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.
North
Coast
North
Lahontan
Sacramento
River
San Francisco
Bay
San Joaquin
River
Central
Coast
Tulare Lake
South
Lahontan
Colorado
River
South
Coast
Some areas of the San Joaquin River hydrologic region also import water from the delta.
Sean Greene LOS ANGELES TIMES