Historical Atlas of Tidal Creeks, San Francisco Bay, California

by Kent G. Dedrick,
Linda T. Chu,



Document Type: Proceeding Paper

Part of: Coastal Zone '93

Abstract:

Historic widths and depths of 69 major tidal creeks in San Francisco Bay were studied from maps dated from 1852 to the 1980's. Survey maps by the U.S. Coast Survey (and successors, U.S. Coast & Geodetic Survey, and now the National Ocean Service) were the primary source materials used. It was found that most of tidal creeks suffered major decreases in width and depth; a large fraction had been dammed, and no longer serve as waterways supporting small craft navigation, or as habitat and nursery areas for fish and waterfowl. Mechanisms that could have led to the degradation of these waterways are suggested. Results are given in a series of tables that provide historical data on these creeks, and are useful in baylands habitat and aquatic recreation analyses, and as baseline data for future of these resources.

Subject Headings: Rivers and streams | Tides | Mapping | Geodetic surveys | Wetlands (coastal) | Waterways | Data analysis | California | United States

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