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Hudson. H. II. Stade, Geo. (n)

Humphries. Will Spriegel. Mrs. F.

Kearney, Edw. C. Tai Lung Woo

Killcourse, Guy Van Dervoort, J. S.

Kirkpatrick. Sam J. Vaughn, Mrs. (nee Kennedy)

Martinez, Maria Wagner, C. B.

Maxwell. J. (el Walter, Geo. L.

McQueen, Philip Wilkes, Samuel G.



Tide Table.

The following table shows the time of high and low
tides at Panama for the week ending March 8, 1911,
(75th meridian time):



Date.


Low.


High.


Low.


High.


Low.




A. M.


A. M.
4.40
5.17

5.55
6.35
7.17
8.00
9.00


A. M.
10.55
11.33
P. M.
12.10
12.50
1.35
2.20
3.20


P. M.
5.00
5.37

6.15

6.55
7.37
8.25
9.23


P. M.

11.17






11.55








March 8


12.35
1.18
2.03
3.00





Stages of the Chagres.

Maximum heights of the Chagres River for the week
ending midnight, Saturday, February 25, 1911. All
heights are in feet above mean sea level.





Station.


Date and Date


Vigia.


3

3

"3

<


a

o

a

«
O


d

o

m


a .
3 V.

« rt


Sun. Feb. 19.. .
Mon. Feb. 20. .
Tues. Feb. 21. .
Wed. Feb. 22 . .
Thurs. Feb. 23.

Fri. Feb. 24

Sat. Feb. 25.. ..


127.0
126.9
126.5
126.4
126.2
126.2
126.3


93.4
93.2
93.0
92.9
92.8
92.8
92.8


46.7
46.2
45.9
45.6
45.5
45.5
45.6


14.9
14.7
14.4
14.2
14.0
13.8
13.6


14.8
14.6
14.4
14.2
14.0
13.8
13.6


Height of low


125.0


92.0


45.0







Lost — On February 22, in Panama, a watch and fob,
inner case of watch bearing tne inscription "Fanney to
N. H. T. Hamill, Class 1889." Reward of $10.
Communicate with P. O. Box. No. 189. Empire. C. Z.



MOVEMENT OF OCEAN VESSELS.

The following Is a list of the sailings of the Panama
Railroad Steamship Company; of the Royal Mail Steam
Packet Company; of the Hamburg- American Line, and
of the United Fruit Company's Line, the Panama Rail-
road Company's dates being subject to change:

NEW YORK TO CRISTOBAL.

Allianca P. R. R. . .Wednesday . Mar. 1

Colon P. R. R. . .Tuesday Mar. 7

Advance P. R. R. . .Monday Mar. 13

Panama P. R. R . . . Saturday. . . Mar. 18

Allianca P. R. R. . .Friday Mai. 23

Colon P. R R. . .Friday Mar. 31

Advance P. R R. . .Thursday . .Apr. 6

Panama P. R. R . . . Wednesday .Apr. 1 2

Allianca P. R. R.. ..Tuesday. . .Apr. 18

Colon P. R. R. ..Monday.... Apr. 24

Advance P. R. R. . .Saturday. . .Apr. 29

CRISTOBAL TO NEW YORK.

Ancon P. R. R . . . Monday. . . . Mar. 6

Panama P. R. R . . . Tuesday Mar. 7

Allianca P. R. R . . . Monday .... Mar. 13

Colon P. R. R. . .Sunday.. . .Mar. 19

Advance P. R. R . . . Saturday . . .Mar. 25

Panama P. R. R. ..Friday Mar. 31

Allianca P. R. R. . .Thursday. ..Apr. 6

Colon P. R. R . . ..Wednesday . Apr. 1 2

Advance P. R. R. . .Tuesday. ...Apr. 18

Panama P. R. R . . . Tuesday . . . Apr. 25

Allianca P. R. R. . .Monday ... May 1

Colon P. R. R... Saturday. ..May 6

Advance P. R. R. . .Friday May 12

A fortnightly service of the Cristobal and Ancon will
be maintained as nearly as possible. Due notice of
the sailings of these ships from the Isthmus will be
given. On the outward voyage these ships sail from
the pier at the foot of 12th street, Hoboken, N. J.

NEW YORK TO COLON.

Metapan U. F. C . . . Thursday. . . Feb. 23

Prinz Joachim H.-A Saturday. . .Feb. 25

Zacapa U. F. C. . .Thursday.. .Mar. 2

Thames R. M Saturday. . .Mar. 4

Sibiria H.-A Saturday. . .Mar. 4

Almirante U. F. C . . . Thursday . . .Mar. 9

Prinz Aug. Wilhelra. . .H.-A Saturday. . .Mar. 11

Santa Marta U. F. C . . . Thursday . . Mar. 1 6

Trent R. M Saturday. . .Mar. 18

Metapan U. F. C. . .Thursday. ..Mar. 23

Prinz Joachim H.-A. Saturday . . . Mar. 25

Oruba R. M Saturday . . . Apr. 1

Magdalena R. M Saturday. . .Apr. 15

COLON TO NEW YORK.

Santa Marta U. F. C. . .Thursday Mar. 2

Tagus R. M Tuesday. . ..Mar. 7

Metapan U. F. C . . . Thursday . . Mar. 9

Prinz Joachim H.-A Tuesday. . .Mar. 14

Zacapa U. F. C. . .Thursday... Mar. 16

Oruba R- M Tuesday. . ..Mar. 21

Almirante U. F. C . . . Thursday. . . Mar. 23

Prinz Aug. Wilhelm. ..H.-A Tuesday. ...Mar. 28

Magdalena R. M Tuesday. . .Apr. 4

NEW ORLEANS TO COLON.

Cartago U. F. C. . .Wednesday. Feb. 22

Turriaiba U. F. C. . .Saturday. . .Feb. 25

Parismina U. F. C. . .Wednesday. Mar. 1

Abangarez U. F. C. . .Saturday. ..Mar. 4

Heredia U. F. C. . . Wednesday.Mar. 8

Atenas U. F. C . . . Saturday. . . Mar. 1 1

COLON TO NEW ORLEANS.

Atenas U. F. C Thursday. .Mar. 2

Cartago U. F. C. . .Thursday.. Mar. 2

Tutriafba TJ. F. C. . -Thursday. .Mar. 9

Parismina U. F. C . . . Thursday. . . Mar. 9

Abangarez U. F. C... .Thursday. .Mar. 16

Heredia TJ. F.C. . . .Thursday. .Mar. 16

COLON TO BARBADOS. CALLING AT TRINIDAD.

Thames R. M Tuesday. . .Mar. 14

Trent R. M Tuesday. . .Mar. 28

Oruba R. M Tuesday . . . Apr. 1 1

Magdalena R. M Tuesday . . . Apr. 25

The next sailing of the Leyland Line will be as fol-
lows: Colonian on or about March 19, for New Orleans,
via Kingston, Ja.

Hamburg- American steamers leave for New York
every Tuesday at 10 a. ra.; for Jamaica every fortnight,
connecting there with steamers for all points in Cuba;
for Port Limon every Tuesday, direct, or by way of
Bocas del Toro.

Royal Mail steamers leave for New York on alternate
Tuesdays at 12 noon; for Southampton on alternate
Tuesdays at 10 a. m.

United Fruit Company's shipB for New Orleans direct
leave on Thursday at 3 p. m.; for New Orleans via Port
Llmon and Puerto Barrios on Thursday at 4 p. m..
and for New York on Thursday at 1 1 a. m.

Sailings of the French line (Cie Generate Transatlan-
tlque) for Venezuelan ports, Martinique and Guade-
loupe on the 3d and 20th of each month.



CANAL




RECORD



Volume IV.



ANCON, CANAL ZONE, WEDNESDAY, MARCH 8, 1911.



No. 28.



The Canal Record

Published weekly under tnr authority and supervision of
the Isthmian Canal C ommission.

The Canal Record is issued frte of charge, one copy
each, to all employes of the Commission and Panama
Railroad Company whose names are on the gold roi ,
Extra copies and back numbers can be obtained from the
news stands of the Panama Railroad Company for five
cents each.



Address all Communications

THE CANAL RECORD

Anam, Canal Zone,
Isthmus of Panama.

No communication, either for publication or requesting
information, witi receive attention unless signed with the
full name and address of the writer.

NOTES OF PROGRESS.



Excavation In Central Division During February.

The total excavation in the Central Divi-
sion for the 23 working days during the month
of February, 1911, was 1,630,758 cubic yards,
of which 1,623,152 cubic yards were from the
Canal prism, 5,736 cubic yards from the
Obispo diversion, and 1,870 cubic yards were
outside work. The amounts excavated, and
remaining to be excavated, in the Central
Division are, as follows:



Culebra Cut

Chagres Section.



Excavated.



Cu. Yds.
59,671,665
11,361.857



Remaining.



Cu. Yds.

24.515.059

1,576.437



71,033.522 26,091.496



The excavation in the prism for this month
is the greatest February prism excavation of
record within the limits of the Central Divi-
sion, and exceeds the next highest record, made
in February, 1909, by 77,144 cubic yards, and
that of February, 1910, by 77,670 cubic yards.
The total excavation from the Canal prism
in the Culebra section of the Central Division,
including the small amount of work done on
the Obispo diversion, was 1,409,338 cubic
yards in February, 1911, which is much the
largest output in this section for the same
month since operations were commenced by
the United States, the greatest previous out-
put having been 1,259,173 cubic yards in
February, 1910.



Canal Work in February.

The grand total of Canal excavation to
March 1 was 131,829,436 cubic yards, leaving
to be excavated 50,70S,330 cubic yards.

The total for February was 2,714,174 cubic
yards, as compared with 2,602,995 cubic yards
in February, 1910, and 3,14S,S79 cubic yards
in February, 1909. Of the total, 2,691,036
cubic yards were "work excavation," and
23,138 cubic yards were "plant excavation."

The dry excavation amounted to 1,759,083
cubic yards and was principally by steam
shovels. The dredges removed 950,787 cubic
yards and 4,304 cubic yards were sluiced, in
addition to the amount pumped into Gatun



Dam by suction dredges. The progress on
the locks at Gatun, Pedro Miguel and Mira-
flores is referred to elsewhere in this issue.

In the Atlantic Division, the total excava-
tion was 574,199 cubic yards. Of this total,
97,613 cubic yards were dry excavation, and
the remainder was removed by the dredges
in the Atlantic entrance.

The total excavation in the Central Divi-
sion was 1,630,758 cubic yards, and further
reference to this work is published elsewhere
in this issue.

In the Pacific Division, the total excavation
was 509,217 cubic yards, 386,866 cubic yards
of which were taken out by the dredges at
the Pacific entrance.

A detailed statement of the excavation, and
a summary of the work on the locks and dams,
follow:

ATLANTIC DIVISION.



Locality.


"Work."
Excava-
tion.


"Plant."
Excava-
tion.


Total
excava-
tion


Dry excavation —
Locks. Dam and Spill-


Cu. Yds.

50.511
47,102


Cu. Yds.


Cu. Yds.

50.511






47 102








Total


97,613




97,613














Atlantic entrance ....
Locks. Dam and Spill-


455.318


21.268


476.586










Total


455.318


21.268


476,586


Total wet and dry


552.931


21 ,2SS


574.199



CENTRAL DIVISION.



D*y excavatinn-

CulebraCut

Chagres section...
Obispo Diversion.,

Wet excavation-
Chagres section . .



Total . .



1.403.602

215.246

5.736



1.870



1.403.602

217.116

5,736

4,304



1.630.758



PACIFIC DIVISION.



Dry excavation —
Locks, Dams and Spill-


19.745




19,745






Prism, south of Pedro


15,271












Total


35.016




35.016




386,8*6
87.335










87,335
















Total


474,201




474.201
















Total wet and dry


509,217




509.217



TOTAL


CANAL EXCAVATION.




Dry excavation


1.757.213
933.823


• 1.870 |
21,268


1,759,083

955.091








Total


2 691.036


23.138 i


2.714,174



Mean rainfall along Canal (eleven stations) 1.46
inches.

By "Work" Excavation is meant excavation actu-
ally made for one of the constituent parts of the Canal,
such as Prism. Diversions, or Locks etc.: that is. it
represents material taken from the area to be occu-
pied by the Canal, and constitutes excavation useful
for the completed Canal.

By "Plant" Excavation is meant excavation outside
of any of the constituent parts of the Canal, such as



Prism, Diversions, or Locks, etc. It includes mate-
rial necessary to be excavated for construction pur-
poses only and is chargeable against the particular
plant item for which it is performed, such as Prism.
Diversions. Locks, etc.

DAM AND LOCK CONSTRUCTION.



Material.



Concrete laid in locks.
Concrete laid in dams

and spillways

Fill placed in dams. . .



Atlantic.



Cu. Yds.
72.103



6.609
512.741



Pacific.



Cu. Yds.
57.907



119.739



Cu. Yds.
130.010



6,609

632.480



Concrete Piles for Guide Wall Foundation.

The upper guide wall at Gatun locks will
be a continuation of the center wall and will
extend into Gatun Lake a distance of 1,500
feet from the upper guard gate. The founda-
tion for 850 feet of it, in the bed of the lake,
will be on piles, and the wall itself in this
section will be of cellular, reinforced concrete
construction. The reinforced concrete piles
for this work are now being made at Gatun,
where two casting platforms have been built
on the east bank of the lower locks. The
piles are rectangular in cross section, and are
reinforced by four longitudinal angles near
the four corners, connected at intervals of
18 inches by lateral straps. The reinforcement
is in sections 12 feet long, so that piles of any
length in multiples of 12, may be made. On
the lower end of each pile is a cast iron shoe,
and the upper end is heavily reinforced to
give strength for the blow of the driver. In
driving, a "driving head" is placed over the
top of the pile. It consists of a piston which
passes into a cylinder in which there is a
cushion of sand, rope, and wood. The hammer
strikes the piston and the blow is tran=mitted
by it through the cushion to the pile. Six
of these piles were driven last week, one to a
depth of sixty feet, and the others to depths
varying from IS to 24 feet, and in every case
the results were good. Two steam pile
drivers will be used in this work, and each will
drive 10 piles in eight hours. It is estimated
that 3,500 piles will be required for the founda-
tion.

At the Pacific Entrance.

The Canal at the Pacific entrance is com-
pleted from deep water to a point opposite
the Panama railroad wharf at Balboa, a dis-
tance of about five miles, and apart from the
removal by the suction dredge Culebra of a
few loads of fill each month, there is no fur-
ther dredging to be done in that section.
The open water channel continues inland for
a distance of about three miles from the Bal-
boa wharf, and in this part of the Canal three
of the dredges are now working. The depih
of the channel varies from 30 to 45 feet at
mean tide, and certain sections of it have
been excavated to its final width of 500 feet.
Considerable work, however, remains to be
done on the west bank, where several rock
patches project into the channel, and these
are being drilled and^mined preparatory to



218



THE CANAL RECORD



Vol. IV., No. 28.



NOTES OF PROGRESS.



(Continued.)



their removal by the dredges Two of the
Pacific Division dredges were recently set at
work in the prism south of the dam at Mira-
flores, as their ladders are not long enough
to permit them to continue the excavation
in the open channel, except at mean tide, or
below, and to keep them there would neces-
sitate laying off one crew and working only
a 12-hour day. The dredging fleet at the
Pacific entrance consists of one seagoing
suction dredge, four French ladder dredges,
and one 5-yard dipper dredge. A new sea-
going 2-yard ladder dredge for the Pacific
end of the Canal is now under construction
at Renfrew, Scotland, and is due for delivery
at Balboa about September 1, 1911. The
dredging work on the American Canal in the
Pacific Division was begun in January, 1907,
and up to March 1, 1911, a total of 26,581,119
cubic yards had been excavated.



The Atlantic Entrance.



In the Atlantic entrance to the Canal the
channel is completed to its full width of 500
feet as far as the French canal, which is five
miles and 2,438 feet inland from deep water in
Limon Bay. The channel is 40 feet deep to
a point 3,900 feet from deep water, 35 feet to
a point three miles inland, 30 feet deep to a
point 4 miles and 800 feet inland, and 20 feet
deep as far as the French canal . The amount
of material to be excavated in this section is
30,600,000 cubic yards of earth, including
fill, and 3,800,000 cubic yards of rock. On
March 1st, 20,175,000 cubic yards of earth
had been taken out, and 2,250,000 cubic
yards of rock, the earth excavation being 66
per cent, and the rock 59 per cent completed.
The plant engaged in this work includes a sea-
going suction dredge, three old French ladder
dredges, and two modern dipper dredges, and
auxiliary fleet. The excavation of rock under
water is accomplished by drilling and blast-
ing the rock prior to dredging. The drilling
is done by eight common well drills, mounted
on a barge served by one boiler and moved
from place to place according as the work is
completed. This excavation is being done at
less cost than dry excavation, the greatest
element of economy being the method of
drilling, in which the whole battery of drills is
moved at one time, and is served by a small
force of men.



Naos Island Breakwater.

The breakwater between Balboa and Naos
Inland has been constructed for about 8,300
feet, leaving about 4,500 feet to be con-
structed before the island is reached.



Colon Breakwater.



The breakwater which extends from the
west shore of Limon Bay, out toward the
Canal entrance, had been extended 3,137 feet
on March 4, and rock had been dumped to
within 15 feet of the surface of the water for
about 3,0/5 feet. A total of 202,659 cubic
yards of rock, quarried on the main land near
the breakwater, has been placed. The piles
which are driven for the trestle encounter
all sorts of material, from hard coral bottom,
which must be blasted, to a mixture so soft
that they penetrate to a depth of 40 feet.
The breakwater will be armored with hard
rock from Porto Bello, which will be placed by



means of derricks operating on barges. Plans
for the derrick barges have been completed.
The driving of the trestle was begun in August,
1910, and the dumping of rock in September.



Notice to Free Masons.

The ground for the new Masonic temple
to be erected on the corner of Eleventh and
Bolivar streets. Cristobal, will be broken on



Sunday morning, March 12, at 10 a. m. All
Masons sojourning on the Isthmus are in-
vited to be present and join with Sojourner's
Lodge, No. 874, on this occasion. They will
meet in the hall, corner of Fifth and Bolivar
streets, Colon, on the arrival of the 9 a. m.
train, proceeding from there to the lot.

C. G. Carty, R. W. M.



CONCRETE WORK IN THE LOCKS.



GATUN LOCKS.



About 56 per cent of the concrete for the system of three twin locks at Gatun has been laid,
the exact amount in place at the close of work on March 4, being l,160,752j cubic yards,
out of a total of 2,085,000.

A statement of the amount of concrete placed in the locks each day for the week ending
March 4, and of the total, follows; and a similar statement for the work in the spillway of
Gatun Dam is published elsewhere in this issue. The construction plant works 12 hours daily,
and the auxiliary plant 9 hours.





Construction Plant.
2-cubic yard mixers.


Auxiliary Plant.
2-cubic yard mixers.


Large
stone.






Concrete
placed.


Hours
worked.


No. of
mixers


i |
Concrete Hours No. of
placed, worked, mixers






2.260
2.588
2,394
2,496
2,486
2,582


37:41
42:33
42:22
42:41
44:12
43:06


8
8
6
6
6
6


452
348
426
366
416
454
229


6:40
7:40
7:40
7:40
7:40
6:50


2
2
2
2
2
2


2415

295}

2665

162

203}

256}


2.9885




3.257




3.112J




3,095}




3.129}




3.339}






















14,806


251:55


6.67


2.691


42:50


1.425}


18.922}




1.141,830




















1.160,752}



















*The 229 vards shown for the portable mixers are reinforced concrete, and were placed on the following days:
February 27th, 35 yards; February 28th, 25} yards; March 1st, 26 yards; March 2d. 71 } yards; March 3d, 24
yards; March 4th, 47 yards.

PEDRO MIGUEL LOCKS.

Concrete work in the locks at Pedro Miguel is over 67 per cent completed, 565,547 cubic
yards, out of a total of 837,400, having been placed at the close of work on March 4. The
record for each of the six 8-hour working days of last week, follows:





Construction Plant.




Auxiliary Plant.






Large

stone.






2-cubic yard mixers.


2-cubic yard mixers.


}-cubic yard mixer.


Total.




I
Concrete Hours
placed, worked.


No. of
mixers


Concrete
placed.


Hours 1 No. of
worked, mixers


Concrete
Placed.


Hours
worked.


No of
mixers.




Feb. 27...
Feb. 28...


Cu. Yds.
930
1.016
810
856
740
976


15:00

15 00
12:00


2
2
2


Cu. Yds.

748
600
596
828
822
714


16:58
15:P2
14:82
18:30
19:00


3
3
3
3
3


Cu. Yds.
32
34


3:00
3:00


1
1


Cu. Yds.


Cu. Yds.
1.710
1.650
1,406


March 2 . .


14:00
10:00
13:00


2
2
2


18


2:00


1




1,702
1.562




18:00 3










1,690












Total

Previously


5.328


79:00


2


4.308


102:52


3


84


8:00


.5


4.178


9,720
555,827
























Grand
total .


4,178


565,547



MIRAFLORES LOCKS.

About 1 1 per cent of the concrete for the system of locks at Miraflores was in place on
March 4, the total amount on that date being 146,243 cubic yards, out of a total of approxi-
mately 1,362,000. The record for each of the six 8-hour working days of last week, follows:





Auxiliary Plant.




Date.


2-cubic yard mixers.


}-cubic yard mixers.


}-cubic yard mixer.


Total.




Concrete
placad.


Hours
worked.


No. of

mixers


Concrete Hours No. of
placed. ' worked. ' mixers


Concrete

pl.H eij.


Hours
worked.


No. of

mixers


Large

stone.






424
464
544
480
472
490


7:50
8:00
10:50
9:00
8:67
8:67


2
2
2
2

2
2


412
285
514
654
495
461


27:50
20:50
37:00
40:00
26:00
30:25


5
5
5
5
4
4








33
20
30
28

13
12


869










769










1.088


March 2. .
March 3 . .
March 4. .


53
79
85


5:00
5:25
6:00


1

1
1


1.215
*1,070
tl,070


Total
Previously


2,874


52:34


2


2.821


181:25


4.66


217


16:25


.5


136
3.397


6,081
140,162
























Grand


3,533


146.243

























♦Includes 11 cubic yards laid byjhand.



t Includes 22 cubic yards laid by hand.



Marth 8, 1911.



THE CANAL RECORD



219



GATUN LOCKS



Excavation is About Completed and Nearly 56
Per Cent of Concrete Is In Place.

Excavation in Gatun Locks is practically
completed, all that remains being a small
amount of material which has slid into the
lower lock site from the east bank. In the
north approach to the locks, however, excava-
tion has only been begun by a 20-inch suction
dredge, which will dig to a depth of 45 feet
below sea level for the approach channel, and
also dig the foundation for the center guide
wall, and the north wing walls. This work
will be carried on while concrete laying is in
progress in the lower lock, the two pits being
separated by a bulkhead. When the suction
dredge has finished its work, it will be with-
drawn and the pit will be unwatered so that
concrete may be placed.

About 56 per cent of the concrete for the
locks and approaches is in place. The record
of this work by months since August, 1909,
and the output of last week, are shown in
tables published elsewhere in this issue. The
estimated amount of concrete to be placed is
2,085,000, and there therefore remained to be
laid on March 4th, 924.34S cubic yards. In
the upper locks all concrete laying is finished,
excepting that around the culvert valves and
the reinforced concrete of the operating tun-
nel in the center wall. In the middle locks
the side walls are completed, excepting the
gate and valve monoliths, and the center wall
is about half done. The lift wall between the
middle and lower locks was completed on
March 7. Concrete laying has but fairly
begun in the lower locks, about 10 per cent
of the floor being in place. Work is in prog-
ress on trestles on which the steel forms for
the wall monoliths will be moved from the
middle to the lower locks. Concrete laying
will then be begun in the side walls, and they
will be built to a height of 25 feet, in order
that they may act as retaining walls for the
banks, and it will then be safe to move the
cableway towers to any portion of the lower
locks. At present the banks in a number of
places are not considered sufficiently stable
to hold the towers.

The contractor who has in charge the man-
ufacture and erection of the lock gates expects
that the first shipment of material for the
gates will arrive on the Isthmus abdut April
1. Meanwhile, he is constructing and erecting
a bridge across the east lock of the upper
flight, and is at work on a similar bridge across
the west lock. Material for the gates will be
lowered into place by locomotive crane oper-
ating from these bridges. The bridges them-
selves are movable and will be used for erect-
ing all of the gates.



Gatun Dam and Spillway.
Gatun Dam is about 60 per cent completed.
An analysis of the wet and dry fill will be
found in "The Record of Canal Work" pub-
lished elsewhere in this issue. The fill in
place on March 1, was 13,848,000 cubic yards,
about equally divided between the wet and
dry, and almost two-thirds of this has been
placed during the past 14 months. In the
east half of the dam, the average height of the
earth toes is 77 feet above sea level. The
hydraulic fill is at plus 60 feet, and is being
allowed to dry out during the present dry
season. As the height of the dam increases