Folsom Lake

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Folsom Lake
Lake Folsom.JPG
Location Northern California
Coordinates 38°43′14″N 121°08′02″W / 38.720605°N 121.133926°W / 38.720605; -121.133926Coordinates: 38°43′14″N 121°08′02″W / 38.720605°N 121.133926°W / 38.720605; -121.133926
Type Reservoir
Primary inflows American River
Primary outflows American River
Basin countries United States
Surface area 11,450 acres (4,630 ha)
Water volume 1,010,000 acre feet (1.25×109 m3)[1]
References [1]

Folsom Lake is a reservoir in Northern California about 25 mi (40 km) northeast of Sacramento in Placer, El Dorado, and Sacramento Counties. The lake is formed by Folsom Dam, constructed in 1955 to control the American River. The dam and lake are part of the Folsom Project, which also includes the Nimbus afterbay reservoir and dam facilities. The Folsom Project, operated by the United States Bureau of Reclamation, is part of the Central Valley Project, a multipurpose project that provides flood control, hydroelectricity, drinking water and water for irrigation. The Folsom Lake State Recreation Area is managed by the California Department of Parks and Recreation. When the dam was built it was designed to hold 1,010,000 acre feet (1,250,000 dam3) with a surface area of 11,450 acres (4,630 ha).[2]

During the drought of late 2013, part of the 2012–14 North American drought, the town known as "Mormon Island" reappeared 58 years after being submerged under Folsom Lake, with stone walls from some of the outlying areas being revealed by the shrinking lake.[3]

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Folsom Lake, pictured during a drought year, is less than 25% full