (IN). 
(5) Ditch 109-C. Install one-half round 
invert tile from junction with 109 to next 20” culvert upstream 
from this point. (IN). 
(6) Ditch 109-D. Install one-half round 
invert tile including all of the indicated tributaries. (IN), 
(7) Ditches 109-E. 109-E-l and 109-E-2. 
Install one-half round invert tile. (IN), 
140 (8) Ditch 109-F. Install one-half round 
invert tile. (IN), 
(9) Drain road intersection located about 200 
feet west of junction of ditches 109-B and 109-B-2. (IN), 
(10) Regrade area located between ditch 109 
and NCO quarters. (IN). 
(11) Fill extensive ruts located near end of 
ditch 109-E. (IN). 
m. Drainage System No. 110. 
Ditch 110. Clean and recondition entire sys- 
tem and adjacent area so that positive salt water circulation 
is effected, (NFD). 
n. Drainage System No. 111. 
(1) Ditch 111. Glean and recondition entire 
system so that positive salt water circulation is effected. (NFD), 
(2) Fill hole and trench located about 100 
feet southwest of outlet of ditch 111, (NFD). 
JB» Drainage System No. 112. 
(1) Ditch 112, Recondition end of ditch. (IN). 
(2) Ditches 112-A. 112-B. 112-C. 112-D. 112-E. 
112-F and 112-G. Install one-half round invert tile in these 
ditches including the indicated tributaries. (IN), 
(3) Ditch 112-H. Install one-half round 
invert tile from junction with 112 to junction with 112-H-l. (IN). 
(4-) Ditch 112-H”!. Install one-half round 
invert tile from junction with 112-H to a point 40 feet upstream 
from this junction, (IN), 
g. Drainage System No. 113, 
Ditch 1.13o Recondition end of ditch. (IN). 
r. Drainage System No. 114.. 
Ditch 114, Install 60 feet of one-half round 
invert tile at the end of ditch. (IN). 
s, Miscellaneous improvements. 
(1) Fill extensive holes and depressions in 
area located about 200 feet south of ditch 112-H. (IN). (2) Regrade area located about 150 feet south 
of ditch 109-B. (IN) 
(3) Drain and/or fill depression located about 
250 feet northwest of junction of ditches 112 and 112-A. (IN). 
(4-) Install 30 feet of one-half round invert 
tile in section of unpaved ditch located about 200 feet west of 
post theater. (IN). Recommended 
Captain, Sanitary Corps. 
Approved 
Colonel, Medical Corps. 
APPROVED; 
Assistant Chief of Staff, G-4. 
Deputy Department Commander 3CtAL£T.- /~* eooY*/°r>''ey.) 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FORT RANDOLPH, C.Z. 
w/e* thm c*»T. APPROVED 
*KCO~~'^.n&z3r-Aa,T ~~ 
6 (p (Pr.f' OCMUTY OKf>T. COMMArtoem 
ae:c.?/f4y o'n’wa /v» /wc- zo 
~ LEGEND — 
■jf ROC//YO WVfflr r/L£ o/rcH 
FULL co/Ycner-m o/tch 
o/rrr ditch 
cc/Lvsm-r 
NOTE: Notations /A circles thusf^frefer io subdivisions 
of section /S of accompanying report. malaria control - drainage survey 
PaNaMa CaNAL department 
MARCH 19U 16. SPECIFIC REPORT ON FORT GUL1CK AND VICINITY. 
(AREA NO. 13). 
a. Area included. Fort Gulick and vicinity as 
indicated on accompanying Maps M.C. 21 and M.C. 22. 
b0 Drainage System No0 115„ 
(1) Ditch 115o Pave invert and side slopes 
from 6’ diameter culvert under Bolivar Highway to junction with 
115-X. (LED). Install l/2 round invert tile from junction with 
115-X to a point 400* upstream from this junction (LRD), (Part 
Panama Canal property and part Army), 
(2) Ditch 115-a. Remove 24” culvert in this 
ditch at U.S. Navy Oil pipe line crossing. This culvert is inade- 
quate in size and has been set with its flow line elevation approxi- 
mately 15 inches above the flow line of the existing paved ditch. 
These conditions have contributed to the silting up of the entire 
system above this 24” culvert. Clean ditch and recondition side 
walls from this 24” culvert to the 30“ culvert just upstream from 
junction with 115-A-5. (All of above (IN) and Panama Canal 
property). 
(3) Ditch 115-A-l. Install l/2 round invert 
tile, (Panama Canal property LRD)0 
(4) Ditch 115-a-2o Install l/2 round invert 
tile in upper section of this ditch filling low area East of this 
ditch as required to drain into ditch, (Panama Canal property LRD.) 
Clean paved section of ditch 115-A-2 including the indicated 
tributarie s, (IN). 
(5) Ditch 115-A-3. Install 1/2 round invert 
tile from junction with 115-A to junction with 115-A-3-A, (Panama 
Canal property LRD.) 
(6) Ditch 115-Bo Open ditch at U.S. Navy 
oil pipe line crossing where ditch is totally obstructed, impound- 
ing stagnant water for several hundred feet upstream from this 
point, (Panama Canal property, IN) Install l/2 round invert 
tile from junction with 115 to 24n culvert at junction with 
115-B-l. (NFD) 
(7) Ditch 115-C. Pave invert from junction 
with 115 to junction with 115-C~3e (Panama Canal Property. NFD)/ 
(8) Ditches 115-C-l and 115-C-2. Install l/2 
round invert tile. (Panama Canal Property NFD). 
(9) Ditch 115-D. Pave invert and side slopes 
from junction with 115 to junction with 115-D-l. Install l/2 round 
invert tile from this point to end of system. (Panama Canal 
property. IN). 
147 (10) Ditch 113-D-l. Install l/2 round invert 
tile, (Panama Canal property* IN), 
(11) Ditch 115-E. Install l/2 round invert 
tile, (Panama Canal property. LRD) 
(12) Ditch 115-F. Pave invert and side slopes. 
(Panama Canal property. IN) 
(13) Ditches 115-F-l and 115-F-2. Install 
1/2 round invert tile in each ditch for 150 feet upstream from 
junctions with 115~Fo (Panama Canal property IN), 
i 
(14) Ditches 115-G and 115-G-l. Install l/2 
round invert tile, (Panama Canal property IN), 
(15) Ditches 115-H and 115-H-I-a. Install l/2 
round invert tile, (Panama Canal property IN), 
(16) Ditch 115-H-l. Install l/2 round invert 
tile from junction with 115-H to a point 50 feet upstream from 
junction with 115-H-l-A, (Panama Canal property IN), 
(17) Ditch 115-J. Pave invert and side slopes 
from junction with 115 to junction with 115-J-4* (Part Panama 
Canal and part Army property IN), 
(18) Ditches 115-J-2 and 115-J-3. Install 
l/2 round invert tile, (IN) 
(19) Ditch 115-K. Install l/2 round invert 
tile, (IN) 
(20) Ditch 115-L. Regrade section from junction 
with 115 to culvert under access highway (IN). Pave invert and 
side slopes (LED), 
(21) Ditch 115-Mo Pave invert and side slopes 
from junction with 115 to end of system (IN), 
(22) Ditch 115-M-l, Install l/2 round invert 
tile from junction with 15-M to junction with 115-M-l-B, (IN), 
(23) Ditch 115-M-l-A. Install l/2 round invert 
tile (IN), 
(24) Ditch 115-M-2, Install l/2 round invert 
tile from junction with 115-M to junction with 115-M-2-A, (IN), 
(25) Ditch 115-M-3, Install l/2 round invert 
tile (IN), 
(26) Ditch 115~M”4. Install l/2 round invert 
tile (LRD). 
148 (27) Ditches 115-N and 115-N-l. Install l/2 
round invert tile. (IN). 
(28) Ditch 115-P. Install l/2 round invert 
tile for 150 feet above junction with 115. (IN) 
(29) Ditches 11$-Q and 115-R. Install 1/2 
round invert tile. (IN), 
(30) Ditch 115-S. Install l/2 round invert 
tile for 250 feet upstream from junction with 11$. (IN). 
(31) Ditch 115-U. Install l/2 round invert 
tile from junction with 1$ to a point 100 feet upstream from 
junction with ll$-U-2. (IN) 
(32) Ditch 115-U-l. Install 1/2 round invert 
tile for 60 feet upstream from junction with 11$-U. (IN) 
(33) Ditch 115-U-2. Install l/2 round invert 
tile, (IN) 
(34.) Ditch 115-V. Install l/2 round invert 
tile from junction with 11$ to a point $0 feet upstream from the 
12" culvert located about opposite the midpoint of the post 
laundry. (IN) 
(35) Ditch 115-W. Install l/2 round invert 
tile from junction with ** $ to a point 1$0 feet upstream from 
junction with 11$-W-1. (IN) 
(36) Ditch 115-W-l. Install l/2 round in- 
vert tile. (IN) 
(37) Ditch 115-X. Install l/2 round invert 
tile from junction with *** to a point 4-00 feet upstream from 
this junction. (IN) 
c. Drainage System No. 116. 
(1) Ditch 116. 
(a) See subsequent report for section 
below junction with 116-E. 
(b) Improve channel from junction with 
116-E to junction with 116-Q removing fallen trees and other 
debris. Avoid the destruction of shade. (Part Panama Canal and 
part Army property. IN) 
(c) Pave invert and side slopes from 
junction with 116-E to 116-Q, (Part Panama Canal and part Army 
property, LRD). 
**Illegible 
149 (d) Pave invert and side slopes from 
junction with 116-Q to 116-V, regrading areas on each side of 
ditch to drain into it. (IN) 
(c) Improve channel which is predominant- 
ly reasonably smooth rock outcrop from junction with 116-V to a 
point 200 feet upstream from junction with 116-Z. This is to be 
accomplished by a combination of regrading, filling depressions 
with lean concrete and installing l/2 round invert tile or paved, 
sections for parts where rock outcrop does not form a naturally 
paved channel. (LRD). Install 1/2 round invert tile for 
section above 8" culvert and paralleling magazine area road. (LED) 
(2) Ditch 116-Eo Pave invert from junction 
with 116 to a point 600 feet above this junction. (Panama Canal 
property. LRD) 
(3) Ditch 116-F. See subsequent report for 
this ditch. 
(4-) Ditch 116-G. Install l/2 round invert * 
tile with laterals as required to completely dry up marshycareas 
on each side of this ditch. (Panama Canal property. LRD). 
(5) Ditch 116-H. Pave invert from junction 
with 116- to 116-H-2. Improve channel from junction with 116-H-2 
to junction with 116-H-3 in the manner suggested under section 
16-C-l-e. (Panama Canal property LRD). See subsequent report 
for ditch upstream from junction with 116-H-5. 
(6) Ditch 116-H-l, Improve channel from 
junction with 116-H to end of system in the manner suggested 
under Section 16-C-l-e. (Panama Canal property LRD) 
(7) Ditches ll6-H-*2 and 116-H-R. See sub- 
sequent report for these ditches. 
(8) Ditches 116-H-3 and 116-H-5. Improve 
channels of these ditches in the manner suggested under Section 
16-C-l-e. (Panama Canal property LRD). 
(9) Ditch 116-J. Install l/2 round invert 
tile from junction with 116 to junction with 116-J-2. 
Improve channel above junction with 116-J->2 in the manner sug- 
gested under Section 16-C-l-e. (Panama Canal property LRD). 
(10) Ditches 116-J-l. 116-J-2 and 116-J-3. 
Install l/2 round invert tile in each of these ditches. (Panama 
Canal property LRD). 
(11 Ditches 116-K. 116-L. 116-M. 116-N and 
116-P. Install l/2 round invert tile. (LRD) 
(12) Ditch 116-Q. Pave invert and side slopes 
from junction with 116 to 10 feet upstream from 18" culvert under 
highway. Find source of and connect outcrop of sanitary sewage 
located about 100 feet southwest of this 18" culvert into ditch 
116-Q with a closed sewer. (IN). (13) Ditch 116-R. Pave invert and side walls 
from junction with 116 to junction with 116-R-l. Install l/2 
round invert tile in remainder of ditch, (IN) 
(1-4) Ditch 116-R-l. Pave invert and side 
slopes. (IN) 
(15) Ditch 116-S. Install l/2 round invert 
tile. (IN). 
(16) Ditches 116-T. 116-T-l. 116-T-2. 116-T-3. 
116-1-4 and 116-1-5. Improve channels of these streams in accord- 
ance with method suggested in Section 16-C-l-e. (USD) 
(17) Ditch 116-U. Install sub-surface drain 
packed in large rock or pave invert and side slopes. (IN) 
(18) Ditch 116-V. Install sub-surface drain 
and/or pave invert. Eliminate seepage area on south bank of 
ditch just upstream from junction with 116-V-2 by the use of 
l/2 round invert tile and sub-surface drains. (IN) 
(19) Ditch 116-V-l. Improve channel in manner 
suggested in section 16-C-l-e. Include all of the indicated tribu- 
taries. (LED) 
(20) Ditch 116-V-2. Pave invert and side 
slopes and/or install sub-surface drain packed in large rock, (IN) 
(21) Ditches 116-W. 116-X. 116-1, 116-Z and 
116-ZZ. Improve channels by method suggested in section 16-C-l-e. 
(LED) 
d. Drainage System No, 117, 
(1) Ditch 117. Install l/2 round invert tile 
in upper 150 feet of this ditch. (IN) 
e. Drainage System No. 118. 
(l) Ditch 118. Install l/2 round invert 
tile in sections of this ditch where bottom is not naturally paved 
by rock outcrop. In sections where rock is outcroping smooth 
profile by filling depressions with lean concrete, (IN) 
f. Drainage System No. 119. 
(1) Ditch 119. Install l/2 round invert tile 
from a point 100 feet upstream from Qatun Lake to a point 150 
feet upstream from junction with 119-B. (IN) 
(2) Ditch 119-Bo Install l/2 round invert 
tile from junction with 119 to junction with 119-B-l, (IN) 
151 g, Drainage System No. 120. 
(1) Ditch 120, Install l/2 round invert tile 
from a point about 200 feet upstream from junction with 120-0 
which point is approximately the elevation of the East Diversion 
Channel water level to end of system0 (Panama Canal property USD). 
(2) Ditch 120-C. Install l/2 round invert 
tile from a point about 100 feet upstream from junction with 120 
to junction with 120=0-1. ( i.ama Canal property LRD) 
h Drainage System No. 121. 
(1) Ditch 121. Pave invert and side slopes 
from a point about 500 feet upstream from junction with 121-A, 
which point is the East Diversion Channel water level, to junction 
with 121-F. See subsequent report for recommendations above this 
point. (Panama Canal property LRD). 
(2) Ditch 121-B. Pave invert from junction 
with 121 to junction with 121-B-l, See subsequent report for 
recommendations above this point. (Panama Canal property LRD). 
(3) Ditch 121-B-l. Pave invert from junction 
with 121-B to end of system. (Panama Canal property LRD). 
U) Ditch 121-B-l-A. Install l/2 round 
invert tile. (Panama Canal property LRD). 
(5) Ditch 121-B-l-B. Install 1/2 round invert 
tile from junction with 121-B-l to the next 18” 0 culvert under 
road. (Panama Canal property LRD) 
(6) Ditch 121-Co Install l/2 round invert 
tile from junction with 121 to end of system. (Panama Canal 
property LRD) 
(?) Ditch 121-Do Install l/2 round invert 
tile. (Panama Canal property LRD) 
(8) Ditch 121-D-l. Fill this ditch which is 
a dead end of an abandoned channel. (Panama Canal property LRD). 
(9) Ditch 121-E. Install l/2 round invert 
tile from junction with 121 to the 36” culvert indicated. (Panama 
Canal property LRD). 
(10) Ditch 121-Fo Install l/2 round invert 
tile from junction with 121 to.end of ditch. (Panama Canal proper- 
ty LRu). 
(11) Fill all of the abandoned ditch channels 
from which the normal watershed has been diverted for the section 
of Ditch 121 between the indicated earth dike and junction with 
121-F, (Panama Canal property LRD), 
152 (12) Ditch 121-H. See subsequent report for 
system downstream from junction with 121-H-12. From junction 
with 121-H-12 to junction with 121-H-15, improve stream by the 
installation of paved sections, by sub-surface drains packed in 
rock, or by filling depressions in ditch bottom with lean concrete 
where rock outcrop can be utilized as a naturally paved ditch. (LRD) 
(13) Ditch 121-H-12. Pave invert from junction 
with 121-H to junction with 121-H-12-D. (LED) 
(U) Ditch 121-H-12-A. Install l/2 round 
invert tile. (LRD). 
(15) Ditch 121-H-13. Pave invert from junction 
with 121-H to end of system. (LRD). 
(16) Ditch 121-H-13-A. Pave invert from junction 
with 121-H-13 to a point 4-00 feet upstream from this junction. (LRD) 
(17) Ditch 121-X. See subsequent report for 
system downstream from junction with 121-X-12. Improve channel 
from junction with 121-X-12 to junction with 121-X-IX by installing 
paved sections, sub-surface drains packed in rock, or converting 
rock outcrop into a smoothly paved channel by filling depressions 
with lean concrete, (LRD). 
(18) Ditches 121-X-12 and 121-K-12-A. Install 
paved sections, sub-surface drains packed in rock or convert rock 
outcrop into a smoothly paved channel by filling depressions with 
lean concrete. (LRD) 
153 Recommended 
Captain, Sanitary Corps 
Approved 
Colonel, Medical Corps. 
APPROVED: 
Assistant Chief of Staff, G-A 
Deputy Department Commander 
155  - 
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- rCfLL CONCRETE D/TCH 
— D/RT O/TCH 
CUL VERT 
NOTE: Notations in circles thus.(prefer to subdivisions 
of section /g of accompanying report. 
SCALE: r*ZOO' fAp/orOX.) 
WAR DEPARTMENT 
panama canal department 
drainage SURVEY 
MALARIA CONTROL 
FORT GUL1CK, C.Z. 
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WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL. 
FORT GUUCK, C.Z. 
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NOTE- Notations in circles fhus@ refer to subdivisions 
nf section le of accompanying report 
scale: /"=zoo'(Appro*.) MALARIA CONTROL - DRAINAGE SURVEY 
PANAMA CaNaL DEPARTMENT 
APRIL 19UU 17. SPECIFIC REPORT ON FRANCE FIELD ( AREA NO. 14) 
a. area included. France Field and vicinity as 
indicated on accompanying maps M.C. 23, M.C. 24, M.C. 25 and M.C. 
26. 
b, Drainage System No. 122. 
(1) Ditch 122. Straighten and pave invert 
and side slopes from junction with 122-J to junction with 122-T 
(LRD), Pave invert and side slopes from junction with 122-T 
to outlet of next 2 - 24" culverts (IN). 
(2) Ditches 122-A and 122-B. Install 1/2 round 
invert tile. (IN). 
(3) Fill depressions located in area between ditch 
122-B and highway to Ft. Randolph (IN). 
(4) Fill or open to permit access for salt water, 
the area located about 700 feet south of point where ditch 122 
discharges into bay (IN). 
(5) Ditch 122-D. Regrade ditch from junction with 
122-D-7 to a point 200 feet upstream from this junction (IN). 
Install l/2 round invert tile from junction with 122-D-8 to end of 
system (LRD). Regrade and fill area on both sides of ditch near 
upper end to eliminate extensive pooling of stagnant water (IN). 
(6) Ditch 122-J. Install 1/2 round invert tile 
from junction with 122 to the point where existing ditch is 
paved (IN), 
(7) Ditches 122-J-l and 122-J-l-A. Install l/2 
round invert tile. (IN) 
(8) Ditch 122-J-l-B. Open the outlet of this 
ditch so that it will drain into 122-J-l (IN), 
(9) Ditch 122-J-2. Install l/2 round invert tile 
(LRD). 
(10) Ditch 122-J-3. Install l/2 round invert tile 
from junction with 122-J to junction with 122-J-3-A (LRD). 
(11) Regrade area between barracks area and ditch 
122-J and complete l/2 round invert tile ditches from these 
barracks (IN). 
(12) Ditches 122-L. 122-M and 122-N Install l/2 
round invert tile (LRD). 
(13) Ditch 122-P. Pave invert and side slopes from 
junction with 122 to a point 200 feet downstream from 24" culvert 
from taxiway area (LRD). Pave invert and side slopes from this 
latter 200 foot point to the 24" culvert (IN).. (U) Ditches 122-P-2. 122-P-3, 122-S and 122-T 
Install l/2 round invert tile (LED). 
(15) Regrade area located about 300 feet north- 
east of the end of ditch 122-D (IN). 
(16) Regrade areas around inlet boxes west 
of the north end of the N-S runway. Repair inverts of these in- 
lets so that they will not retain water (IN) 
c, Drainage System No. 123. 
(Ifr Ditch 123. 
(a) Straighten and pave invert and side 
slopes from junction with 123-J to the culverts under the Trans- 
Isthmian Highway (Part Panama Canal and part Array property. (LED). 
See subsequent report for system upstream from these culverts. 
(b) Install new culvert under south end 
of N-S runway, setting invert elevation approximately 3.5 feet 
lower than existing 5 foot diameter culvert to permit complete 
drainage of streams and area upstream from existing culvert (IN). 
(c) Install l/2 round invert tile in all 
of the unpaved ditches indicated as tributaries to ditch 123 
between junctions of 123-P with 123 and 123-Q with 123 (LED). 
(2) Ditch 123 -A. See subsequent report for 
this system. 
(3) Ditch 123-B. This ditch is tidal for its 
entire length and no improvement is thought necessary. 
(4) Ditch 123-C. This ditch is tidal for its 
entire length and no improvement is thought necessary. 
(5) Ditch 123-D. Install l/2 round invert 
tile from junction with 123-D-l to end of system. Fill swampy 
area on both sides of ditch for section near junction with 
123-D-6 to drain to ditch 123-D. Repair sanitary sewer which 
is clogged and overflowing through a manhole located on north 
bank of ditch 123-D near junction with 123-D-4-A. All of above 
(IN). 
(6) Ditch 123-D-3. Install 1/2 round invert 
tile (LED). 
(7) Ditch 123-D-4. Install l/2 round invert 
tile from junction with 123-D to junction with 123-D-4-B (IN), 
Raise grade from this point to end of system by filling old ditch 
channel and install 1/2 round invert tile to maintain local 
drainage (IN). 
(8) Ditch 123-D-4-A. Install l/2 round 
invert tile (IN). 
160 (9) Ditch 123-D-4.-B. Install l/2 round invert 
tile, filling swampy area and both sides of ditch to drain to it (IN) 
(10) Ditches 123-D-5. 123-D-5-A and 123-D-5-B. 
Install l/2 round invert tile (IN). 
(11) Ditch 123-D-6. Install l/2 round invert 
tile from junction with 123-D to junction with 123-D-6-A. Fill 
swampy area on both sides of ditch to drain to it (IN). 
(12) Ditch 123-F. Install l/2 round invert 
tile from junction with 123-F-l to end of system (IN)„ 
(13) Ditches 123-F-2. 123-F-2-A and 123-F-3. 
Install l/2 round invert tile (IN). 
(M) Ditch 123-G. This ditch is tidal for 
its entire length and no improvement is thought necessary. 
(15) Ditch 123-H. Pave invert of section locat- 
ed above elevation d.50 feet (LRD). 
(16) Ditch 123-J and tributaries. 
(a) Ditch 123-J. Pave invert from junction 
with 123 to junction with 123-J-9 (LRD). See subsequent report for 
system upstream from junction with 123-J-9. 
(b) Ditch 123-J-l. Pave invert of section 
located above elevation 0.50 feet (LED). See subsequent report 
for system above junction with 123-J-l-A. 
(c) Ditch 123-J-2. Pave invert of section 
located above elevation 0.50 feet (LED). See subsequent report for 
system above junction with 123-J-2-A. 
(d) Ditches 123-J-3, 132-J-A. 123-J-5. 
123-J-6. 123-J-7. 123-J-7-A and 123-J-8. Pave inverts of sections 
of these ditches located above elevation 0.50 feet (LED). 
(17) Ditch 123-K. Install 1/2 round invert tile 
from junction with 123 to junction with 123-K-1 (LED). 
(18) Ditch 123-L. Install l/2 round invert tile 
(LED). 
(19) Ditch 123-M. Pave invert and side slopes (LRD), 
(20) Ditch 123-N. Install l/2 round invert tile 
from junction with 123 to a point 200 feet upstream from junction 
with 123-N-l (LRD) 
(21) Ditch 123-N-l. Install 1/2 round invert tile 
(LRD). (22) Ditches 123-P. 123-P-l and 123-P-3. 
Install l/2 round invert tile (IN). 
(23) Ditch 123-Q. Pave invert and side slopes 
from junction with 123 to junction with 123-Q-8 (IN). Install 
l/2 round invert tile from this latter point to 24-" culvert under 
runway (IK). 
(24.) Ditch 123-Q”!. Install l/2 round invert 
tile including the indicated tributaries (IN), 
(23) Ditches 123-Q-2 and 123-Q-4.. Install l/2 
round invert tile (IN), 
(26) Ditch 123-Q-3. Install l/2 round invert 
tile from junction with 123-Q to end of system (IN)0 
(27) Ditch 123-Q-3-A. Install l/2 round invert 
tile from junction with 123-Q-3 to junction with 123-Q-3-A-2 (LRD). 
(28) Regrade area located about 200 feet south- 
east of junction of ditches 123-Q-3-A and 123-Q-3-A-2 (IN)0 
(29) Ditches 123-0°3-A-l and 123-Q-3-B. Install 
l/2 round invert tile (LRD), 
(30) Ditch 123-Q..5. Install l/2 round invert 
tile (NFD)c 
(31) Ditch 123-Q-6o Install l/2 round invert 
tile from junction with 123-Q to junction with 123-Q-6-B. Pave 
inlet of 24-" culvert at this latter junction . (IN) 
(32) Ditch 123-Q-7. Install l/2 round invert 
tile including the indicated tributary (IN), 
(33) Ditches 123-Q-3. 123-Q-6-A and 123-Q-9. 
Install l/2 round invert tile.(IN). 
(34-) Ditch 123-Q-10. Install l/2 round invert 
tile (LRD). 
(3$) Regrade area located about 150 feet 
southwest of ditch 123-Q-10 (IN), 
(36) Ditch 123-Rc Fill this ditch which is an 
abandoned major channel and install l/2 round invert tile to 
provide for local drainage (LRD). 
(37) Ditch 123-S, Pave invert from junction 
with 123 to within 4-00 feet of end of system (LED). 
(38) Ditch 123-To Install l/2 round invert 
tile including the indicated tributary (LRD), (39) Straighten and install l/2 round invert 
tile (LED). 
(4-0) Ditch 123-V. Straighten and pave invert 
and side slopes from junction with 123 to outlet of storm sewer 
located about 200 feet upstream from junction with 123-V-4. Fill 
inverts of inlet boxes in sewered section with concrete to elimi- 
nate standing water, (LED), 
(41) Ditches 123-V-2. 123-V-2-A, 123-V-2-A-1. 
123-V-3 and 123-V-3-A. Install l/2 round invert tile (LED). 
(42) Ditches 123-V-l and 123-V-4. Fill and 
abandon (LED). 
(4-3) Ditch 123-W. Pave invert. Fill sections 
of old ditch channel located along south bank of this ditch. (LED), 
(44) Ditch 123-X. Install l/2 round invert 
tile from junction with 123 to a point 200 feet upstream from 
junction with 123-4-1 (LED). 
(45) Ditch 123-X-l. Install l/2 round invert 
tile from junction with 123-4 to a point 300 feet upstream from 
this junction (LED). 
(4-6) Ditch 123-Y. Pave invert from junction 
with 123 to the 24” culvert under the Trans-Isthmian Highway (LED), 
(4-7) Ditch 123-Y-l. Install l/2 round invert 
tile (LED). 
(48) Ditch 123-Y-2. Install l/2 round invert 
tile from junction with 123-1 to junction with 123-I-2-A (LED). 
(49) Ditches 123-Z and 123-A-a. Install l/2 
round invert tile (LED) 
(50) Ditch 123-S-l. Install l/2 round invert 
tile (LED). 
d. Drainage System No. 124. 
(1) Ditch 124. Eegrade and install l/2 round 
invert tile (LED). 
e. Drainage System No. 125, 
(1) Ditch 125. Install l/2 round invert tile 
from junction with the Coco Solo Eiver to the point where existing 
paved section begins (U.S. Navy LED). 
(2) Ditch 125-a. Install l/2 round invert 
tile ( U.S. Navy property LED), 
163 f. Drainage System No. 127, 
(1) Ditch 127. Pave invert and side slopes 
from junction with the Coco Solo River to the 36" rulvert under 
runway (IN). 
(2) Ditch 127-A. Fill ditch which is an 
abandoned major channel and install l/2 round invert tile to 
provide local drainage (IN). 
(3) Ditch 127-B. Pave invert and side slopes 
from junction with 127 to the 60" culvert under runway (IN). 
Install l/2 round invert tile from inlet <bf culvert under 
runway to end of system (LRD). 
(4-) Ditch 127-B-l. Install l/2 round invert 
tile from junction with 127-B to junction with 127-B-l-A (IN). 
Install l/2 round invert tile for remainder of system (LRD). 
(5) Ditch 127-B-2. Reshape inverts of inlet 
boxes in this system to prevent retention 6f water (IN), 
(6) Ditch 127-B-3. Install l/2 round 
invert tile with a culvert under the road to the control 
tower (IN). 
(7) Ditch 127-C. Pave invert and side 
slopes from junction with 127 to junction with 127-C-l (IN), 
Install l/2 round invert tile from this latter point to the 
2 - 13" culverts under roadway (IN), 
(8) Ditch 127-C-l. Install l/2 round 
invert tile from junction with area of impounded water (IN). 
(9) Ditches 127-D and 127-E. Install 
l/2 round invert tile (IN). 
g• Drainage System No. 128, 
(1) Ditch 128. Pave invert and side 
slopes from junction with Coco Solo River to the culvert im- 
mediately upstream from junction with 128-J (LRD). 
(2) Ditches 128-a, 128-B and 128-C. 
Install l/2 round invert tile (LRD). 
(3) Ditch 128-D. Install 1/2 round invert 
tile (Part U.S. Navy property. LRD). 
(4-) Ditch 128-E. Pave invert and side 
slopes from junction with 128 to junction with 128-E-4 (LRD). 
See subsequent report for system above this junction. 
(3) Ditches 128-E-l and 128-E-2. Install 
l/2 round invert tile (LED). 
164 (6) Ditch 12B-E-3. See subsequent report 
for this system. 
(7) Ditch 12B-E-A. Pave invert and side 
slopes from junction with 128-E to junction with 12B-E-4-B 
(LED), See subsequent report for system above this point. 
(8) Ditches 128-E-A-a and 128-E-A-B. 
Install l/2 round invert tile including the indicated tributaries 
(LRD). 
(9) Ditch 12B-Fo Install l/2 round invert 
tile (LED). 
(10) Ditch 126-F-l. Install l/2 round invert 
tile from junction with 12B-F to junction with 12B-F-1-D (LED). 
(11) Ditch 12B~G. Install l/2 round invert 
tile (LRD) 
(12) Ditch 12B-H. Install l/2 round invert 
tile from junction with 12B to junction with 12B-H-1 (LED). 
See subsequent report for system above this junction. 
h. Drainage System No. 129. 
(1) Ditches 129 and 129-A. Fill ditches 
which are abandoned major drainage channels and install l/2 
round invert tile to provide local drainage (IN). 
k. Drainage System No. 130. 
(1) Ditch 130. Fill ditch which is an abandon- 
ed major drainage channel and install 1/2 round invert tile to 
provide local drainagb (IN). 
(2) Ditch 130-A. Install l/2 round invert 
tile (IN). 
m. Drainage System No. 131. 
Ditch 131. Pave outlet of 2L? culvert 
located about 100 feet upstream from junction with 131-A (IN) 
n. Drainage System No. 132. 
(1) Ditch 132. Pave invert and side slopes 
from junction with Coco Solo River to junction with 132-E (LED). 
See subsequent report for system above this junction. 
(2) Ditch 132-a. Install l/2 round invert 
tile from junction with 132 to junction with 132-A-l (LRD). 
(3) Ditch 132-B. Install l/2 round invert 
tile from junction with 132 to junction with 132-B-l (LED). (4) Ditch 132-C. Install l/2 round invert 
tile (LED). 
(5) Ditch 132-D. See subsequent report for 
this system. 
£• Drainage System No. 133, 
Ditch 133. Pave invert and side slopes from 
west fence around fuel storage area to end of system (IN), 
q. Drainage System No. 134. 
(1) Ditch 134. Straighten and pave invert and 
side slopes from France Field By-Pass Road or Naval Reservation 
fence line to the 24" culvert located about 400 feet upstream from 
junction with 134-J*(IN). 
(2) Ditch 134-A. Straighten regrade and in- 
stall l/2 round invert tile from junction with 134 to the 24" 
culvert under taxiway (IN), 
(3) Ditches 134*B.and 134-C. Install l/2 
round invert tile (LED). 
(4) Ditch 134~£o Pave invert from junction with 
134 to the 24" culvert under France Field By-Pass Road (LRD), 
(3) Ditch 134-F. Install l/2 round invert tile 
from relocated section of 134 to junction with 134-F-l (IN). 
(6) Ditch 134-G. Install l/2 round invert tile 
from relocated section of 134 to end of system (IN). 
(7) Ditch 134-H. Ihstall l/2 round invert 
tile (IN). 
(8) Ditch 134-J. Lower culvert under France 
Field By-Pass Road or fill area and raise ditch grade upstream 
from this culvert to eliminate extensive area of impounded water. 
Install l/2 round invert tile from junction with 134 to this 
culvert (IN), 
(9) Ditch 134-J-l. Regrade (IN). 
r. Drainage Systems Nos. 136. 137. 138t 139* 140, 
141. 142. 143. 144 and 145. 
(i) The above ditches, including the indicated 
tributaries, are tidal, and no improvement is considered necessary. 
Periodic maintenance of these ditches will be required. 
166 MOTE: Notations in circ/es thus @ refer to subdivisions 
of section /7 of accompanying report: 
SCA/-/E: /"• ZOO4fApprox.j 
WAR DEPARTMENT 
panama canal department 
drainage: survey 
MALARIA CONTROL 
FRANCE FIELD, C. Z. 
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f=?E. C OMthdE NO to: 
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D’£(T DITCH 
CULVERT NOTE: Notations in circles tt)us(f3)refer to subdivisions 
°f sect-/on /y of accompanying report 
scale:: /“• ZOO' 
»l_ & G E: N P ~ 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
malaria control. 
(new) FRANCE FIELD, C,2. 
3FFIC* OF THI DEPT SOROCON APPROVED 
c/ner srArr a-* 
)t/rt fD <P„tj/ oeAurr oerr. co/vw/woe* 
r 
Dec... /<}■*? A/?V'a a* Art 11 
2 
£ /ToOAfO /r/ver*r r/LE o/rc.» 
x-f/L/. cor/cxre re of net/ 
Of/?r &/rc* 
col VERT MALaRIa CONTROL - DRaINaGE SURVEY 
panama canal department 
APRIL 19UU 
167 18, SPECIFIC REPORT ON GaLETA ISLAND AREA ( aREa NO. 15) 
a. Area included. Ft. Randolph Military Reserva- 
tion North and West of Road to Galeta Point, including Palma Media 
Island, Galeta Island and adjacent area, as indicated on accompany- 
ing Maps M,C, 27 and M.C. 28. 
b. This area for the greater part is a tidal 
swap through which ditches have been cut at frequent and regular 
intervals. These ditches are in excellent condition and permit 
positive salt water flushing of the swampy areas. The areas 
above the swamp are drained by natural and improved drainage 
courses generally having steep slopes and conveying surface 
run-off only with no continuous feeding by ground water. At the 
time the survey was made (March 1944) no water was found in any 
of these ditches. Accordingly, no work is thought necessary in 
this area. 
169 A 
scale:: moo'/'A/0/orox.) 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
GALETA ISLAND AREA 
OPPICK Otr THf OfrtNTTMCNT SU*OCON AlIPPROVED 
aikco/* me:a/aero: . , 
As-sr- arArr a 
*c a f* xm ah. eoV»i 
, £»/=.ery ca-^ar/T 
ySAsv., o'aWo /V-fl mc- 27 
— L fr~ G E=~ N D 
jr rtOOA//> /fJVSrtr ni.es 
- *z/z.z. coAte*ere c?/tch 
- OfRT arret/ 
CULXASR’T — L El G E N P 
\ \ scale:: /* zoo'(Appro*.] 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY* 
MALARIA CONTROL 
GALETA SLAMD AREA 
OP PICS OP THE OCMlfTMEMT SUMMON APPROVED 
*eco/*t*ert40KD: 
im ** 
Jy fjgftii oem comm**d** 
rBO./V}** o'F'w'G nm MC-2S 
- - "11 " 
~ ROUND INVERT T/L.S CNTCN 
rULL CONCRETE DITCH 
O/RT PI TCH 
CUL VERT Recommended George W. Hamilton __ 
Captain, Sanitary Corps. 
Approved Wesley C. Cox 
Colonel, Medical Corps. 
APPROVED: 
Assistant Chief of Staff, G--4 
♦ 
Deputy Department Commander 
171 EXHIBIT B MaIaRIA CONTROL - DRAINAGE SURVEYS 
Supplementary Report Listing Projects 
Proposed for Construction During Fiscal 
Year 194-6 
December 1944 
1 malaria control - drainage surveys 
COROZAL - AREA No. 1 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
December 1944 MALARIA CONTROL 
DRAINAGE SURVEYS 
DECEMBER 1944 
Supplementary report on Corozal (Area No, 1 ) listing 
work proposed for construction during the Fiscal Year 1946. 
Reference Maps M.C. 1 and M.C. 2. Preliminary estimated cost: 
Army Property $>8600; Panama Canal Property $6800; Total Cost 
#15,400. 
1. Pave invert and side slopes of Ditch 3 from Canal 
to junction with Ditch 3-A. Install 36" culvert under railroad 
spur near Canal bank (Part Panama Canal Property). 
2. Pave invert and side slopes of Ditch 10 from 
4.21 x 5’ culvert under railroad spur to 4.2' x 4f culvert under 
main P.R. culvert at junction with Ditch 10-C (Panama Canal Prop- 
erty) . 
3. Pave side slopes of Ditch 10 from junction with 
Ditch 10-C to 4.5' x 41 culvert under Gaillard Highway. (Panama 
Canal Property). 
4. Pave side slopes of Ditch 10-D from junction with 
Ditch 10 to 6’ x 6' culvert under Gaillard Highway. (Panama 
Canal Property), 
5. Install 14n one-half round invert tile laid to 
maximum practicable grade in following Ditches (Panama Canal 
Property): 
a. Ditch 10-C from junction with Ditch 10 to 21M 
culvert at Gaillard Highway. 
b. Ditches 10-D-l and 10-D-2. 
c. Ditch 10-D-3 from junction with Ditch 10-D 
to 24" culvert at Gaillard Highway. 
5 L tr G E N D 
■£ ROUHD INVERT TILE DITCH 
FULL CONCRETE DITCH 
DIRT DITCH 
CULVERT 
NOTE: Notations in circles to subdivisions 
of section 4 of accompanying report 
SCALE: /-1400 
WAR department 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
COROZAL, C.Z. 
irnct of the oe.PT. surgeon APPROVED 
RECormiNOEDASST. CHIEF STAFF Q-4. 
cam., San. corps 
APPROVED DEPOTr 0EPT' COMMANDER 
°• cSVpS 
JUNE_ 7943 DRVsd V*rrc-1 — L E Gr £ N P ' 
£ ROUAIO INVERT TILE DITCH 
NULL CONCRETE O! TCH 
DIRT DITCH 
CULVERT 
TILE DITCH 
NOTE'- Notations in circles id Subdivisions 
of Section 4 of accompanying report 
SCALE- Appro*. /■'2400 
WAR NT 
PAN AM A CANAL DEPARTMENT 
DRAINAGE SURVEY 
malaria control 
COROZAL C.Z. 
OFFICE or TH£ DEPT. SURGTOH APPROVED 
At ST. Cult F STAFF 
CRPr.. 5An CORPS 
approved deputy pcpt cormander 
■ COL, Mjjacows 
JUNE /943 DKVsG AN PfC-Z 
H8 15669 Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Corps 
7 MALARIA CONTROL - DRalLAGE SURVEYS 
CQROZAL CEMETERY - aREA NO. 2 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
, December 1944- 
9 MALARIA CONTROL 
DRAINAGE SURVEYS 
December 19A4 
Supplementary report on Corozal Cemetery(Area No. 2 ), 
listing work proposed for construction during the Fiscal Year 
194-6. Reference Map M.C. 3. Preliminary Estimated Cost |10,800. 
all work on Panama Canal Property. 
1. Pave side slopes of Ditch 10 from Gaillard Highway 
to junction with Ditch 10-G (Panama Canal Property). 
2. Install 14M one-half round invert tile laid to 
maximum practicable grade in following ditches (Panama Canal 
Property); 
a. Ditches 10-D and 10-D-3 from Gaillard Highway 
to a point 50 feet upstream from culvert under Gaillard Highway. 
b. Ditch 10 from a point about 600 feet upstream 
from junction with Ditch 10-J to a point $0 feet upstream from the 
36” culvert under Corozal Clayton Road. 
c. Ditch 10-J from junction with Ditch 10-J-4- 
to a point 1500 feet upstream from this junction. 
d. Ditch 10-J-4- from junction with Ditch 10-J 
to 18” culvert under Old Empire Road, 
e. Ditch 10-L from 24.” culvert under Corozal- 
Clayton Road to a point 600 ft. upstream from this culvert. 
f. Ditch 10—C—1 from 21M culvert under Gaillard 
Highway to a point 200 ft, upstream from this culvert, 
£. Ditch 5-R-l-B from 20" culvert under Corozal- 
Clayton Road to a point 700 ft. upstream from this culvert. 
11 NOTE: A/OTATIONS /A! REC TA AIGl ES I Re FI R TO 
SUB-DIVISIONS OF section s IF AcciutPaNYINS report 
see su.nc.z for continuation of all ok aims this sm 
Scale; ( «200' 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
LEGEND 
ROUND INVERT TILE 
full conc. 
dirt 
DRAINAGE GURYEV 
MALARIA CONTROL 
CQROZAL CEMETERY & VICINITY 
OFFICE OF THE PE FT. SURGEON APPROVED 
RECOMMEND tDjJkwjO' 
cafEsan. uah ASST. CHIEF STAFF 6-A _ 
APFRoVED 
COL . 1TF0. CORPS OCftfTY DEFT. CONMANOER 
JULY 1943 DRWG NO, M.C, 3 
CULVt-RJ 
RECOMMENO*J)_ 
cap7. Co*P5 Op CNJINEfR* Recommended George Hg. Hamilton 
Major, Sanitary Corps 
* 
Approved ?tesley C, Cox 
Colonel, Medical Corps MALARIA CONTROL - DRAINAGE SURVEYS 
aLBROOK FIELD - AEEa No. 3 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
December 19A4- 
15 MALARIA CONTROL 
DRalNaGE SURVEYS 
DECEMBER 194A 
Supplementary report on Albrook Field (Area No. 3) 
listing work proposed for construction during the Fiscal Year 
194-6. Reference Maps M.C. M.C. 5, and M.C. 6. Preliminary 
Estimated Cost #10,300. All work on array Property. 
1. Pave invert and side slopes of Ditch 11-L from 
junction with Ditch 11-L-ll to a point 1000 ft, upstream from 
this junction, 
2. Complete filling, regrading and draining areas 
in former revetment areas and other areas adjacent to runways 
and taxi strips. 
17 Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Corps 
19 SCALE.-AFf,tv V: 24oo 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage survey 
MALARIA CONTROL 
ALBROOK, C. Z. 
office of ths otpr. suRaeos APPROVED 
nZCOMMEHOrD tU l4a*nJbOn 
CjUt. SAN. CeUPj ASST CHIEF STAFF S-4 , 
APPROVED DEPUTY DEPT. COMMANDER 
col. ME®, cones 
AUGUST /S-43 DPtW/'G A/O W-C j 
NOTE: Notations m circles thus (prefer -to Subdivisions 
of section 6 of accompanying report 
L E G E- N V — 
f ROCS A/O /AJVSRt ~r/LE O/TCA/ 
SUIL CON C J)elf D/TCH 
D/RT- p/TCAJ 
CUiV'SRT NOTE. '- No-taions m circles ihusJ -to subdivisions' 
of stcfion 6 of accompanying report" 
SCALE: - Appro*. / -24oo 
WAR DEPARTMENT 
PANAM A CANAL DC PARTMCNT 
drainage survey 
malaria control 
albrook, c. z. 
of net or the oeptsorseom APPROVED 
• CApr SAN'eoRPf ASST. CHIEF VAFr S-4 
approved t>ePi/rr dept, commander 
COL. MED CORPS 
AUGUST /9-fJ PRa/G A/O- AAC-S" 
L E- G £■ N D 
/ roua/o /A/rcr?T th£ p/tca./ 
run coA'cRrrr p/tca* 
n//=fT o/ro/-r 
cuL\yrr?r L E: G E M D - 
£ ZHOU/VO /r/VeffT T/LS o/rcn 
pluil c oa/cp?£ t e~ o/rcn 
O/RT O/rC/T 
Ci/i. VS£V? r 
SCALE: Approx /: Z4-00 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: .survey 
MALARIA CONTROL 
ALBRQOK, C. Z. 
OFFICE Of THE DEPT SURGEON! APPROVED 
RECOMMEND£B’f)*»m — 
"'caoCsan'corps’ asst chief: staff S4... - 
APPROVED DEPUTV PBPT. COMMANDER 
COL, MED CORPS 
AUGUST / 943 OAW'G /VO M-C - <S 
NOTE: Notations in circles thusi (prefer to subdivisions 
==_ of section & of dccompanyinq report MALARIA CONTROL - DRAINAGE SURVEYS 
Outlying Area along Albrook-Clayton 
Highway - Area No. 5 
Supplementary Report Listing Projects 
Proposed For Construction During Fiscal 
Year 194-6 
December 1944 
21 MALARIA CONTROL 
DRaINaGE SURVEYS 
DECEMBER 1944 
Supplementary report on Outlying Area along Albrook- 
Clayton Highway (area No. 5 ) listing work proposed for construction 
during the Fiscal Year 194-6, Reference Map M.C. 9. Preliminary 
Estimated Cost $80,700. All work on Army Property. 
1. Pave invert and side slopes of following ditches: 
a. Ditch 11-G from junction with Ditch ll-G-12 to 
a point 500 ft. upstream from junction with ll-G-16. 
b. Ditch 11-G from a point 100 ft, downstream 
from 6' x 6' culvert under Albrook Magazine road to a point 900 ft,, 
upstream from this culvert. 
cc. Ditch 11-L from junction with Ditch ll-L-12 
to a point 800 ft. upstream from junction with Ditch 11-L-14. 
d. Ditch A5-F from junction with Ditch 4-5 to 
junction with Ditch 45-F-10. 
e. Ditch 4-5-F-l from junction with Ditch 4-5-F to 
24" culvert under Albrook- Clayton Road. 
f. Ditch 45-K from fence around gasoline storage 
area to a point 1000 ft. upstream from this fence. 
g. Ditch 47 from Cardenas River to junction with 
Ditch 47-D. 
h. Ditch 47-A from junction with Ditch 47 to pipe 
line crossing. 
i. Ditch 47-D from junction with Ditch 47 to 33" 
culvert under Albrook-Clayton Road. 
Above ditches to be straightened where required to remove 
abrupt changes in direction and abandoned sections of channels to 
be backfilled to insure complete drainage. Adjacent banks to be 
regraded where required to drain to paved ditches. Inverts of 
ditches may be 14" or larger precast concrete tile or may be 
monolithic concrete slightly pitched to center. Side slopes may 
be precast or monolithic concrete provided with frequent weep holes 
where required. 
2. Install 14” one-half round invert tile laid to 
maximum practicable grades in the following ditches: 
23 a. Bitches ll-L-12 and 11-L-12-A. 
b. Ditches 45-P, 45-<4, 45-T and 45-T-l. 
c. Ditches tributary to Ditch 45-F-l for section 
between junction of Ditch 45-F-l with Ditch 45-F and 24" culvert 
under Clayton-Albrook Road. 
d. Ditches 45-F-2, 45-F-3. 45-F-4, 45-F-5, 
45-F-6, 45-F-7, 45-F-B and 45-F-7-A. 
e. Ditch 47 from junction with Ditch 47-D to 24" 
culvert under Clayton-Albrook Road, 
f. Ditches 47-B and 47-C. 
g. Ditch 47-A-l. 
h. Ditch 47-a upstream from pipe line crossing, 
i. Ditch 45-A from junction with Ditch 45 to junction 
with Ditch 45-A-2, 
2. Ditch 45-A-l. 
24 NOTE- potations in circles thus (£*)refer to subdivisions 
Of section 6 of accompanying report 
LEGEND — 
/ &OU/VD /Wf/Rr T//-E D/TCH 
eull coaca-£T£- o/tcas 
D/AfT O/TCAf 
! - „,=i CUE V£T/=ir 
scale: AqpireK /:sooo 
WAR DEPARTMENT 
PANAMA CANAL 
drainage: survey 
MALARIA CONTROL 
OUTLYING AREA ALONG 
ALBROOK-CLAYTON Ml way 
OFFICE- OF THE PCPT SURGEON I APPROVE-D 
/=?£:C:OASM^A/£}£r/D: ! TT 
A3ST CH/trrarArr <?-* 
AF-P/=(ov'£-oCAPr c"Wj comaia/voch. 
col~ j 
AUGUST /9 43 | OlRW'G /VO MC.-S 
— [ 
O/tAH/'/VGS & r : 
ea/g//vse/=»a/s sect/o/v, aie.o. j 
By: 3</SM/rreo e>y: 
__] CAP T. C. E. I Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C« Cox 
Colonel, Medical Corps 
25 MALaRIa CONTROL - DRAINAGE SURVEYS 
FT. KQBBEE - AREA NO. 6. 
Supplementary Report Listing Projects 
Proposed For Construction*During 
Fiscal Year 194-6 
December 19A4- 
27 malaria control 
drainage surveys 
DECEMBER 1944- 
Supplementary report on Ft. Kobbe-Howard Field (Area 
NOo 6 ) listing work proposed for construction during the Fiscal 
Year 194-6. Reference Maps M.C. 10, M.C. 11, M.C. 12 and M.G. 13. 
Preliminary Estimated Cost $101,500, All work on Army Property, 
1. Pave invert and side slopes of following Ditches; 
a. Ditch 50-B from a point 4-00 ft. upstream from 
junction with Ditch 50 to a point 200 ft. downstream from 2- 36” 
culverts under taxiway, 
b. Ditch 50-C from junction with Ditch 50-C-2 to 
point of existing paved section 100 ft. downstream from Howard 
Ave. 
i 
c. Ditch 50-B from junction with Ditch 50-B-ll to 
end of ditch near runway cross-over. 
d. Ditch 51 from junction with Ditch 51~F to 
junction with Ditch 51-R. 
e. Ditch 51-F from junction with Ditch 51 to a 
point 600 ft. upstream from junction with Ditch 51-F-8, 
f. Ditch 50-B-ll from junction with Ditch 50-B 
to end of ditch, 
g. Ditch 51-F-4--D from 30” culvert at junction 
with Ditch 51-F-4- to end. Include new 24.” culvert under taxiway 
between East and West strips of runway. 
h. Ditch 51- A from 36" culvert under runway to 
end of ditch, 
i. Ditch 51-C-2-B from 36" culvert under runway to 
end of ditch. 
j. Ditch 200 from a point 100 ft. downstream from 
culvert under taxiway to end of ditch. 
k. Ditch 51-X from junction with Ditch 51 to end 
of Ditch. 
29 2. Install L4n one-half round invert tile laid to maxi- 
mum practicable grade in following Ditches! 
&* Ditch 51-H from junction with Ditch 51 to junction 
with Ditch 51-H-l. 
b. Ditch 51-H-l from junction with Ditch 51-H to 
a point 200 ft. upstream from this junction. 
c. Ditches 51-N, 51-P and 51-Q. 
d. Ditch 51 -F-4 from junction with 51-F-4-D to end, 
e. Ditch 51-F-5 from IB” culvert at junction with 
Ditch 51-F-5-E to end. 
f. Ditch 51-F-5-A from 15” culvert at junction with 
Ditch 51-F-5-A-1 to next 12" culvert. 
j2« Ditch 51-F-7 from 24.” culvert at junction with 
Ditch 51-F-7-D to a point 500 ft. upstream from this junction. 
h® Ditch 5B-C from junction with Ditch 5B to a 
point approximately 1000 ft. upstream from this junction, 
i. Ditch 51-F-7-B from junction with Ditch 51-F-7 
to a point 400 ft. upstream from this junction. 
2* Ditch 51-F-7-E from junction with Ditch 51-F-7 
to a point 800 ft. upstream from this junction, 
k. Ditches 59-a.I, 58-M, 51-H and 200-A. 
3. Fill as required and regrade to definite drainage ditches 
the following areas: 
a. Area between Ditch 50-B-ll and upper section of 
Ditch Bo 
b. Area on each side of upper section of Ditch 
51-F-4-D. 
c. Area on each side of upper section of Ditch. 
51-Ao 
d. Area on each side of upper section of Ditch 
51-C-2-B. ~ * 
e. Area on each side of upper section of Ditch 
51-X. 
f. Area on each side of Ditch 200, 
30 4-. Install system of one-half round invert tile road- 
side ditches and culverts and roof drains where required in low 
cost housing area. Complete filling and regrading to these drains. 
31 SCA\££7: Approx. /■ £400 APPRO* 
war department 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
HOWARD FIELD, C.Z.. 
OFFICE Of THE- oe.PT. SUK6EON APPROVED 
Assr.cH/ersrArr 64 
approffiPfW. D£^ory' tx'ar c°*'*’*"a** 
coin’s ' — 
Af/6t/9r J+s **1IUl3 A/O. A1.C.-IO 
— . — _——— ■ UTTyTfl 
~ L Er G Er N O — 
- -jf HOC//VO //VV£PT T//.P D/TCH 
_ /-d/Z O/TCH 
o/ffT D/rc/a 
3 cc'l\s£:f?t 
NOTE: Notations in circles thus (£f/refer to subdivisions 
oi section g of accompanying report. NOTE' Notations in circles thus (*fre fer to subdivisions 
of section 9 Of accompanying report. ; 
LEGEND — 
2 nOl/A/D //VL'EFfT T/LS O/TC/1 
PUL L CO/VCF/S T£T O/ TCAf 
O/Ft T D/TCfY 
CUL \S£Ft T 
SCACPT /"* 200' APPRox. 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE survey 
MALARIA CONTROL 
HOWARD FIELD, C.Z. 
osF/ce of th* o£pt ■sonOcon/ APPROVED 
/=tECOAJMEASO£D , , 
id-, cyprii&n />ssr- ewer -staff Gt. 
APPffovfD /ft iP*J$ ocF'ory def>t comwp/vdeh 
c otldib'fcoFPS ' — , 
SerP’T- / 9 4-3 OFfWG /V-“ 'AY. Cr H NOTE- Notations in circles thus ® refer to subdivisions 
p'f section 3 of accompanying report 
• L 'E- G & N P 
Z FtOUA/P //VVTF9T T/L £ O/TC/i 
FOIL COAfCA?£T£ D/TCTi 
O/FfT D/TC/T 
CUL V£FTr 
SCAU.C: /"= ZOO' APPROX. 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage survey 
MALARIA CONTROL 
HOWARD FIELD, C. Z. 
orr/cc or the: dfpt surgco/v APPROVED 
ftrca/HMer/vDED , 
ZUW&lAJ ASST CHf£F STArF 64 
C/fPT SAN- COATS 
£> D£F>urr £>£F=T. COA1MA/VD£/=< 
IMfaconps'‘< 
SETPT /943 OFTvs'G- fv* M c~ /Z L E- G £ Nl D ' 
T POU/VO /NVSPT ~r/L S O/TCAi 
PULL CO/VCPSTS D/TCFf 
D/RT O/7-CP 
CUL US Pi T 
5 cpl S /"* 200' APPROX 
WAR department 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
HOWARD FIELD, C.Z. 
orr/c£ op me oept suppeon APPROVED 
RccoAf/vE/voeo ,, ... 
NllAqa. tu. ASST. CP/£F STAFF 0-4- 
ctR RT. SAN. corps. ' 
APPROVE Op , _ oePC/TY DC P‘7: COAfASA fVDETPt 
cot., prep /corps' 
AUGUST /9A3 O'Pf'w'G /V* M.C.-/3 
VSUr/Tf 
NOTE: Notations in circles thus refer to subdivisions 
of section 9 of accompanying report Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Corps 
33 OUTLYING aKEa - VICINITY FT. CLAYTON 
aREa NO. IQ 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
December 1944 
35 MALARIA CONTROL 
DRAINAGE SURVEYS 
DECEMBER 1944- 
Supplementary report on Outlying Area- Vicinity of Ft. 
Clayton (Area No. 10) listing work proposed for construction dur- 
ing the Fiscal Year 194-6. Reference Map M.C. 17. Preliminary 
Estimated Cost |6300. All work on Array Property, 
1. Pave invert and side slopes of Ditch 80 from 36” 
culvert under Gaillard Highway to junction with Ditch 80-L. 
2. Pave invert and side slopes of Ditch 80-K from 
junction with Ditch 80 to 18U culvert at junction with Ditch 
80-K-2, 
3. Install 14-11 one-half round invert tile in follow- 
ing Ditches: 
a. Ditch 80-E from junction with Ditch 80 to 10'1 
culvert under road to Gun Position. 
b. Ditches 80-F, 80-G, 80-H and 80-J. 
c. Ditch 80 from junction with Ditch 80-L to a 
point 200 ft. upstream from junction with Ditch 80-N. 
* / 
d. Ditch 80-L from junction with Ditch 80 to 
18n culvert under road. 
e. Ditch 80-K-l from junction with Ditch 80-K 
to l8n culvert under road. 
f. Ditch 4-2-0* 
37 - I_ B G E N D — 
y FfOUJVD AA/VfRT r/JLC O/TCAV 
ruc-t- co/vcrr£r£ o/rcrv 
o/etr ditch 
col v£-fn~ 
SCALC: /"? 2OO’ APPROK. 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
OUTLYING ARLA-VICINITY OF FT CLAYTON 
arr/cr or rue otpr sunem APPROVED 
J?f CO»i«<fND tDgCHIIF fTAfF 0-4 
««»T. SAJI. 
Arpt% °^r . jc&lj/ OtnuTY COMnAHDtH 
C*L. drQ CHIP) 
AVOW. /943 /v» me- /7 
NOTE: /foie f ion S in circles -thus refer io subdivisions 
of section /3 of ecco/npenying report Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Corps 
39 MALARIA CONTROL - DRAINAGE SURVEYS 
FT. DAVIS - AREA NO. 11 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
December 1944- 
41 MaLaRIA CONTROL 
DRAINAGE SURVEYS 
DECEMBER 1944- 
Supplementary report on Ft. Davis (Area No. 11), listing 
work proposed for construction during the Fiscal Year 194-6„ 
Reference Maps M.C. 18 and M.G. 19. Preliminary Estimated Costs 
Work on Army Property $37,300j work on Panama Canal Property $8,000 
Total Cost $4-5,300. 
1. Pave invert and side slopes of following Ditchess 
Ditch 96 from Naval Radio Station fence line 
near junction with Ditch 96-J to 71 x 15' culvert at junction 
with Ditch 96-Q. 
b. Ditch 96 from junction with Ditch 96-R to a 
point 600 ft, upstream from this junction. 
c. Ditch 96-R from junction with Ditch 96 to a 
point 600 ft. upstream from this junction. 
d. Ditch 97 from junction with Ditch 97-V to 
7’ x 91 culvert under relocated Panama Railroad near junction 
with Ditch 97-X, 
e. Ditch 97 from 8’ x culvert under relocat- 
ed Panama Railroad |ust upstream from junction with Ditch 97-BB 
to junction with Ditch 97-JJ. 
f. Ditch 97 from 7'1 x 9' culvert under relocated 
Panama Railroad to 8' x 7J-1 culvert under relocated Panama Railroad 
(Panama Canal Property). 
g. Ditch 97-F-14- from a point 200 ft. upstream 
from junction with Ditch 97-F-I4--C to a point 1000 ft. upstream 
from this junction, 
2. Install 14-” one-half round invert tile laid to 
maximum practicable grade in following Ditches: 
a. Ditch 97-CC from junction with Ditch,97 to 
a point 300 ft. upstream from this junctioh. 
b. Ditch 97-DD from junction with Ditch 97 to 
a point 4-00 ft. upstream from this junction. 
c. Ditches 97-EE, 97-FF and 97-HH from junction 
with Ditch 97 to culverts under relocated Panama Railroad. 
43 d. Ditch 97-GG from junction with Ditch 97 to a 
point 500 ft, upstream from this junction. 
e. Ditch 97-Y (Panama Canal Property). 
f. Ditch 97-BB from junction with Ditch 97 to 
36" culvert under relocated Panama Railroad. ( Panama Canal Prop- 
erty) . 
44 — LEGEND 
NOTE: Natations in circles thus fey refer -fo subdivisions 
of section /4 of accompanying report. 
SCALE: /“* 200' ('A/m j 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
FORT DAVIS, C.Z. 
office or in* p6pt. suqacoM APPROVED 
/?£ CohmCndco sQoyyM Hartal 
c»»r. ‘/f)"’4 asst ernes antes ••+ 
' or„^r OMrrr cmma,",** 
AfOVS, '9*3 P/RW 'O /VS MC - f Cf 
— ' — T9- frrr —-1 
Y troo/vo /nvtw t/l.er orren 
El/LL COA/CPi17 £ PITCH 
P//RT D/TCH 
CUL V£P T SCALE: /"= ZOO' fApf,ro*.) 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FORT DAVIS , C. Z. 
office of the depfsupgeoh APPRdIVED 
asst, cmer staff g--» 
af*f>ipo vfo of Fury oser, co«^wi-« 
J 
NOW.. /94S oRWb /v-e NC-ffi 
J 
"—‘—— -V3r'«Tg;— 
LEGEND — 
£ Ftausvo //vvfft tuf hitch 
- FULL COHC/=fFF£- DITCH 
— o/f?r o/fch 
CUL V£~FiT 
NOTE, Notations m circles thus ’'refer to subdivisions 
of section Af o/' accompanyinq report. Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Corps 
45 MaLaRIa CONTROL - DRAINAGE subveils 
FT. GULICK - AREA No. 13 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
December 1944 
47 Malaria control 
drainage surveys 
DECEMBER 19A4- 
Supplementary report on Ft. Gulick (Area No. 13), list 
ing work proposed for construction during the Fiscal Year 194-6. 
Reference Maps M.C, 21 and M.C. 22. Preliminary Estimated Costs 
Army Property $4-5,4-00; Panama Canal Property |28,000; Total Cost 
$73,4-00. 
1. Pave invert and side slopes of following Ditches: 
a. Ditch 11$ from Panama Canal property line 
(near junction with Ditch 11$-K) to junction with Ditch 11$-X. 
b. Ditch 11$-J from Panama Canal property line 
(near junction with ll$-J-2) to junction with 115-J-4-* 
c. Ditch 11$-M from Ditch 11$ to junction with 
Ditch ll$-M-4-. 
d. Ditch 115-M-l from junction with Ditch 11$-M 
to junction with Ditch 11$-M-1-A. * 
e. Ditch 11$-N from junction with Ditch 11$ to 
culvert under Gulick-France Field Road. 
f. Ditch 115-V from junction with Ditch 11$ to 
existing paved section along Gulick access read. 
g. Ditch 116-Q from junction with Ditch 116 to 
18” culvert under highway. 
H. Ditch 11$-C from junction with Ditch 11$ to 
junction with Ditch ll$-C-3 (Panama Canal Property), 
i. Ditch 11$-D from junction with Ditch 11$ to 
junction with Ditch 115-D-l (Panama Canal Property). 
j. Ditch 11$-F from junction with Ditch 11$ to 
junction with ll$-F-2 (Panama Canal Property). 
k. Ditch 11$-L from junction with Ditch 11$ to 
Army-Panama Canal property line (Panama Canal Property). 
I. Ditch 11$-J from junction with Ditch 11$ to 
Army-Panama Canal property "line (Panama Canal Property). 
49 2. Install U" one-half round invert tile laid to 
maximum practicable grade in following Ditches; 
• a. Ditches 115-J-2, 115-J-3 and 115-J-4. 
b. Ditch 115-M-l from junction with Ditch 
115-M-l-A to end, 
c. Ditches 115-M-l-A, 115-M-l-B, 115-M-2, 
115-M-2-A, 115-M-3 and 115-M-A. 
d. Ditch 115-M from junction with Ditch 115-M-A 
to end. 
e. Ditch 115-P from junction with Ditch 115 to 
a point 150 ft. upstream from this junction. 
f. Ditches 115-Q, 115-R, 115-3, 115-U, 115-W, 
115-U-l, 115-U-2, 115-W-l and 115-X. 
g. Ditches 116-AA and 116-S. 
ho Ditch 116-R from junction with Ditch 116-R-l 
to end. 
i. Ditches 117 and 118. 
JN Ditch 115-B from junction with Ditch 115 to 
junction with Ditch 115-B-l (Panama Canal Property). 
k. Ditch 115-D from junction with Ditch 115-D-l 
to end (Panama Canal Property). 
l. Ditches 115-D-l, and 115-C-2 (Panama 
Canal Property), 
m. Ditches 115-E, 115-F-l and 115-F-2 (Panama 
Canal Property). 
n. Ditches 115-G and 115-G-l (Panama Canal 
Property). 
o. Ditches 115-H and 115-H-l-A (Panama Canal 
Property)0 
£. Ditch 115-H-l from junction with Ditch 115-H 
to a point 50 feet upstream from junction with Ditch 115-H-l-A 
(Panama Canal Property). 
go Ditch 115-F upstream from junction with Ditch 
115-F-2 (Panama Canal Prop). 
r. Ditch 115-K (Panama Canal Property). • 
50 s. Ditch 115-1 from junction with Ditch 115 to 
end (Panama Canal Property). 
t. Ditch 115-Z from junction with Ditch 115 to 
end (Panama Canal Property). 
u. Ditch 115-AA from junction with Ditch 115 to 
a point 500 ft. upstream from this junction (Panama Canal Property) 
3. Pave side slopes of Ditch 115-A from junction with 
Ditch 115 to 30” culvert near junction with Ditch 115-A-5. 
Remove or reset 24" culvert at Navy pipe line crossing (Panama 
Canal Property). 
51 -LEGEND 
/=fOC/ND /A-l/f/fT r/L£ O/TCH 
rOLL CONCRETE D/TCN 
D/RT O/TCR 
CUC VERT 
NOTE■ Notations in circles thus.(fyrefe-r to subdivisions 
of section /g of accompanying report. 
3CAC£ : /“*200' fApjorox.) 
WAR DEPARTMENT 
panama canal, department 
drainage SURVEY 
MALARIA CONTROL 
FORT GULICK, C.Z. 
OFMCC Of THC PgPT. SUtKGEOH APPROVE!* 
*£C0Mf*£A/O£0 
A5sr ***** *TAjer 
A'’”'ov‘ty 
CISC., \ij4j DR'wb NS MC-ZI WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL. 
FORT GUUCK, C.Z. 
OPPICI. op TH« Qg.p-AirrM«NT surges* APPROVED 
/=K£.CO**f*l£ffOrD 
Assr cwrr st*** o-s- 
/T) DE*>OTT 0**T 
“goVVlr~ 
f D'R'w'o /VO AftC-ZZ. 
■' L. E G E/rvi D 
mOUMO INVBfKT TIL. C OtrCH 
- rOLL COMCHKTK DITCH 
_ o/mr d/tch 
cut VfMT 
NOTE: Notations m circles fhus(§z) refer to subdivisions 
of section 1C of accompanying report 
/A/S£TT Recommended George W. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
ColSnel, Medical Corps 
53 MaLaRIA CONTROL - DRAINAGE surveys 
FRANCE FIELD - AREA NO. U 
Supplementary Report Listing Property 
Proposed For Construction During 
Fiscal Year 194-6 
December 194-4- 
55 MALARIA CONTROL 
DRAINAGE SURVEYS 
DECEMBER 1944 
Supplementary report on France Field (Area No* 14), 
listing work proposed for construction during the Fiscal Year 
1946. Reference Maps M.C. 23, M.C. 24, M.C. 25 and M.C. 26. 
Preliminary Estimated Cost &2S,600. All work on army Property. 
1, Pave invert and side slopes of following Ditches: 
a. Ditch 134 from inlet to 60H culvert near 
junction with Ditch 134-D to junction with Ditch 134-E. 
b. Ditch 134-E from junction with Ditch 134 to 
24” culvert under By-Pass Road* 
c. Ditch 132-A from junction with Ditch 134 to 
24” culvert under taxiway, 
♦ d. Ditch 131 from junction with Coco Solo River 
to 24” culvert under runway* 
2* Install 14” one-half round invert tile in follow- 
ing Ditches: 
a. In ditches tributary to Ditch 123 for section 
between junctions of this Ditch with Ditch 123-P and 123-Q. 
b. Ditches 123-S-l and 123-S to Panama Canal 
Property Line. 
c. Ditches 122-J-2, 122-J-3, 122-J-3-A, 122-M, 
122-Ny 122-P-2, 122-S and 122-T. 
d. Ditch 127-B-l-A. 
e. Ditch 122-D from junction with Ditch 122-D-3 
to junction with Ditch 122-D-9. 
f. Ditch 123-M-l. 
g. Ditch 122-D-12. 
57 L E G E N D ~ 
/ Ftous/o /AJVEAT tile ditch 
FULL COHCH ETE O/TCH 
D/fRT a / TCM 
CUL \S£FT 
NOTE: Notations in circles thus &),refer to subdivisions 
of Section U of accompanying report. 
scale:: Z.OO'fApprox.) 
WAR DEPARTMENT 
panama canal department 
drainage: survey 
MALARIA CONTROL 
(OLD) FRANCE FIELD, C. Z. 
OFFICE OP TMe pgPAffTMtMT SUflfttOH .AlPJPROVE/D 
nec oM/s>e~ npe o : 
ASSr •w* o~+ ~ 
sah. conr-s 
/kRr/foveprf/i i o ft) d) oerorv comma A/oem 
~ e 
DEC... /J4-J D'fFvvd a/j> PfC-2.3 NOTE: Notations in circles thus(f^refer to subdivisions 
of section /? of accompanying repor t 
SCAL £T: /' 200' (*r/0rax. j 
~ L E G Er N D ~ 
WA R DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
(new) FRANCE FIELD, C,2. 
office of th g pcpt suHoeou 
ftmfttijLUj AS*T. srA/rr o-+ 
/> Ip OJ*. oeAory oerr. contM/woe* 
-. 
Dec.., lyk\j D'A'w'a Af* AfC 
J ***7Tf* ■ 
£ aooa/o /NV£f*T r/ce orrcrt 
CoA/CPE r£ 0/7~CA/ 
D/rrr o/rc// 
cul \se/=>t MOTE: Notations in drc/es thusrefer to subdivisions 
of section !7 of accompanying report: 
SCAi./T: /“* ZOO' fApprox-j 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
FRANCE: FIELD, C. Z. 
prricc or rnt guneto* ; AFFROVEB 
C OMME NDEO I 
U_ ASS7: ch"£r *TArr 6'* 
tXpT. A AN, COR rs 
APPROVED; \ , . fT) fJ A OF Pul Y OFm-. COMMANDER 
■'Vl/£jus -L- c&L 
CO.-,, ~1 »joT »n»a ~i —_ 
v'AA/v Ijtyy- I O'R'Wa a/* WC-25 
- LEGEND '— 
j /=?Oi/A/£> ffijy £ FT~T 'TIL E OITCN 
rvLc. coa/chete: ditch 
0//?T DITCH 
CULVERT NOTE/. Notations in circles fhus(Py refer to subdivisions 
of section /7 of dccotnpartying report 
" L. E. G E N D 
• — ROUND !M VCR 7 T1LD DITCH 
• full conch ere ditch 
- xv*r */rv* 
CULVKHT 
<5CAl£'-‘ /'*200' (Afipro*.) 
WAR DEPARTMENT 
PANAMA CANAL. DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
FRANCE. FIELD, C.Z. 
™* approved 
R6COM*',£HDCD; 
Jflttri-j, Oj JJf. ' ASST- c"'e* staff a-if- 
TMrrJBr- 
approved0* (h iLLn. D£f*orr dspt. commanded 
— jPII} 
FEB., D'R'w'O Ni MC-26 
Jv Recommended George W„ Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox _ 
Golonel, Medical Corps 
59 malaria control - drainage surveys 
FT. SHERMaN - area NO. 18 
Supplementary Report Listing Projects 
Proposed For Construction During 
Fiscal Year 194-6 
December 1944 
61 MALARIA CONTROL 
DRAINAGE SURVEYS 
DECEMBER 1944 
Supplementary report on Ft, Sherman (Area No. 18) list- 
ing work proposed for construction during the Fiscal Year 194-6, 
Reference Maps M.C. 33 and M.C. 34-. Preliminary Estimated Cost 
$27,500. All work on Army Property, 
1. Pave invert and side slopes of following Ditches: 
a. Ditch 155 from junction with Ditch 155-D to 
junction with Ditch 155-Go t 
b. Ditch 15S-G from junction with Ditch 158 to 
junction with Ditch 158-G-4-. 
c. Ditch 155-F from junction with Ditch 155 to 
end, 
2. Pave side slopes of following Ditches whose inverts 
are already paved; 
a. Ditch 155 from a point 100 ft, downstream from 
junction with Ditch 155-C to junction with Ditch 155-D, 
b. Ditch 155-C, 
3. Install 14.” one-half round invert tile in follow- 
ing Ditches: 
a. Ditch 152 from a point 200 ft. from outlet 
point to culvert under road, 
b. Ditches 155-D, 155-E and 155-G, 
c. Ditch 159 for the 500 ft. unpaved section 
between existing lower and upper paved sections, 
d. Ditch 160-M for the 500 ft, unpaved upper 
section, 
e. Ditch 160-C from junction with Ditch 160-C-3 
to end. 
ft 
f. Ditch 160-X from upper end to a point of 
definite outlet, 
g. Uncompleted roof drain outlets for New Barracks, 
63 h. Ditch 161-C from junction with Ditch 161-C-l 
to a point 200 ft. upstream from junction with Ditch 161-C-4. 
i. Ditches 161-C-4 and indicated tributaries. 
Ditch 160-F from junction with Ditch 160 to 
junction with Ditch 160-F-3. 
k0 Ditch 160-N-l for the 200 ft. unpaved upper 
section* 
l. Ditches 15S-G-1, 158-G-2, 158-G-4 and I58-G-5. 
m. Ditch 158-G from junction with Ditch 158-G-4 1 
to end. 
n. Ditches 158-G-3-A and 158-G-3-A-1. 
Co Ditches tributary to Ditch 158-G for section 
of this Ditch between junctions with Ditches 158-G-3 and 158-G-4* 
p. Ditch 155 upstream from junction with Ditch 
155-G. 
Uo Fill large excavation hole in rear of sewage pumping 
station serving the non-commissioned officers’ area* 
5 Fill numerous bell holes in newly constructed water 
main parallel to upper section of Ditch 164-Co 
6. Regrade, install inlet boxes and 14” one-half round 
invert tile in area in front of Dew Barracks, 
64 -LEGEND 
Scale /"-zoo' Approx. 
j rou/bo /htefkt tile ditch 
hull cohere te ditch 
D/RT DfTCH 
CULVERT 
WAR DEPARTMENT 
panama canal department 
drainage: survey 
malaria control 
FT. SHERMAN, C.Z. 
.g. *** AFPROVED~ 
***%£££&■. . **sr. cmrr sr*rr a-* 
rlAjoRi jan. corps 
APPPOVCO OEPOrr DEPT. COMP/INDEP 
cou~ RcoT COBPS 3,-^ 
MAT, dpr/G A/b a*c-3£ 
I 
NOTE' Notations jn circles fhu syyrefer to subdivisions 
of section 2/ of accompanying report. — LEGEND - 
rroc/A/o AvirgAcr- -rue. cmtch 
ri/ee coucAe~re otTcu 
cvrrr ofTCfv 
cuLvencr 
WAR DEPARTMENT 
PANAMA CANAL. DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FT- SHERMAN, C.Z., 
,r .... |» — — 
— APPROVED 
OJ. cnrr J<t-4 
rfAjoR San,"co(fpy"~ 
APWOVTO .* or*K/ry eXj~T. COMM4MOM 
CoI”mio7 "corps — 
—— — a 
MAY, 19W ORWO./va MC-34.' 
NOTE: Notations in circles thus\3refer to subdivisions 
of section 2/ of accompanying report. 
•Scale l"=ZOo' Approx. Recommended George I. Hamilton 
Major, Sanitary Corps 
Approved Wesley C. Cox 
Colonel, Medical Corps 
65 EXHIBIT C MALARIA CONTROL - DRAINAGE SURVEYS} 
Supplementary Report Listing Projects 
Proposed for Construction During Fiscal 
Year 194-5 
1 MALARIA CONTROL - DRAINAGE SURVEYS 
REVISED REPORT COVERING 
COROZAL - AREA NUMBER ONE 
3 MAURIA CONTROL 
DRAINAGE SURVEYS 
AUGUST 1944- 
Revised report on Corozal (Area Number One) listing work 
for inclusion in the $4.00,000 Malaria Control Project (F.Y, 194-5). 
Reference Maps M.C, 1, and M.C. 2, attached hereto. Preliminary 
estimated cost $10,000, 
1. Pave side slopes of Ditch 1 from junction with 
Ditch 1-N to junction with Ditch 1-Q. Height of side slopes to 
be 24- inches, 
2. Install £ round invert tile and 24- inch concrete 
side slopes in Ditch 7 from Panama Canal to junction with Ditch 
7-A. 
3. Straighten and pave invert and side slopes of 
Ditch 10 from Panama Canal to the 4-2x5’ culvert under railroad 
spur track. Remove 36" culvert at bank to Canal. Install new 
corrugated metal or concrete pipe culvert under road to dump yard. 
Connect Ditch 10-A to relocated Ditch 10 with \ round invert tile. 
Install i round invert tile in Ditch 10-A-l. Backfill abandoned 
section of channel to insure complete drainage. Install £ round 
invert tile along south toe of dump yard fill for 4-00 fe«t from 
Canal. • 
(Alternate for Item 3) Relocate Ditch 10 to its former 
location along south toe of dump yard fill and pave invert and side 
slopes from Canal to 4.2x5’ culvert under railroad spur track. 
Backfill existing channel for complete drainage. 
4. Pave side slopes of Ditch 5-L-ll from junction with 
Ditch 5-L to a point 300 feet upstream from junction. Side 
slopes to be 12" width concrete. 
3, Pave side slopes of Ditch 9-N from junction with 
Ditch 9 to end. Side slopes to be 12" width. 
6. Fill ruts, holes, etc., incident to construction 
of previous items. 
5 Recommended 
Major, Sanitary Corps 
Approved 
Colonel, Medical Corps ~ LEGEND 
rou/vd invert t/le ditch 
FULL CONCRETE D/TCH 
DIRT DITCH 
CULVERT 
NOTE.: Notations in circles Thus (prefer to subdivisions 
of section 4 of accompanying report 
SC*L£: A/prcK /:£400 
i 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
COROZAL, C.Z. 
I - - 
'Ofrice OF the dept APPROVED 
' ASST. CHIEF STAFF 6-4, 
; CART, San. Corps 
1 APPROVED £jSPP DEPUTY DEPT- COMMANDER 
co o-~com.es - 
JUNE 194-3 DRW’G /V*T4C-l 5 - L E GEND v- 
£ ROUND /NVERT T/LE U/TCH 
rull concrere o/tch 
O/RT O/TCH 
CULVERT 
T/LE D/TCH 
NOJE: Notations in circles, thus e2 refer to Subdivision 
OT jec r/or? or cjcco/npctnyjfig report 
SC/\L £"•* /•* £400 
war department 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
COROZAL C.Z. 
office, of the oePT. SvfjGeoNl APPROVED - 
1 
ASST CHIEF STAFF S-A-_ , 
APP Roved DEPUTY DEPT COMMANDER 
JUNE /94 3 D/RW6 V* riC S. MAURIa CONTROL - DRAINAGE SURVEYS 
REVISED REPORT COVERING 
ALBROOK FIELD - AREA NUMBER THREE 
9 MALAR La CONTROL 
DRAINAGE SURVEYS 
AUGUST 1944- 
Revised report on Albrook Field (Area Number Three) 
listing work for inclusion in the $4-00,000 Malaria Control Project 
(F.Y. 194-5). Reference Maps M.C. 4-, M.C. 5, and M.C. 6, attached 
hereto. Preliminary estimated cost $86,500. 
1. Pave invert and side slopes of following ditches; 
(a) Ditch 11 from a point 100 feet downstream from 
junction with Ditch 11-H to outlet of 12x7' culvert under north 
end of runway. 
(b) Ditch 11 from inlet to 12x7* culvert under 
north end of runway to a point 3501 downstream from 6x7’ culvert 
under highway near junction with Ditch 11-T. 
(c) Ditch 11 from inlet of 6x7' culvert under 
highway near junction with 11-T to 5x6’ culvert at junction with 
Ditch 11-Y. 
(d) Ditch 11-C from junction with Ditch 11 to 24-” 
culvert at junction with Ditch ll-C-5. 
(e) Ditch 11-G from a point 200 feet downstream 
from 39" culvert (located about 250 feet downstream from junction 
with Ditch ll-G-9) to junction with Ditch ll-G-12. 
(f) Ditch ll-G-10 from junction with Ditch 11-G 
to 24-" culvert at junction with Ditch 11-G-10-B. 
(g) Ditch 11-L from junction with Ditch ll-L-3 
to junction with Ditch 11-L-ll. 
(h) Ditch 11-P from junction with Ditch 11 to a 
point 50 feet upstream from junction with Ditch ll-P-2. 
(i) Ditch 11-Z from junction with Ditch 11 to 
4x4-1 culvert at junction with ll-Z-6. 
11 Above ditches to be straightened where required to 
remove abrupt changes in direction and abandoned sections of chan- 
nels to be backfilled to insure complete drainage. Adjacent 
banks to be regraded where required to drain to paved ditches. 
Inverts of ditches may be 14" or larger precast concrete tile 
or may be monolithic concrete slightly pitched to the center. 
Side slopes may be precast or momolithic concrete provided where 
required with frequent weepholes, 
2, Pave side slopes of following Ditches: (Existing 
inverts are paved.) 
(a) Ditch 11 from a point 350 feet downstream 
from 6x7' culvert under highway (near junction with Ditch 11-T) 
to outlet of this 6x7’ culvert, 
(b) Ditch 11-G from two 24" culverts at junction 
with ll-G-5 to a point 200 feet downstream from 39” culvert 
(located about 250 feet downstream from junction with Ditch ll-G-9). 
(c) Ditch ll-G-12 from junction with Ditch 11-G 
to 36” culvert at junction with Ditch 11-G-12-B. 
(d) Ditch 11-E from junction with Ditch 11 to 
junction with Ditch 11-E-l, 
(e) Ditch ll-Z-3 from junction with 11-Z to junc- 
tion with Ditch 11-Z-3-A. 
(f) Ditch 11-L from junction with Ditch to junction 
with ll-L-3. 
3. Establish uniform grade in and remove obstructions 
and debris from Ditch 11 from culvert (located about 200 feet 
upstream from junction with Ditch 11-G) to a point 100 feet down- 
stream with Ditch 11-H. 
A. Remove two 24” culverts in Ditch 11-G at junction 
with ll-G-5 which are now set 12” higher than incoming ditch 11-G. 
Replace with 48” diameter pipe properly graded to box culvert under 
ball diamond. If subsequent investigations indicate that these two 
24” culverts were purposely inserted to lessen flood hazards further 
downstream they may be lowered only instead of replacing with 48” 
diameter culvert. 
12 5. Fill area in triangle between Ditches 12-G and 
12-G-4. to the minimum depth required to drain it into a new 
i round invert tile ditch draining into Ditch 12-G-4 and ex 
tending to upper end of fill. Install 12M £ round invert 
tile through center. 
6. Regrade area In triangle between Ditches 11-G and 
ll-G-6. 
7. Complete minor regrading and filling jobs in the 
three former revetment areas, and other low spots i* 
areas, 
8. Install 14" g- round invert tile laid to maximum 
practicable grade in following Ditches: 
(a) Ditches ll-G-5 and tributaries. 
(b) Ditches 11-G-10-A from junction with Ditch 
ll-G-10 to junction with Diteh 11-G-10-A-1'Including the short 
tributaries to this section. 
(c) Ditch 11-G-10-A-1 from junction with Ditch 
11-G-10-A to culvert .under Albrook School road. 
\d) Ditches ll-G-20 and ll-G-21 including the part 
of their tributaries indicated on Map M.C. A. 
(e) Ditches 11-C-A, 11-H, 11-J, and 11-K, from 
main Ditches to first culverts in each of these laterals. 
(f) Ditches ll-L-3, ll-L-4, ll-L-5, ll-L-3, and 
ll-L-9, from junctions with 11-L to first culverts in °ach of 
these laterals, 
(g) Ditch 11-G-ll-A from junction with sewer 
11-G-ll to existing pipe outlet. 
9. Recondition end of Ditch ll-G-7 at junction with 
Ditch 11-G and at extreme upper end. 
10. Complete junction of Sewer 11-G-ll with Ditch 11-G 
and backfill over this sewer to insure complete drainage. 
11. Install £ round invert tile in Ditches 11-P-l, 
ll-P-2, and 11-P-2-A, with minimum fill on each side of these 
Ditches to drain adjacent areas to them. 
12. Fill ruts, holes, etc,, incident to construction 
of above items. 
13 Recommended _____ 
Major, Sanitary Corps 
Approved 
Colonel, Medical Corps 
15 SCAS-C-Approx- V- 2400 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE .SURVEY 
MALARIA CONTROL 
AL BROOK; c. Z. x 
off ICE or THE DEPT. SURGEON APPROVED 
CMlEf staFF 6 + 
APPROVED « DtPVTY D6PT COMMANDED — 
COL. M£P. CoRP.5 
AUGUST /?43 A/O. As)-C *b-2 
A/QT€: notations in circles thus $)refer to subdivisions 
of section <£ ot accompanying report. 
i_ e g e n d »— 
/ mvernr ru£ o/Tch 
Eot-t. c one/?ars o/ren 
ojfiir E>/rcn 
cucvjrxr NOTE•' Rotations tn circles to subdivisions 
of sec fion <5 of accompanying report. 
SCAif Appro*. /:2400 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
ALBRQOK, C Z. 
OFFICE OF THE PEPT. SURGEON/ a D 
Ul. — 
sa*~c;rps asst chief staff, s-4 
APPROVED DEPUTY DEPT. COPIMANOER 
COL. MEO. CO* P5 
sa 
AUGUST /913 DnW6 WO. A4C.~S 
L Er G E- N D - 
■2 ROUND SA/PS /?T T/IE p/TcfV 
RULL COWCNSTS D'TC/V 
D/R-r Dnc -V 
Cl/L L E: G e r-A O — 
J- ROC/Afa /HVERT TIL £~ DITCH 
race concrete' ditch 
DIRT O/TCH 
CUCVS-RT 
5CR/.£~. Appro*. /: Z400 
WAR DETPA RTM£^NT 
panama canal department 
drainage: survey 
MALARIA CONTROL 
ALB ROOK, C. Z. 
OFFICF OF the dept, suncron APPROVED 
HeCoMMENPf P Hi/tolU. 
' CAPjTFN. CORPf A5ST.CHIEF STAFF S + 
APP ROVED . _ PCPUTY OCPT. COMMANDeR 
COL MCP CORPS 
Ai/ce/sr / 9 + 3 OR'W'Q A/O. M C t<S 
NOTE' Notations in circles thus, refer to Oubc/i'vi slqns 
or section 6 of accompanying report ' MALARIA CONTROL - DRAINAGE SURVEYS 
REVISED REPORT COVERING 
QUILTING AREA ALONG CLAYTOH-AEBROOK HIGHWAY 
(AREA NUMBER FIVE) 
17 MALARIA CONTROL 
DRAINAGE SURVEYS 
aUGUST 1944 
Revised report on outlying area along Clayton-Albrook 
Highway (Area Number Five) listing work for inclusion in the 
&400,000 Malaria Control Project (F.Y. 194$), Chiva Chiva Signal 
Corps also included,, Reference Map M.C. 9, attached hereto. 
Preliminary estimated cost $41»2$0. 
1, Pave invert and side slopes of following Ditches; 
(a) Ditch 12-G-4 from two 36” culverts about 200 
feet downstream from junction with Ditch 12-G-4-G to a point 100 
feet, upstream from junction with 12-G-4-L. 
(b) Ditch 45 from 6x10,$' culvert at junction with 
Ditch 45-K to fence around gasoline storage area located about 400 
feet upstream from junction with Ditch 45-T, 
(c) Ditch 45-K from junction with Ditch 45 to fence 
around gasoline storage area. 
Above ditches to be straightened where required to re- 
move abrupt changes in direction and abandoned sections of chan- 
nels to be backfilled to insure complete drainage. Adjacent banks 
to be regraded where required to drain to paved ditches. Inverts 
of ditches may be 12” or larger precast concrete tile or may be 
monolithic concrete slightly pitched to center. Side slopes may be 
precast or monolithic concrete provided with frequent weepholes 
where required. 
2. Install 14” i round invert tile laid to maximum 
practicable grade in the following ditches: 
(a) Ditch ll-L-13 from junction with Ditch 11-L to 
the 24” culvert at junction with Ditch 11-L-13-A. 
(b) Ditch 11-L-13-A from junction with Ditch ll-L-13 
to a point 100 feet upstream from this point, 
(c) Ditch 11-L-13-B from junction with Ditch . 
ll-L-13 to the next two 24" culverts. 
(d) Ditch ll-L-14 from junction with Ditch 11-L to 
60” culvert at junction with Ditch 11-L-14-D 
(e) Ditch 12-G-4-C from junction with Ditch 12-G-4 
to next culvert under road. 
19 (f) Ditches 12-G-4-D and 12-G-4-E from junctions 
with Ditch 12-G-4 to end. 
(g) Ditch 12-G-4-D-2 from junction with Ditch 
12-G-4-D to end. 
(h) Ditch 12-G-4-F from junction with Ditch 12-G-4 
to a point 250 feet upstream from junction with Ditch 12-G-4-F-2. 
(i) Ditches 12-G-4-f-l, 12-G-4-F-1-A, and 
12-G-4-F-1-B. 
(j) Ditch 12-G-4-F-2 from junction with Ditch 
12-G-4*F to a point 300 feet upstream from this junction. 
(k) Ditch 12-G-4-G from junction with Ditch 12-G-4 
to a point 700 feet upstream from this junction, 
(l) Ditches 12-G-4-H, 12-G-4-J, and 12-G-4-L. 
(m) Ditch 45-H from junction with Ditch 45 to a 
point 700 feet upstream from two 24” culverts under Clayton-Albrook 
Highway. 
(n) Ditches 45-H-l and 45-H-2 from junction with 
Ditch 45-H to culverts under Clayton-Albrook Highway. 
(o) Ditch 45-H-3 from junction with Ditch 45-H to 
a point 250 feet upstream from this junction. Include the two 
short tributaries to this Ditch along the road in Supply Section 
Storage Yard. 
(p) Ditch 45-L from junction with Ditch 45 to a 
point 200 feet upstream from 24” culvert in this Ditch, 
(q) Ditch 45-M from junction with Ditch 45 to a 
point 250 feet upstream from this junction. 
(r) Ditch 45-S from junction with Ditch 45 to fence 
around gasoline storage area. 
3. Complete restoration of terrain in the Chiva Chiva 
Signal Corps Area to its original condition so that complete drain- 
age will be maintained. Work to include filling of ruts, depres- 
sions, borrow pits, etc. Cost of work not to exceed |3,000. 
4. Fill ruts,-holes, depressions, etc., incident to 
construction of above items. 
Recommended 
Major, Sanitary Corps 
Approved 
Colonel, Medical Corps. 
20 NOTE- Notations In circles thus (Q refer to subdivisions 
of section 8 of accompanying report. 
L & G & N D ' 
/ rou/vp we nr e/ce o/rcn 
eiA-£ CO/VC«£ T£ O/rCH 
£}/rt o/rcry 
■ . j c c/l pert 
scale: /:soov 
WAR DEPARTMENT 
PANAMA CANAL. DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
OUTLYING area along 
ALBROOK- CLAYTON HI WAT 
OFFICE or -THE OEPT. SUR6EOH APPROVED 
£f£CCAf/*£T/C>£G: ~~ 
_ *SsT CH'£f S£aee 
PTSA* w'’s £>£A>ury oer>r. cos*ma~£>£H 
— ~ccZ - 
AUGUST /9-f 3 a»Wfe /VC sAf.C.-Jt i8 
o/?/\u///vas BV 
£//6//V££/=f/N0 PE.O. 
an sci&AfirT&o at? 
OPT. C 6. MALARIA CONTROL - DRAINAGE SURVEYS 
REVISED REPORT COVERING 
FT. KOBBE-HOWARD FIELD - AREA NUMBER SIX 
21 MALARIA CONTROL 
DRAINAGE SURVEYS 
AUGUST 1944 
Revised report on Fort Kobbe-Hcward Field ( Area Number 
Six), listing work for inclusion in the $400,000 Malaria Control 
Project (F.Y, 1945). Reference Maps M.C. 10, M.C, 11, and M.C. 13? 
attached heretoc Preliminary Estimated cost $71,650. 
1. Pave invert and side slopes of following Ditches: 
(a) Ditch 50 from inlet to three 30” culverts at 
junction with Ditch 50-E to junction with Ditch $0-K. 
(b) Ditch 50-B from a point 200 feet downstream 
from the two 36” culverts (near junction with Ditch 50-B-3) to the 
three 24" culverts (400 feet upstream from junction with Ditch 
50-B-10). 
(c) Ditch 50-C-l from junction with Ditch 50 c-l-A 
to point of existing paved ditch 100 feet downstream from junction 
with 50-C-l-D. 
(d) Ditch 50-E from junction with Ditch 50 to two 
30” culverts under Howard Avenue, 
(e) Ditch 51-A from junction with Ditch 51 to 30” 
culvert under taxiway. 
(f) Ditch 51-C from junction with Ditch 51 to 
junction with 51-C-2. 
(g) Ditch 51-C-2 from junction with Ditch 51-C to 
36” culvert under taxiway. 
(h) Ditch 51-E-4 from junction with Ditch 51-F to 
30” culvert under taxiway. 
(i) Ditch 54 from a point 200 feet downstream from 
junction with 54-A to the three 24” culverts near junction with 54-D. 
(j) Ditch 55 from junction with Ditch 55-A to point 
of existing paved ditch about 400 feet upstream from junction with 
55-C. 
23 (k) Ditch 55-C-l for the 200 ft. section between two 
24" culverts in rear of nurses' quarters. 
(l) Ditch 55-C from junction with Ditch 55 to next 
30" culvert. 
(m) Ditch 57 from a point 500 feet downstream from 
junction with Ditch 57-A to junction with Ditch 57-F, 
(n) Ditch 58-D from junction with Ditch 58 to the 
24" culvert under taxiway. 
(o) Ditch 50-D-2 from junction with Ditch 50-D to 
the 24" culvert under Howard Avenue. 
(p) Ditch 58 from a point 300 feet downstream from 
8x8' culvert under Howard Avenue to junction with 58-D. 
(q) Ditch 53-A from junction with Ditch 53-A-l (tide 
water level) to junction with Ditch 53-A-5o 
Above ditches to be straightened where required to remove 
abrupt changes in direction and abandoned sections of channels to 
be backfilled to insure complete drainage. Adjacent banks to be 
regraded where required to drain to paved ditches. Inverts of 
ditches may be 12" or larger precast invert tile or may be mono- 
lithic concrete with bottoms slightly pitched to the center. Side 
slopes may be precast or monolithic concrete provided with frequent 
weepholes where required. 
2. Regrade Ditch 50 from junction with Ditch 50-B to 
the three 30" culverts near junction with Ditch 50-E. 
3. Reset one of the three 30" culverts in Ditch 50 at 
junction with Ditch 50-E with outlet elevation 0.5 feet lower than 
at present and inlet elevation 1.0 feet lower than at present. 
4. Install 14" i round invert tile laid to maximum 
practicable grade in following Ditches; 
(a) Ditch 50 from junction with Ditch 50-K to 4x41 
culvert at junctions with 50-Q. 
(b) Ditches 50-C-l-A, 50-C-l-B, 50-C-l-C, and 
Indicated tributaries. 
(c) Ditch 50-E-l from junction with Ditch 50-E to 
junction with Ditch 50-E-l. 
24 (d) Ditch 50-M from junction with Ditch 50 to point 
of existing paving about 200 feet above this junction. 
(e) Ditch 51-C from junction with Ditch 51-0-2 to end. 
(f) Ditch 51-0-3 from junction with Ditch 51-0 to 
a point 300 feet upstream from this junction. 
(g) Ditch 51-D from junction with Ditch 51 to end. 
(h) Ditch 51-F-4-A from junction with Ditch 51-F-4 
to end, 
(i) Ditch 51-F~4-C from junction with Ditch 51-F-4 
to end. 
(j) Ditch 57 from junction with Ditch 57-F to end. 
(k) Ditch 54-0 from junction with Ditch 54 to a 
point 50 feet upstream. 
(l) Ditch 55-A from junction with Ditch 55 to next 
24” culvert. 
(m) Ditch 55-A-l from junction with Ditch 55-A to 
point of existing paving about 150 feet upstream, 
(n) Ditch 58-0-2 from junction with Ditch 58-D to 
a point 600 feet upstream from this junction. 
(o) Ditch 51-F-5 from junction with Ditch 51-F to 
18” culvert at junction with 51-F-5-B. 
(p) Ditch 51-F-5-A from junction with Ditch 51-F-5 
to 15" culvert under road, 
(q) Ditch 51-F-6 from junction with Ditch 51-F to 
a point 300 feet upstream from this junction. 
# 
(r) Ditch 51-F-7 from junction with Ditch 51-F to 
24” culvert at junction with 51-F-7-C, 
(s) Ditch 53-A from junction with Ditch 53-A-5 to 
20" culvert at junction with Ditch 53-A-8. 
(t) Ditches 53-A-2, 53-A-3, 53-A-5, 53-A-6, and 
indicated tributarie s. (u) Ditch 53-A-7 from junction with Ditch 53-A to 
next culvert under road. Include indicated tributariesc 
5, Complete minor regrading job about 200 feet south 
of junction of Ditches 51-F-4- and 51-F-A-D. 
6, Fill area at end of Ditch 51-F-A-A to minimum depth 
required to drain into Ditch. 
7, Fill old ditch channel crossing Ditch 51-A near 
lower end to minimum depth required to drain into ditch, 
8, Complete minor regrading job at south end of West 
runway, projected. 
9, Fill ruts, holes, etc., incident to construction of 
above items. 
26 Recommended 
Major, Sanitary Corps 
Approved 
Colonel, Medical Corps 
27 SCS\l£~: /4/y.ro*. /:e-fOO 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
drainage: survey 
MALARIA CONTROL 
HOWARD FIELD, C.Z. 
orFice or THf ocpt. APPROVED 
PP/COA/A7P /VDP D . , ■ “ 
jbjr<6-%&. ASsrcmeFsrAfP6-f * 
APPRO f e* f**' C/p<P$ D£PU7P 0PPP 
~ o?T>viffi xflff ~~ 
AUG CAST /S4S 0/?WGkA/0 aa C - 70 
i ( -j—j— 
L- Er G Er N O 
jr pou/VO PV\/PP?T T/C S D/TCH 
pcs/, l cope m/ppp o/pc/y 
o/p p o/pcp 
Cl// VP Pf7~ 
MOTE'- Notations in circles ihus @r efer To sutxT'vij/orjs 
oi secf'on 9 of accompanying report. piOTL: Notations in circles thus &) refer -to subdivisions 
of section 9 oi accompai-iyinc) report 
L P 6 E M D — 
SpOUA/D PVUPpr TILE 0/TCH 
Pulp coiscste re o/tch 
onp-r D/TCp/ 
cue 1/e’rp T 
SCALE: /" - 2 O o' APPROX. 
W 4R DEPARTMENT 
panama canal department 
DRAINAGE SURVEY 
MALARIA CONTROL 
HOWARD FIELD, CZ. 
OFF/CB OF THE OFF*T. 3C/F$<3EON p Q 
F/OF C> ' 
l$**~&n,ASSr.CHf£PS7APP G-f_ 
C/&T S4R- CORPS 
APPROVED y d£ PT. c cuviMAHDer/p 
~COL TPlSO. coRpS" — — — — — — 
SEPT. / 9 OPf\AK> AfJ Ad C- U TS NOTE'- Notations in circles Thus &) refer to subdivisions 
°f section -9. of accompanying report 
I 
U -E- G t M D 
J POU/VO T/LE O/TCH 
eul l con cpete o/ecn 
O/Prr o/ rc/v 
ci/c 
/ 
<y 
/ SCAitr: / = zoo' APPROX. 
WAR DEPARTMENT 
k PANAMA canal department 
drainage SURVEY 
MALARIA CONTROL 
HOWARD FIELD, C. Z. 
orr/cr of tee Dr ft. sungeon 
PE com m E mDep ~ ~ 
esst chuf stage g -j 
CAV-T SEE COUPS 
i o (T) (p deputy depy comm an o/r p 
CQFMpb. coWps*~ ~~~ - — — - -|jg- 
SE PT I9P3 OP'vu'G ns AA c - t2 
HtarAE LEGEND - 
P /ROi/svo r/j-c o/rcfy 
R'tU.J. COUCRlFTS: O/TCP/ 
— ou=rr jd/ tcR 
1 OAV'A'A’7' 
/" =zoo' approx 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE 5URVEV 
MALARIA CONTROL 
HOWARD FIELD, C.Z. 
or nee or tme a?F*T. >APPRO\/ED 
/=t£COASM£ */0£TD 
*25T. cmrstaff o + 
CAPT. SAH. CORPS — 
APPROVE P OF/=>r COMMARDF/P 
-— 2T 
AUGUST /9-4 3 Ars A4.C.-/3 
NOTE - Rotations in circles i hus @ Refer fo subdivisions 
of section g of accompanying report". MALARIA CONTROL - DRAINAGE SURVEYS 
REVISED REPORT COVERING 
FT. DAVIS - AREA NUMBER ELEVEN 
29 MAURIA control 
drainage surveys 
AUGUST 1944 
Revised report on Fort Davis (Area Number Eleven) list- 
ing work for inclusion in the $400,000 Malaria Control Project 
(F.Y. 1945) Reference Maps M.C, IB and M.C. 19 attached hereto* 
Preliminary Estimated Cost $39,950. 
1. Pave invert and side slopes of following Ditches. 
(a) Ditch 96 from 7l,xl5l culvert at junction with 
96 - Q to junction with ditch 96-K. 
(b) Ditch 97 from 42'xlO1 culvert at Bolivar High- 
way to junction with Ditch 97-V. 
(c) Ditch 97-F from junction with Ditch 97 to cul- 
vert near junction with 97-F-8 and from 24” culvert near junction 
with Ditch 97-F-16 to junction with Ditch 97-F-20, 
(d) Ditch 97-F-14 from junction with Ditch 97-P 
to a point 200 ft. upstream from junction with Ditch 97-F-14-C. 
(e) Ditch 97-T from junction with Ditch 97 to 24" 
culvert at end. 
(f) Ditch 97-V from junction with Ditch 97 to 
existing paved section about 200 ft, upstream. 
Above ditches to be straigntened where required to re- 
move abrupt changes in direction and abandoned sections of channels 
to be backfilled to insure complete drainage. Adjacent banks to 
be regraded where required to drain to paved ditches. Especial 
care shall be taken to minimize damage to the golf course adjacent 
to certain of these ditches and the golf course shall be left in a 
condition upon completion of work equal to its condition at the 
start of the work. Inverts of ditches may be 12" or larger precast 
concrete tile or may be monolithic concrete slightly pitched to 
center. Side slopes may be precast or monolithic concrete provided 
with frequent weepholes where required, 
2. Install f round invert tile laid to maximum practi- 
cable grade in following Ditches; 
31 (a) Ditch 97-F from junction with Ditch 97-F-20 to 
end of Ditch, 
(b) Ditch 97-F-U-C from relocated Ditch 97-F-U to 
point of existing paving. 
(c) Ditches 97-F-18 and 97-F-19, 
3. Fill ruts, holes, etc., incident to construction of 
above items. 
32 Recommended 
Major, Sanitary Corps 
Approved 
Colonel, Medical Corps SCALE: /"= ZOO' fApp rox.) 
WAR DEPARTMENT 
PANAMA CANAL. DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FORT DAVIS, C.Z. 
OrriCE OF THE DEPT. SURGEON APPROVED 
4SST. cntirr G- + 
AfsF= y D£fi*7\ COA*AiAA/0£F* 
yyov'., /9*s D’R'wts /v-a asc-/s 31 < 
J 
*> L E G E N D ■> 
2 Ft ohho iHVEFfr tile Ditch 
- FULL COHCFtETE: O/TCH 
- DIRT O/TCH 
CUL VET Ft T 
NOTE' Notations in circles thus (prefer to subdivisions 
of section /4 of accompanying report. NOTE.■ Notations in circles to- subdivisions 
ot seat/on /4 of accompanying report 
SCALE.: /"- ZOO' fA^vrJ 
WAR DEPARTMENT 
RAN/AMAv CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FORT DAVIS. C.Z, 
orricfcor rrfc otpr. soRseon APPROVED 
Pfcovnff/voE o 
/ Y'"' ‘/» SH *L*rcJi>er G * 
oe„UTy cov,^ 
- * 77- 
n/o\s.t 1943 o'/=?Vvls /v-s a* 
yt-pjt r 
- LEGEND 
£ AOC/HO /A/VEAT TILL -OITCH 
rOLL COA/CAETE E*TO/f 
£>ff=tr- o/re/t 
COLBERT MaLARIa CONTROL - DRAINAGE SURVEYS 
REVISED REPORT COVERING 
FRANCE FIELD - AREA NUMBER FOURTEEN 
35 DRAINAGE SURVEY 
MALARIA CONTROL 
AUGUST 1944 
Revised report on France Field (Area Number Fourteen) 
listing work for inclusion in the $400,000 Malaria Control Project 
(F.I.1945). Reference Maps M.C. 23, M.C. 24, M.C. 2$, and M.C. 26 
attached hereto0 Preliminary estimated cost $89,100, 
I. Pave invert and side slopes of following ditches; 
(a) Ditch 123 from junction with Ditch 123-Q to a 
point 1200 feet upstream from inlet to the two 60w culverts under 
South end of runway. 
(b) Ditch 123-D from junction with Ditch 123-0“! 
to junction with Ditch 123-D-6. 
(c) Ditch 123-Q from junction with Ditch 123 to 
24” culvert under runway. 
(d) Ditch 123-Q-3 from junction with Ditch 123-Q 
to 36” culvert under taxiway. 
(e) Ditch 123-V from junction with Ditch 123 to 
Ditch 123-V-2. 
(f) Ditch 123-W from junction with Ditch 123 to 
end. 
(g) Ditch 123-Y from junction with Ditch 123 to 
a point $00 feet upstream from this junction, 
I 
(h) Ditch 127 from junction with Ditch 127-B to 
junction with 127-C, 
(i) Ditch 127 from junction with Ditch 127-C to 
the 36” culvert under runway. 
(j) Ditch 127-C from junction with Ditch 127 to 
a point 200 feet upstream from junction with Ditch 127-C-1. 
(k) Ditch 127-C-l from junction with Ditch 127-C 
to 60n culvert at junction with 127-C-1-B, 
37 (l) Ditch 134- from Naval property line near junction 
with Ditch 134-A to outlet of 60“ culvert near junction with Ditch 
134-G. 
(m) Ditch 134- from inlet to 30" culvert at junction 
with Ditch 134-E to junction with Ditch 134--J. 
(n) Ditch 134--J from junction with Ditch 134- to 
Naval fence line about 200 feet upstream from 30“ culvert under 
by-pass road. 
(o) Ditch 133 from West fence around fuel storage 
area to a point 1300 feet upstream from this fence, 
(p) Ditch 122 from junction with Ditch 122-T to the 
two 24” culverts under taxiway. 
(q) Ditch 123-S from junction with Ditch 123 to 
junction with Ditch 123-S-1, 
(r) Ditch 127-B-l from junction with Ditch 127-B 
to next 18“ culvert. 
Above ditches to be straightened where required to re- 
move abrupt changes in direction and abandoned sections of channels 
to be backfilled to insure complete drainage. Adjacent banks to 
be regraded where required to drain to paved ditches. Inverts of 
ditches may be 12” or larger precast concrete tile or may be mono- 
lithic concrete slightly pitched to the center. Side slopes may 
be precast or monolithic concrete provided where required with 
frequent weepholes. 
2. Fill following abandoned ditch channels to minimum 
depth required for drainage and install £ round invert tile in 
them to provide local drainage; 
(a) DJ.tch 127-A 
(b) Ditch 129 
(c) Ditch 129-A 
(d) Ditch 130 
(e) Ditch 123-D-4 from junction with Ditch 123-D-4-B 
to end. 3. Lower 30n culvert in Ditch 134- to junction with 
Ditch 134-E if required to obtain a steeper gradient for Ditch 
134- for section between this culvert and junction with Ditch 
134-J. 
4. Lower 30" culvert in Ditch 134-J under by-pass road. 
5. Fill Ditches 123-D-4-A, 123-R, 123-V-4, 123-V-l, and 
123-V for section above junction with 123-V-2, 
6. Fill following areas to minimum depth required to 
drain to adjacent paved ditches: 
(a) Each side of Ditch 123-D-4-B, 
(b) Each side of Ditch 123-D from a point about 
250 feet downstream from junction with Ditch 123-D-6 to end. 
(c) Each side of Ditch 123-D-6 from junction with 
Ditch 123-D to a point about 250 feet upstream from this junction. 
(d) Ehch side of Ditch 123-V from junction with 
Ditch 123 to junction with Ditch 123-V-2 
(e) Triangle between Ditches 123-V and 123-W. 
(f) Triangle between Ditches 123-V and 123. 
(g) Along south bank of Ditch 123-W. 
(h) Along each side upper section of Ditch 127-E, 
(i) Along each side ditch 134-J upstream from 30” 
culvert, 
7. Install 12" i round invert tile laid to maximum 
practicable grade- in following ditches; 
(a) Ditch 123-Q-l and indicated tributaries. 
(b) Ditch 123-T for about 100 feet from junction 
with Ditch 123. 
(c) Ditch 123-U for 450 feet above junction with 
Ditch 123. 
(d) Ditch 123-V-2 upstream from junction with 123-V 
39 (e) Ditches 123-V-2-A and 123-V-2-A-1. 
(f) Ditches 123-X, 123-X-l, and 123-Y-l. 
(g) Ditch 123-D upstream from junction with Ditch 
123-D-6. 
(h) Ditch 123-D-4 from junction with Ditch 123-D 
to junction with 123-D-4-B, 
(i) Ditch 123-D-4-B. 
(j) Ditch 123-D-6 from junction with Ditch 123-D 
to junction with Ditch 123-D-6-A, 
(k) Ditch 127-C-l-A and tributary. 
(l) Ditch 127-C-l-B, 
(m) Ditches 127-E and 127-D. 
(n) Ditch 134 from junction with Ditch 134-J to 
24" culvert under by-pass road, 
(o) Ditches 134-F, 134-G, 134-H, and 134-K. 
8. Fill extensive holes and depressions in area located 
about 1000 feet northeast of junction of Ditches 122 and 122-T 
with 14" & round invert tile drain from the two mag or seepage 
areas in this area to junction of Ditch 122-H and 122-H-3. 
9. Fill ruts, holes, etc., incident to construction 
of above items. Recommended 
Major, Sanitary Corps 
Approved 
Colonel, Medical Corps - LEGEND - 
j hound /nvd/rt t/lc orftH 
pull conchete ditch 
DURT DITCH 
CUL VEflr 
NOTE■ Notations In circles thus refer to subdivisions 
of section !7 of accompanying report. 
SCAA£T.' /” S.OO' fAppi-o*..j 
WAR DEPARTMENT 
panama canal department 
DRAINAGE SURVEY 
MALARIA CONTROL 
(OLD) FRANCE FIELD, C. Z. 
OrriCE or THE DEPARTMENT SURGEON 
£R£C OMAddN/DeiD : 
Xk&g, CH,er STArr *'* 
/{F>f=>F*Q^ t £>£PUry DCPT. COA4MA f\Za/E^=R 
0£rc .t JQ Mj D’R'W'C* /V* M C - 23 38 NOTE: Notations in c/rc/es {hus,\&3Jrefer io Subdivisions 
of section // of aicotnponying report 
SCAE£~; /'-200 
- U E. G E N P 
WAR DEPARTMENT 
panama CANAL department 
DRAINAGE 5URVEY 
MALARIA control 
(new) FRANCE FIELD, C.2. 
OFFICE OF THE* DEPT SURCEON Vp]~^ 
**£TC OAfNFHOCD: 
ASST STArr Q-* 
.flew DEPUTY dept, commander 
DEC., RfHj O'R'W'O Ho MC 39 
Rc<ri(e 
f ROOHD INVERT TILE DITCH 
ROLL CONCRETE DITCH 
d/ht Ditch 
c UL VER T MOTE: Notations /n circles thus,refer to subdivisions 
of section !7 of accompanying report 
5CAA£T. /'• ZOO‘ (AppnoK.) 
WAR DEPARTMENT 
PANAMA CANAL DEPARTMENT 
DRAINAGE SURVEY 
MALARIA CONTROL 
FRANCE FIELD, C. Z. 
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WAR DCPARTMENT 
PANAMA CAMAL DEPARTMENT 
DRAINAGE SURVEY 
M At APIA CONTROL 
FRANCE FIELD, C.Z. 
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