U.S. Geological Survey
Open-File Report 98-139
Version 1.0

Multibeam Data and Socio-Economic Issues in West-Central San Francisco Bay

Sediment Transport

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The distribution of sediment types that cover the bayfloor and the patterns and rates of transport of these materials are important factors in all of the issues discussed. The sediment thickness map, calculated from a depth to bedrock map (Carlson and McCulloch, 1970) derived from acoustic profiles acquired in the 1960s and from the new multibeam bathymetry, shows that more than 90 meters (295 feet) of sediment covers parts of the west-central San Francisco Bay area.