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Show ONE HUNDRED YEARS OF WATER DEVELOPMENT 69 deficiencies of another, and thus tends to insure the annual yield of 100,000 acre feet. PHYSICAL FEATURES Deer Creek Dam The Deer Creek dam, construction of which is complete, is located in Provo Canyon, about 17 miles northeast of Provo City. It will store 150,000 acre feet of water. It rises 155 feet above stream bed, and extends 1300 feet between the canyon walls at the crest elevation. It is 1000 feet wide at the base and about 35 feet wide at the roadway level. It contains about 3,000,- 000 cubic yads of earth and rock. The Deer Creek dam is the third largest earth- fill dam to be built by the Bureau of Reclamation. The only larger dams of this type are the Green Mountain Dam ( 4,336,000 cubic yards) of the Colorado- Big Thompson project, and the Vallecito Dam ( 3,445,000 cubic yards) of the Pine River Project, both in Colorado. A concrete cutoff wall, with its footing extending to bedrock, 240 feet below the crest of the dam, has been constructed under the upstream portion. A similar wall is under the axis of the dam and is anchored into the abutments and the dam foundation. During construction operations the Provo River was diverted through a concrete lined tunnel piercing the solid rock of the left abutment. The tunnel now serves as the main outlet for storage water from the reservoir. The outlet works consist of a trash- rack structure leading to a 12- foot diameter circular tunnel 441 feet long; a transition section 52 feet long approximately midway to the tunnel length, in which there have been installed two 5- foot by 6- foot high- pressure slide gates, operated by hydraulically oper- 82. A distant view, upstream, of the Deer Creek dam. In the foreground are tracks of the Denver & Rio Grande Western Railroad which formerly traversed the floor of the canyon. The old highway may also be seen on the canyon floor. This photograph was taken from the new highway, which will divert traffic directly over the top of the dam. L. Clyde Anderson |
