The California State Water Project (SWP) comprises more than 700 miles of aqueducts, tunnels, siphons, and pipelines as well as 34 storage facilities, 30 dams, 23 pumping plants, and 9 hydroelectric power generation plants. In addition to providing Californians with a reliable supply of clean water, the SWP and its facilities provide many other benefits including flood control, power, recreation, wildlife habitat, and more.
California Aqueduct

A spring evening over the California Aqueduct in the San Joaquin Valley.

The California Aqueduct is the primary method of transporting water from Northern California to Southern California. The concrete-lined canal winds its way through the Central Valley, moving water from the Clifton Court Forebay in the Sacramento-San Joaquin Delta down to Lake Perris, the SWP’s southernmost reservoir. Water travels by gravity until it is lifted by pumping plants and then continues its journey south by gravity until the next pumping plant.

At the Tehachapi Mountains, water is lifted 1,926 feet by fourteen 80,000 horsepower pumps at Edmonston Pumping Plant. The Edmonston Pumping Plant is the highest single-lift pumping plant in the world. From the Tehachapi crossing, water flows into Antelope Valley, where the aqueduct divides into the West Branch and East Branch of the Aqueduct.
These are the State Water Project’s primary dams:

Cedar Springs Dam and Silverwood Lake, part of the State Water Project, are located in the San Bernardino National Forest.

Power Plant Locations
Pumping Plants Locations
These are the primary storage facilities for the State Water Project

The San Luis Reservoir reached 98 percent of total capacity and 110 percent of historical average in March 2017. DWR/2017

Related Pages