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Harnessing the Snake: A Construction Viewpoint

by Thomas C. Noonan, M.A. Mortenson Co, United States,
Don E. Smith, M.A. Mortenson Co, United States,
Steve Harrison, M.A. Mortenson Co, United States,
Mark Gendron, M.A. Mortenson Co, United States,



Document Type: Proceeding Paper

Part of: Waterpower '89

Abstract:

The Gem State Hydroelectric Project, five miles south of Idaho Falls, Idaho on the Snake River, consists of a 900-foot-long, 40-foot-high dam; approximately four miles of earthend dikes; a five-gate spillway; and a concrete powerhouse with a 23.4-megawatt Hitachi Kaplan turbine and generator. General construction on the project began in the fall of 1986, continued for 24 months and was completed October 17, 1988. CH₂M Hill of Boise, Idaho designed the project; M.A. Mortenson Company of Minneapolis, Minnesota acted as general contractor. During the 24 months of construction, the contractor was faced with several interesting and unusual situations requiring special construction techniques. Several of these are discussed.

Subject Headings: Hydro power | Rivers and streams | Power plants | Project management | Construction methods | Spillways | Occupational safety | United States | Idaho | Minnesota

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