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2026 - 2050 of 2123 Items << < 77 78 79 80 81 82 83 84 85 > >>
2026 - 2050 of 2123 Items << < 77 78 79 80 81 82 83 84 85 > >>
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A temporary restraining weir or rack across the Wenatchee River at the head of Tumwater Canyon. This rack prevents transplanted salmon from swimming downstream and returning to their old spawning grounds.
1939-07-26
2024-11-22 |
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The upper portion of a ring follower emergency gate in a chamber of the elevation 950 gallery. The hydraulically operated gate closes or opens a 102-inch diameter outlet conduit 16 feet below at elevation 934.
1939-08-04
2024-11-22 |
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General map of Columbia River Watershed including Washington, Montana, and British Columbia
1905-04-17
2024-11-22 |
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All artificial spawning of Salmon is conducted at Leavenworth Station, and Koester estimates that they handle on average 40 million eggs each year. One of the most interesting aspects of construction of the fish hatchery was the 2,500 foot rock...
2024-11-22
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Electric power requirements for irrigation pumping on potential projects--Columbia River basin
Pumping plant
Pumping plant or project
Location
Acreage served
Installed capacity (kilowatts)
Annual power requirements (1,000...
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Lake, a 27-mile long irrigation reservoir. 30 Irrigation works take the water from there. The project first began irrigating fields in 1951. 31 It now irrigates about 560,000 acres with canals as big as rivers. It has a huge drainage system to...
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The river was uniquely suited to hydropower production, however. It is a relatively steep river, dropping an average of about two feet per mile (compared to Mississippi's six inches per mile). It flows in a solid rock channel suitable for dam...
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PUMPED-STORAGE PROJECTS IN THE UNITED STATES
EXISTING, UNDER CONSTRUCTION, AND PLANNED
No. and type of sets
Station
Head (m)
Manufacturers
Speed (rpm)
Generator
Turbine
Flow (m3/s)
Head (m)
Generating
Station capacity (MW)...
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In no other subdivision is there greater opportunity to use water resources in broadening the agricultural and industrial bases of the economy. Although much the greater proportion of the land that can be irrigated with waters of tributary streams...
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Image captions: Working around-the-clock at Grand Coulee, 1938
Lowering the rotor for the generator, Grand Coulee Dam, 1948.
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stop injury to the public grazing lands by preventing overgrazing and soil deterioration; to provide for their orderly use, improvement, and development; to stabilize the livestock industry dependent upon the public range; and for other purposes,"...
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Image captions: Grand Coulee Dam
Photo Credit, Bureau of Reclamation
Foundation for the powerhouses (top and bottom) and the spillways (middle) takes shape, 1938.
Removing fractured rock for the foundation of Grand Coulee, 1936.
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Photographs, correspondence, press
clippings, issues of "Bo's'n's Whistle", and ephemera relating to the
activities of Charles P. Harman, an engineer originally from Montana who worked
for the Kaiser Company in Portland, Oregon, for...
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Specifications No. 2329. Picture Series 18532-3 through 18537-3. Morrison-Knudsen Co., Inc., and Peter Kiewit Sons' Co., subcontractor, Consolidated Western Steel Corp., Electric City Yard. A view of the process of mounting the stiffener rings on...
1949-03-01
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Source
SI—3, 63, 64, 78 PI—15, 50 WI—23, 30, 39
Tentative—Disposition 1/
A
Problem or Area of Concern
1. Indian rights and interests in the Columbia River and its Tributaries are substantial. For example, Colville Indians have...
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Reduction of supplies of wood waste, for reasons previously noted, and measures to conserve fuel oil will encourage replacement of such generating plants, and the low-cost hydroelectric power of the region may be expected progressively to displace...
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On verso of image: The W.P.A. tugboats "Nespelem" and "Wellpinit" under construction at the Camp Spokane shipyard on the Spokane River. May 27, 1940
2024-11-22
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Terrazzo machine man applying linseed oil and turpentine to floor and base of Unit L-1, elevation 991, West Powerhouse. This oil is floated for at least six hours before being removed.
1949-03-25
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A study of the fishery problems raised by the construction of the Grand Coulee Dam on the upper Columbia River was done. Part of the study was to estimate the number of salmon taken in commercial fishery for the purpose of comparing this with the...
1940 (iso8601)
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Northwest might be called upon for a supreme effort because of unsettled conditions throughout the world.
In his first annual report to Congress, Administrator Ross clearly expressed this feeling:
"Modern warfare is fought in the factory as...
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The Columbia River has a similar history. Hatcheries and other technologies were offered as the antidote to dams. When Grand Coulee blocked salmon from the Columbia's upper reaches, upper basin fish stocks were transplanted to hatcheries below the...
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