San Justo Dam

San Justo Dam is a dam and reservoir in San Benito County, California, about 3 mi southwest of Hollister. The dam provides offstream water storage for the federal Central Valley Project via the Pacheco Conduit and Hollister Conduit fed by the San Luis Reservoir.

Completed in January 1986, the dam is an earthfill structure 151 ft high. Along with a companion dike structure 79 ft high, it forms a reservoir with a capacity of about 9,785 acre-ft.

San Justo Reservoir [CLOSED] was closed in 2008, following a Zebra mussel infection and remains closed until further notice.