California Aqueduct

The California Aqueduct, formally the Governor Edmund G. Brown California Aqueduct, is a system of canals, tunnels and pipelines that carries water collected from the Sierra Nevada and the valleys of Northern and Central California to Southern California, and is the principal feature of the California State Water Project. Named for Governor Edmund Gerald Pat Brown Sr., the aqueduct runs more than four hundred miles from the Clifton Court Forebay at the southwestern corner of the Sacramento San Joaquin River Delta before splitting into a Coastal Branch ending at Lake Cachuma, a West Branch reaching Castaic Lake, and an East Branch connecting to Silverwood Lake. California's Department of Water Resources operates the aqueduct, including the Gianelli pumped storage power plant at the base of San Luis Dam, which forms the largest offstream reservoir in the United States. Land along the aqueduct has steadily subsided since construction.