Produced by Stephen Hutcheson and the Online Distributed Proofreading Team at http://www.pgdp.net U.S. DEPARTMENT OF THE INTERIOR, STEWART L. UDALL, Secretary Bureau of Reclamation, Floyd E. Dominy, Commissioner GLEN CANYON DAM PHYSICAL DATA—GLEN CANYON STORAGE UNIT DAM Type: Concrete arch. Height above river bed _ft._ 580 Height above lowest _ft._ 710 point in foundation Crest length _ft._ 1,500 Crest width _ft._ 25 Base width _ft._ 340 Concrete _cu. 4,830,000 yds._ (dam) (powerplant) 275,000 There are 3¼ million cu. yds. in Hoover Dam, and 10½ million in Grand Coulee. Crest elevation _ft._ 3,715 Maximum discharge _sec. ft._ 276,000 through spillways RESERVOIR Capacity. _ac. ft._ 28,040,000 Area _acres_ 162,700 Elevation reservoir _ft._ 3,700 water surface The river elevation at Glen Canyon is 3,142 ft. Length. _miles_ 186 POWERPLANT Capacity _kw._ 900,000 Number of units 8 Capacity of each _kw._ 112,500 generator. Capacity of each turbine _hp._ 155,500 [Illustration: THE PROJECT AND THE DAM] GLEN CANYON FLORIDA PINE RIVER EXT NAVAJO HAMMOND LA BARGE SEEDSKADEE LYMAN FLAMING GORGE CENTRAL UTAH EMERY COUNTY SILT PAONIA SMITH FORK CURECANTI The Glen Canyon Dam, Powerplant, and Reservoir, which will be known as Lake Powell in honor of the western explorer and geologist, John Wesley Powell, are the principal storage and power features of the Upper Colorado River Storage project. The dam will be on the Colorado River in Arizona, 13 river miles below the Utah border. Lake Powell will store about 28,000,000 acre feet of water—next in size to Lake Mead, downstream, America’s largest man-made lake—to help solve a water resource development problem in the Colorado River Basin.