Digital elevation model (DEM) of northern San Francisco Bay, California, created using bathymetry data collected between 1999 and 2016 (MLLW)
Public domain.
<a rel="nofollow" class="external text" href="https://www.usgs.gov/media/images/bathymetric-map-northern-portion-san-francisco-bay-mllw">U.S. Geological Survey</a>