... 2,300 acres at the maximum water-surface elevation of 1,570, eliminates the necessity for a very expensive canal along the steep walls of the Grand Coulee and saves the loss of about 47 feet in the elevation of the water surface at the south end of...
O'Sullivan Dam: Constructed 1947-1949 - Page 2
by United States. Bureau of Reclamation - 1954 - 61 pages
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