- Monticello Dam
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Monticello Dam 
Location Napa County, California, U.S. Coordinates 38°30′48″N 122°06′15″W / 38.5133°N 122.1042°WCoordinates: 38°30′48″N 122°06′15″W / 38.5133°N 122.1042°W Construction began 1953 Opening date 1957 Dam and spillways Height 304 ft (93 m) Length 1,023 ft (312 m) Base width 100 ft (30 m) Impounds Putah Creek Reservoir Creates Lake Berryessa Capacity 1,602,000 acre·ft (1.976×109 m3) Catchment area 566 sq mi (1,470 km2)[1] Surface area 20,700 acres (8,400 ha) U.S. Geological Survey Geographic Names Information System: Monticello Dam Monticello Dam is a dam in Napa County, California, United States constructed between 1953 and 1957. It is a medium concrete-arch dam with a structural height of 304 ft (93 m) and a crest length of 1,023 ft (312 m). It contains 326,000 cubic yards (249,000 m³) of concrete. The dam impounded Putah Creek to cover the former town of Monticello and flood Berryessa Valley to create Lake Berryessa, then the second-largest man-made lake in California. The capacity of the reservoir is 1,602,000 acre·ft (1.976×109 m3).[1] Water from the reservoir primarily supplies agriculture in surrounding areas. The dam is noted for its classic, uncontrolled morning-glory type spillway.[1] The diameter at the lip is 72 ft (22 m). Locally, the spillway is also known as 'The Glory Hole'. [2]
The Monticello Dam Powerplant was built at the dam in 1983 and has three generators. The electrical power is sent mostly to the North Bay area of San Francisco.
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The outside of the dam
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Spillway as seen on Saturday, October 10, 2009. In this picture, the water level is at 407.72 feet (124.27 m), or 32.24 feet (9.83 m) below the crest.
References
- Solano Project (U.S. Bureau of Reclamation)
- Monticello Dam (U.S. Bureau of Reclamation)
External links
Categories:- Buildings and structures in the San Francisco Bay Area
- Dams in California
- Buildings and structures in Napa County, California
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