Monticello Dam

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An aerial view of the dam

The outside of the dam

View of spillway

Monticello Dam is a dam in Napa County, California, United States (located at 38°30′48.48″N, 122°06′15.81″W).

1 Description
2 Reservoir
3 Electrical power
4 Spillway
5 External links

[edit] Description

Monticello Dam was constructed between 1953 and 1957. The dam is a medium concrete-arch dam with a structural height of 304 ft (93 m) and a crest length of 1023 ft (312 m). It contains 326,000 cubic yards (249,000 m³) of concrete.

[edit] Reservoir

The dam impounds Putah Creek to form Lake Berryessa, the second-largest lake in California. The capacity of the reservoir is 1.602 million acre-feet (1.98 km³). Water from the reservoir is supplied mostly to the North Bay area of San Francisco.

[edit] Electrical power

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.

[edit] Spillway

The dam is notable for its classic, uncontrolled spillway with a rate of 48,400 cubic feet per second (1370 m³/s) and a diameter at the lip of 72 feet (22 m). The eerie appearance of the spillway in operation attracts visitors.