Cachuma Lake is a reservoir in the Santa Ynez Valley of central Santa Barbara County, California on the Santa Ynez River adjoining the north side of California State Route 154.
The artificial lake was created by the construction of Bradbury Dam, a 201 ft (61 m) earth-fill structure built by the U.S. Bureau of Reclamation in 1953. Its surface area covers 3,100 acres (1,300 ha), with a maximum design capacity of 205,000 acre⋅ft (253,000,000 m3), but it is currently limited to 188,000 acre⋅ft (232,000,000 m3) due to sediment accumulation.
