Rear Drum Gate
Washington State University Libraries
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Rear Drum Gate
The primary purpose of the drum gates is to permit the raising of the reservoir level by any desired amount from the lowered crest elevation to maximum of 28 feet. It was the fact that, in addition to a considerable increase in storage capacity, this added height allowed a decrease by 12% the flow required thru the turbines to maintain the units at their rated capacity, which made this movable crest so desirable from the standpoint of flood control and water economy, as well as dollars and...
Part of Western Waters Digital Library: http://harvester.lib.utah.edu/wwdl/; Photographer Unknown
Clifford R. Koester
Spillways--Washington (State)--Grand Coulee Dam; Hydraulic gates--Washington (State)--Grand Coulee Dam; Flood control--Washington (State)--Grand Coulee Dam; Steel--Welding; Diversion structures (Hydraulic engineering)--Design and construction--Columbia River
Spillways--Washington--Grand Coulee Dam
United States--Washington (State)--Grant County--Grand Coulee Dam site, Grand Coulee Dam (Wash.)
Manuscripts, Archives, and Special Collections, Washington State University Libraries: http://www.wsulibs.wsu.edu/holland/masc/masc.htm
A History of the Columbia Basin Project (Vol. 3, Page 280)-Cage 709: Clifford R. Koester Papers, 1927-1972: http://www.wsulibs.wsu.edu/holland/masc/finders/cg709.htm
To order a reproduction please see: http://www.wsulibs.wsu.edu/holland/masc/policies.htm , or contact Washington State University Libraries, Manuscripts, Archives, and Special Collections: (509) 335-6691.
For permission to publish please contact Washington State University Libraries, Manuscripts, Archives, and Special Collections: (509) 335-6691.
Original photographic prints were scanned at 24 bit 3000 pixels by the long side for master TIFF files on an Plustek OpticBook 3600 Plus. Also, 24 bit 150 PPI JPEGs were created with the OpticBook 3600 Plus and added to the CONTENTdm database at the WSU Libraries