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header image: Operation of Flaming Gorge Dam Environmental Impact Statement

Flaming Gorge Dam & Powerplant
Fact Sheet

*1995 data

Flaming Gorge Dam - History

Construction authorized April 11, 1956
First construction contract awarded (temporary access road) January 4, 1957
Prime contract awarded June 18, 1958
Diversion of Green River around damsite August 17, 1959
First bucket of concrete September 18, 1960
Last bucket of concrete November 15, 1962
Start of storage, Flaming Gorge Reservoir December 10, 1962
First power generated September 27, 1963
Last generator completed February 12, 1964
Dedicated by Mrs. Lyndon B. Johnson August 17, 1964

Flaming Gorge Dam

Height above bedrock 502 feet
Height above original river channel 455 feet
Maximum thickness 151 feet
Thickness at crest 27 feet
Crest length - (arch length at axis of dam) 1,285 feet
Volume of concrete (dam only) 986,644 cubic yards
Volume of concrete (Powerplant and miscellaneous) 54,843 cubic yards
Total concrete 1,041,487 cubic yards
Cost of dam and reservoir $49,600,000
Cost of powerplant and switchyard, movabale property, structures, etc., of which 96 percent will be repaid to the U.S. Treasury from the sale of power (76 percent of total with interest) 65,300,000

Flaming Gorge Dam Excavation

Total: 1,023,971 cubic yards of rock and sand including 1,775 feet of tunnels, 60 feet (maximum) below original river channel

Flaming Gorge Powerplant

Dimensions 219 feet long
60 feet wide
94 feet high
Generating units 3
Capability/unit at rated head 50,650 kW
Plant peak to date 134,000 kW
Firstt unit on line November 11, 1963
Last unit on line February 12, 1964

Flaming Gorge Reservoir

Capacity, full (6,040 feet total) 3,788,700 acre-feet
Capacity, active 3,749,000 acre-feet
Depth of water at dam (when full) 436 feet
Miles of shoreline (when full) 375 miles


Utah record brown trout caught march 4, 1977 - 33 lbs. 10 oz.
Utah record rainbow trout caught April 7, 1979 - 26 lbs. 2 oz.
Utah record lake trout caught 1988 - 51 lbs. 8 oz.
Utah record kokanee salmon caught 1984 - 5 lbs. 5 oz

The Bureau of Reclamation administers the operation and maintenance of the Flaming Gorge Dam, Powerplant, and Reservoir. The U.S. Forest Service administers the recreational facilities of the Flaming Gorge National Recreation Area. That agency operates the Flaming Gorge Visitor Center in cooperation with the Bureau of Reclmation. The Forest Service has primary responsibility for developing the commercial area of Dutch John, Utah.


Last updated: January 22, 2007