Species Programs

CalFish is a multi-agency program for collecting, standardizing, maintaining, and providing access to quality fisheries data and information for California. CalFish acts as a clearinghouse for data and information from cooperators and outside organizations. Information about a variety of key programs may be accessed below.

Anadromous Biogeographic Populations Groups

Biogeographic Populations Groups (BPG) are divisions within a Distinct Population Segment (DPS) of contiguous areas with broadly similar physical geography and hydrology.

Anadromous Critical Habitat

Critical habitat is defined as specific areas within the geographical area occupied by the species at the time of listing, if they contain physical or biological features essential to conservation, and those features may require special management considerations or protection; and specific areas outside the geographical area occupied by the species if the agency determines that the area itself is essential for conservation.

Anadromous Evolutionarily Significant Units

This dataset defines the boundaries of Evolutionarily Significant Units which are defined as a population that is substantially reproductively isolated from cospecific populations and represents an important component in the evolutionary legacy of the species.

Anadromous Fish Abundance and Trends

Anadromous fish abundance data are those collected by a variety of agencies and organizations and reflect current and historic abundance of anadromous fish in a selected stream or river. Compiled by the Pacific States Marine Fisheries Commission.

Anadromous Fish Distribution

The Environmental Resource Information Service, CDFW Northern Region, recently developed a method for deriving salmonid distribution from existing observation data. Distribution and Range datasets are now available for winter and summer steelhead and coho salmon.

CDFW Fisheries Branch Anadromous Resources Assessment - Chinook Salmon

The Fisheries Branch Anadromous Resource Assessment Unit compiles annual population estimates of Chinook salmon, Oncorhynchus tshawytscha, in the Sacramento-San Joaquin River system. The GrandTab report is a compilation of sources estimating the late-fall, winter, spring, and fall-run Chinook salmon total populations for streams surveyed.

USGS Nonindigenous Aquatic Species (NAS)

Offers a link to the California portion of the Nonindigenous Aquatic Species (NAS) information resource for the United States Geological Survey. The NAS program has been established as a central repository for accurate and spatially referenced biogeographic accounts of nonindigenous aquatic species.