The State Water Project has helped
The SWP’s main purposes are to provide water storage and delivery. Its
supply comes mainly from rainfall, snowmelt runoff, and excess flows in the
Delta during wet years.
SWP water is delivered to contracting agencies in Northern California, the
resources for most of these agencies.
State Water Project is a water storage and delivery system of reservoirs,
aqueducts, powerplants and pumping plants. Its main purpose is to store water
and distribute it to 29 urban and agricultural water suppliers in Northern
California, the San Francisco Bay Area, the
water supply, 70 percent goes to urban users and 30 percent goes to
The Project makes deliveries to two-thirds of
and operated by the California Department of Water Resources.
The Project is also operated to improve water quality in the Delta, control
recreation, and enhance fish and wildlife.
Today, the Project includes 32 storage facilities, reservoirs and lakes; 17
pumping plants; 3 pumping-generating plants; 5 hydroelectric power plants; and
about 660 miles of open canals and pipelines.
The Project provides supplemental water to approximately 20 million
Californians and about 660,000 acres of irrigated farmland.
California Department of Water Resources