California Coastal Chinook Salmon Distribution

This layer was created to aid SWR biologists in establishing Critical Habitat for Chinook in the California Coastal ESU. The layer represents an approximation of Chinook occupancy and habitat quality in the region and is best suited for mapping those properties in the aforementioned region.

'CC_Chinook_Distribution_06_2005' depicts Chinook presence as well as habitat type and quality in the California Coastal Evolutionary Significant Unit (ESU). The data was compiled by the National Marine Fisheries Service (NOAA Fisheries) Southwest Regional Office (SWR) in an effort to designate Critical Habitat for Chinook in California. 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 update of 'CC_Chinook_Draft_2004'. It is found only in the Northern Region of California.

Data and Resources

Additional Info

Field Value
Last Updated January 17, 2025, 06:42 (UTC)
Created January 17, 2025, 06:42 (UTC)
category /Biodiversity Conservation/Focal Species/Fish
collection_name California Landscape Metrics
creation_method Stream segments were identified and assigned attributes by SWR biologists using CDFG 1:100,000 hydrography data and other basemap information on hard copy maps. The segments' upper and lower extents were manually marked onto the basemaps by the biologists. This information was then visually interpreted from the paper maps and entered into a digital format using the "Route Tools'' extension provided by CDFG. The resulting event table was then used with the CDFG routed hydrography as the route reference to create routed events based on the biologists' segment determinations. The Microsoft Access table containing the accompanying segment attribute information was joined using 'GIS_Link' as the related field, and the shapefile 'CC_Chinook_Draft_2004' was created from the routed events. To minimize errors that may have occurred during the process, the completed digital file was compared against the marked maps for consistency. The biologists also reviewed the completed digital file to ensure attribute information was associated with the correct stream segments. Public comments were received following draft publication of the Critical Habitat Proposed Rule in December 2004. These comments were incorporated into the data set and the final distribution file 'CC_Chinook_Distribution_06_2005' was created.
data_units Binary; 0 = not habitat, 1 = habitat.
data_vintage 09/2005
encoding utf8
file_name ChinookSalmonDist_200509_202401_T2_v5
format GeoTiff
harvest_object_id 1c764a6c-ed98-4349-b760-25aff2fd322a
harvest_source_id a2637971-af12-457f-ae4a-831d2202a539
harvest_source_title WIFIRE Commons
maximum_value 1.0
metric_definition_and_relevance This layer was created to aid SWR biologists in establishing Critical Habitat for Chinook in the California Coastal ESU. The layer represents an approximation of Chinook occupancy and habitat quality in the region and is best suited for mapping those properties in the aforementioned region. 'CC_Chinook_Distribution_06_2005' depicts Chinook presence as well as habitat type and quality in the California Coastal Evolutionary Significant Unit (ESU). The data was compiled by the National Marine Fisheries Service (NOAA Fisheries) Southwest Regional Office (SWR) in an effort to designate Critical Habitat for Chinook in California. 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 update of 'CC_Chinook_Draft_2004'. It is found only in the Northern Region of California.
minimum_value 0.0
spatial {"type": "Polygon", "coordinates": [[[-124.93279620486966, 32.18296149262619], [-113.05514678277414, 32.18296149262619], [-113.05514678277414, 42.41053302087671], [-124.93279620486966, 42.41053302087671], [-124.93279620486966, 32.18296149262619]]]}
tier 2