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Folsom Dam is a concrete gravity dam on the American River of Northern California in the United States, about 25 mi (40 km) northeast of Sacramento. The dam is 340 ft (100 m) high and 1,400 ft (430 m) long, flanked by earthen wing dams.
Old Folsom Dam Region near Folsom Prison below Existing Dam. The water for the original Folsom hydroelectric plant was obtained from a diversion dam, 650 feet (200 m) long, 24 feet (7.3 m) wide at the top; 87 feet (27 m) wide at the bottom and 89 feet (27 m) tall, across the American River built in the 1890s. The dam diverted a large stream of ...
An aerial view of Folsom Dam on March 10. (Jonathan Wong / California Department of Water Resources) As of Tuesday, Folsom Lake was at 63% of its capacity, in line with the historical average level.
When the dam was built, it was designed to hold 976,000 acre-feet (1,204,000 dam 3) with a surface area of 11,450 acres (4,630 ha). [2] The dam is 1400 feet wide and 340 feet high. It is a concrete structure with approximately 9 miles of earth fill wing dams and dikes supporting its surrounding areas.
St. Francis Dam (1926–1928) - failed March 12, 1928 San Clemente Dam - intentionally removed in 2015-2016 because of environmental issues Van Norman Dams (1911–1971) - failed February 9, 1971, in 1971 San Fernando earthquake
Major flooding of the Sacramento area led to calls for a large dam on the American River by the late 19th century. During the 20th century, the American River was extensively developed for flood control, hydroelectricity production and irrigation. Folsom Dam is the primary flood-control facility for Sacramento. The numerous hydroelectric dams ...
The Folsom Dam is located on the American River, and stores 1,010,000 acre-feet (1,250,000 dam 3) of water in its reservoir, Folsom Lake. Folsom Lake covers 11,550 acres (4,670 ha) and is located inside the Folsom Lake State Recreational Area. [572] Eight additional earth fill saddle dams are required to keep the reservoir from overflowing.
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