Lake Berryessa is the largest lake in Napa County, California, United States. This reservoir in the Vaca Mountains was formed following the construction of the Monticello Dam on Putah Creek in the 1950s. Since the early 1960s, this reservoir has provided water and hydroelectricity to the North Bay region of the San Francisco Bay Area.
Location: Vaca Mountains · Napa County, California
Primary inflows: Putah Creek, Pope Creek, Capell Creek, Eticuera Creek
Primary outflows: Putah Creek
Catchment area: 576 sq mi (1,490 km²)
Basin countries: United States
Managing agency: United States Bureau of Reclamation
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