Water from the delta is diverted to areas throughout the state

Water from the Sacramento and San Joaquin rivers flows through the delta, where some of it flows out to sea through the Suisun Marsh and San Francisco Bay, and some of it is exported to other areas of the state.

Delta watershed
Delta and Suisun Marsh
Out-of-basin importers

Hydrologic regions

Map shows areas of the San Francisco Bay, Central California and Southern California where delta water is imported

North

Coast

North

Lahontan

Sacramento

River

San Francisco

Bay

San Joaquin

River

Central

Coast

Tulare Lake

South

Lahontan

Colorado

River

South

Coast

Delta watershed
Delta and Suisun Marsh
Out-of-basin importers

Some areas of the San Joaquin River hydrologic region also import water from the delta.

PPIC Water Policy Center

Sean Greene LOS ANGELES TIMES