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Bay-Delta

The Sacramento-San Joaquin River Delta and San Francisco Bay collectively make up the "Bay-Delta." Much of the fresh water used for agriculture, municipal and industrial use in central and southern California passes through the Delta, where it is subjected to tidal forcing and other inputs that impact its quality. The USGS monitors the magnitude of the flows through the Delta, and the qua

USGS Science at Work in the San Francisco Bay Estuary

Side-looking acoustic Doppler velocity meter and water quality sonde

In an article written for the Interagency Ecological Program for the San Francisco Estuary, Dr. Paul Work and Dr. Maureen Downing-Kunz, of the California Water Science Center, provide examples of the work being done to measure water flow and quality.

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Topics Related to the Bay-Delta

See some of the other ways USGS science is at work in the San Francisco Bay and Sacramento-San Joaquin Delta.

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Longfin Smelt

Exploring Drivers of Pelagic Fish Population Decline in Bay-Delta

USGS scientists develop spatially explicit ecosystem model to explore changes pelagic fish species population and distribution in the Sacramento-San Joaquin Delta and Suisun Bay.
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California Water Science Center
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Exploring Drivers of Pelagic Fish Population Decline in Bay-Delta

USGS scientists develop spatially explicit ecosystem model to explore changes pelagic fish species population and distribution in the Sacramento-San Joaquin Delta and Suisun Bay.
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