SDE Feature Class
Environment, Location, Oceans, O. tshawytscha, California, Fish, Salmonid, Evolutionary Significant Unit (ESU), Oncorhynchus tshawytscha, Distribution, Central Valley Spring-run ESU, Biota, Inland Waters, Habitat, Rivers, CA, Chinook, California Central Valley, Critical Habitat
This layer was created to depict Critical Habitat for Chinook in the Central Valley Spring-run ESU. The layer represents areas designated for Critical Habitat and the habitat quality in the region. It is best suited for mapping those properties in the aforementioned region. For a complete description of the NOAA Fisheries Critical Habitat Designation project and for links to the final report, frequently asked questions, and other project documents, please visit: http://www.nwr.noaa.gov/1salmon/salmesa/crithab/CHsite.htm .
This layer depicts areas designated for Chinook Critical Habitat as well as habitat type and quality in the Central Valley Spring-run Evolutionary Significant Unit (ESU - a "distinct population" of Pacific salmon defined as a "species" under the Endangered Species Act). These data represent the stream segments identified as Critical Habitat by the National Marine Fisheries Service (NOAA Fisheries) Southwest Regional Office (SWR). The linework for this layer is based on the California Department of Fish and Game (CDFG) and Pacific States Marine Fisheries Commission (PSMFC) 1:100,000 scale stream based routed hydrography. SWR biologists divided the routed hydrography into stream segments using the best available information to represent local Chinook distribution and habitat. As a result, each segment has its own unique identifier (GIS_Link) and related presence and habitat information. The data set is in shapefile format and can be included as a map layer in a GIS. This data set is an updated, final version of 'CVSR_Chinook_Proposed_Critical_Habitat'. This GIS layer is part of a larger mapping effort to define the anadromous distribution and to designate critical habitat in five steelhead ESU's and two Chinook ESU's in California. Several NOAA Fisheries offices participated in this effort. As a result, although the same issues were addressed within each ESU, the offices chose differing approaches to define and populate the habitat attributes. The consequence is that there are some slight differences in the attribute tables between the coastal ESUs and the Central Valley ESUs. For a complete description of the NOAA Fisheries Critical Habitat Designation project and for links to the final report, frequently asked questions, and other project documents, please visit: http://www.nwr.noaa.gov/1salmon/salmesa/crithab/CHsite.htm .
Data layers from the following were used as basemap layers or as detailed in the 'Process Description' section during the designation process: California Department of Fish and Game, Pacific States Marine Fisheries Commission,California Geospatial Information Data Library, State Coastal Conservancy, California Department of Forestry, US Geological Survey
There are no access and use limitations for this item.