Bay-Delta
The Sacramento-San Joaquin River Delta and San Francisco Bay make up the "Bay-Delta.” The USGS monitors flow, water quality, and other dynamics in the Bay-Delta system. Data are gathered and reported in a variety of ways including sediment sampling, mapping surveys, and data collected every 15 minutes at stationary monitoring sites.
USGS Science at Work in the San Francisco Bay Estuary
![Side-looking acoustic Doppler velocity meter and water quality sonde](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/info_block/public/thumbnails/image/fig3-side-looking-doppler.jpg?itok=ndeVOdt_)
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.
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.