Primary outflows Green River Max. length 20 miles (32 km) Area 32.37 km² Catchment area 10,764 km² Outflow location Green River | Primary inflows Basin countries United States Surface area 8,000 acres (3,200 ha) Length 32.2 km Water volume 426 million m³ Inflow source Green River | |
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Fontenelle Reservoir is an artificial reservoir located in southwest Wyoming. It lies almost entirely within Lincoln County, although the east end of the Fontenelle Dam and a tiny portion of the reservoir are actually in northwestern Sweetwater County. Impounded by Fontenelle Dam, the reservoir acts primarily as a storage reservoir for the U.S. Bureau of Reclamation's Colorado River Storage Project, retaining Wyoming water in the state as a means of asserting Wyoming's water rights, with a secondary purpose of power generation. Water from Fontenelle Reservoir is used in local industries such as mining and power generation. Although initially projected to provide irrigation water for agriculture, the irrigation component was downgraded after difficulties with efficient irrigation in Wyoming's high semi-desert became apparent.
Map of Fontenelle Reservoir, Wyoming 83101, USA
Plagued by chronic leakage problems at the dam, the reservoir was hurriedly emptied in 1965 and 1986 amid concerns about dam failure. The reservoir has facilities for recreation, with boat launching ramps and campgrounds. Fishing is available for brown, cutthroat and rainbow trout.