In 1960, California voters approved financing for construction of
the initial features of the State Water Project (SWP).
The project includes some 22 dams and reservoirs, a Delta
pumping plant, a 444-mile-long aqueduct that carries water
from the Delta through the San Joaquin Valley to
Southern California.
The 1,440-mile-long Colorado
River passes through parts of seven states, several Indian
reservations and the Republic of Mexico.
California is entitled to 4.4 million acre-feet of water annually
from river.