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Bathymetric change of San Pablo Bay, California: 1983 to 2015


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Fregoso, T.A., Jaffe, B.E., and Foxgrover, A.C., 2023, Bathymetric change analysis in San Francisco Bay, California, from 1971 to 2020: U.S. Geological Survey data release,


This 25-m-resolution surface presents bathymetric change of San Pablo Bay, California, from 1983 to 2015. This surface compares a 1-m-resolution digital elevation model (DEM) of the northern portion of San Francisco Bay (Fregoso and others, 2020), comprised of bathymetry data in the San Pablo Bay region from the time period referred to as the 2010s because the majority of the surveys were in that decade, to a 25-m-resolution bathymetric DEM of San Pablo Bay comprised of historic surveys from 1983 to 1986 (referred to as the 1980s because the majority of the surveys were in that decade). The creation of this change surface involved the resampling of the 1-m-resolution 2010s DEM to match the 25-m-resolution of the 1980s DEM.


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“Map showing bathymetric change of San Pablo Bay, from 1983 to 2015, in meters .”
thumbnail 2.62 MB image/jpeg 3.86 MB application/zip


These data are part of a sediment change analysis project of San Francisco Bay to understand current patterns of sediment gains and loss in efforts to help develop a sediment budget. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems (GIS) or other software to identify changes in elevations between the two time periods. These data are not intended to be used for navigational purposes.

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