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The drum gate is hinged on castings anchored along the upstream side of a recess in the spillway crest. In the lowered or open position, the drum gate rests in the recess or chamber with its upper or upstream side forming the smooth curve of the...
2024-11-24 |
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A crew of skilled mechanics work on the alignment of the anchor hinge castings for one of the huge drum gates. There are 40 of these hinges required for each gate.
1940-11-30
2024-11-24 |
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Assembling the structural steel in the end section of a drum gate.
1940-12-05
2024-11-24 |
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Erection in progress on drum gate No. 1. When fully assembled, the Grand Coulee drum gates are 135 feet long 28 feet high and weigh 735 tons.
1940-12-05
2024-11-24 |
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Erection of the downstream skin plates on drum gate No. 1.
1940-12-07
2024-11-24 |
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A ring seal gate casting is lowered into position during the installation of the 102-inch diameter outlet works at el. 1136 in the spillway section of the dam.
2024-11-24
2024-11-24 |
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Ring seal gate castings for the 102-inch diameter outlet works at el. 1136.
1940-02-29
2024-11-24 |
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The first of 12 pump inlet pipes is set to line and grade at the pumping plant foundation.
1940-02-12
2024-11-24 |
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A big pump inlet pipe is lowered to temporary timber cribbing. When the pipe is blocked to final line and grade, steel struts and ties will replace timber cribbing.
1940-02-12
2024-11-24 |
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An 18-foot diameter penstock liner section is delivered to the left powerhouse. The crane will lift the big steel pipe from the railroad car and lower it into a turbine pit for installation in one of the nine penstock tunnels.
1940-02-12
2024-11-24 |
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An 18-foot diameter penstock liner section ready to be installed in one of the nine penstock tunnels of the left group.
1940-02-20
2024-11-24 |
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The Leavenworth migratory fish control station and surrounding lands. The prominent body of water is the Icicle Creek diversion canal which suppliers water to the holding ponds. To the right of the canal and partially obscured by trees are the...
1940-09-12
2024-11-24 |
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Salmon eggs in the Leavenworth hatchery. A workman removes the dead or infertile eggs.
1940-09-11
2024-11-24 |
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Permanent buildings of the Leavenworth migratory fish control station with concrete rearing ponds in the foreground.
1940-10-25
2024-11-24 |
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Hatchery troughs in the Leavenworth hatchery building.
1940-05-09
2024-11-24 |
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Snow Lakes, high in the Cascade Mountains, are used to supplement the flow of Icicle Creek, which supplies the holding ponds at the Leavenworth fish hatchery.
2024-11-24 |
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Concrete portion of the Wenatchee canal for supplying Wenatchee river water to the Leavenworth station.
1940-05-09
2024-11-24 |
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The diversion canal at the Leavenworth hatchery station. Excess Icicle Creek water which cannot be passed through the holding ponds is bypassed through this canal.
1940-05-08
2024-11-24 |
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Construction in progress on the Entiat hatchery on the Entiat River.
1940-09-19
2024-11-24 |
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The Winthrop hatchery station on the Methow River. When completed, this station will be one of the tributary hatcheries to which the small fingerling salmon will be transferred from the Leavenworth hatchery.
1940-11-13
2024-11-24 |
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Clearing operations in progress in the Columbia River Reservoir area by W.P.A. crew. Stumps and logs too small to be sold are pushed into pits and burned.
1940-12-12
2024-11-24 |
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The Columbia River Reservoir backs up into the San Poil Valley.
1940-05-31
2024-11-24 |
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W.P.A Camp Gerome on the shores of the Columbia 61 1/2 miles above the dam.
1940-03-27
2024-11-24 |
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W.P.A Camp Gifford on the shores of the Columbia 84 1/2 miles above the dam.
1940-03-27
2024-11-24 |
