These data represent critical habitat designated (June 16, 1993, 58 FR 33212) under the Endangered Species Act for the Sacramento River winter-run Chinook salmon ESU.

The official NMFS critical habitat dataset for this Chinook salmon (SalmonChinook_SacramentoRiverwinterrunESU_19930616) is comprised of both river/stream (line) data and estuary (polygon) data; together the polygons and lines represent the entire final critical habitat designation.

The following waterways, bottom and water of the waterways and adjacent riparian zones: The Sacramento River from Keswick Dam, Shasta County (River Mile 302) to Chipps Island (River Mile 0) at the westward margin of the Sacramento-San Joaquin Delta, all waters from Chipps Island westward to Carquinez Bridge, including Honker Bay, Grizzly Bay, Suisun Bay, and Carquinez Strait, all waters of San Pablo Bay westward of the Carquinez Bridge, and all waters of San Francisco Bay (north of the San Francisco/Oakland Bay Bridge) from San Pablo Bay to the Golden Gate Bridge. Adjacent riparian zones are those areas above a streambank that provide cover and shade to the nearshore aquatic areas. This designation does not include any estuarine sloughs.