National Wetlands Inventory Mapping for San Francisco Bay/Delta Area, California

by Dennis D. Peters, USFWS, Portland, OR, USA,
James A. Bohn, USFWS, Portland, OR, USA,



Document Type: Proceeding Paper

Part of: Coastal Zone '87

Abstract: The U. S. Fish and Wildlife Service's National Wetlands Inventory Project (NWI) completed wetland mapping in 1982-83 for the San Francisco Bay/Delta area of California using mid-1970's summer, high level color infrared aerial photography. New NWI wetland maps have been prepared using 1985, spring, color infrared, 1:65,000 scale aerial photography. In addition, mid-1950's aerial photography (black and white, at about a 1:24,000 scale) was used to produce 1950's era wetland maps for the south San Francisco Bay area. For south San Francisco Bay eighteen NWI wetland maps are published for each of the three years. For the north bay area 24 NWI wetland maps are published for each of two years. 62 NWI 1985 wetland maps are published for the Sacramento/San Joaquin Delta and areas adjacent to San Francisco Bay. Wetland information is entered into a computerized geographical information system providing a digital data base from which wetland maps and acreage data showing historical wetland changes can be generated.

Subject Headings: Wetlands (coastal) | Mapping | Inventories | Information systems | Aerial photography | Bays | Geographic information systems | Computer software | North America | California | United States | San Francisco Bay Area

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