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

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.

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 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.

The Environmental Resource Information Service, CDFG 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.

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.

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.

Shows the locations of hydrologic data collection stations that make up the CDEC network. CDEC provides a centralized location to store and process real-time hydrologic information from snow reporting gages and precipitation and river stage sensors gathered by various cooperators throughout the State. Station attributes provide links to the data that has been collected at each location.

The California State Water Resources Control Board California Environmental Data Exchange Network (CEDEN) is a system designed to facilitate the integration and sharing of California's water resource monitoring data collected by many different participants. The purpose of this dataset is to show locations of water quality, toxicity, tissue, and benthic monitoring stations and to link back to a database of detailed information that is available for download.

Compiles currently available fish passage information from many different sources, allows past and future barrier assessments to be standardized and stored in one place, and enables the analysis of cumulative effects of passage barriers in the context of overall watershed health.

Shows the locations of continuous and discrete water quality monitoring sites managed by the California Department of Water Resources (CDWR). The purpose of this dataset is to link back to a database of detailed water quality information that is available for download for each site.

Surf Your Watershed is a service to help locate, use, and share watershed environmental information. This dataset offers a link to the California segment of the Surf Your Watershed service offered by the United States Environmental Protection Agency (EPA).

Provides a reasonable view of the spatial distribution of past large fires. Due to missing perimeters this layer should not be used for statistical analysis and reporting.

The Fish Passage Forum promotes collaboration among public and private sectors on fish passage improvement programs and projects to restore migration corridors and open inaccessible habitat to anadromous salmonid species in California.

Displays the boundaries of groundwater basins and subbasins as defined by the California Department of Water Resources.

As part of the Clean Water Act the EPA requires the California State Water Resources Control Board to submit a list of impaired water bodies. These are defined as impaired and threatened waters (stream/river segments, lakes) where pollution controls are not sufficient to attain or maintain applicable water quality standards.

This layer represents dams within the jurisdiction of the State of California. They are defined as artificial barriers, together with appurtenant works, which are 25 feet or more in height or have an impounding capacity of 50 acre-feet or more.

This dataset presents an assessment of cumulative anthropogenic disturbance to fish habitats in California under the assumption that downstream local habitat conditions will reflect conditions in the catchment upstream.

The U.S. Fish & Wildlife Service National Wetlands Inventory works to provide current or recent geospatially referenced information on the status, extent, characterists and functions of wetlands, riparian, deepwater and related aquatic habitats in priority areas to promote the understanding and conservation of these resources.

GIS datasets representing the distribution of a variety of invasive plants in a variety of different locations.

Historic and current reach summaries of in-stream habitat data collected by the Department of Fish and Game and others. Contains stream habitat information for streams from Del Norte to Santa Cruz counties.

This dataset documents the location of USGS active and historical streamgages. Detailed flow data can be accessed through a link to the detailed USGS database found in the feature attributes.

Displays the locations of mines and mineral processing plants in California.

DFG's Vegetation Classification and Mapping Program (VegCAMP) focuses on developing and maintaining maps and the classification of all vegetation and habitats in the state to support conservation and managment decisions at the local, regional and state levels.

The Department of Fish and Game and NOAA Fisheries have been developing a statewide plan to initiate standard monitoring of coastal populations of anadromous fish species from San Diego to Del Norte counties. The fish population and habitat information gathered will allow better conservation of coastal coho and Chinook salmon and steelhead.

This dataset defines the boundaries of all of California's marine protected areas (MPAs) as of December 19, 2012. This dataset reflects the Department of Fish and Wildlife's best representation of marine protected areas based upon current California Code of Regulations, Title 14, Section 632: Natural Resources, Division 1: FGC - DFG.

The California Protected Areas Database (CPAD) is a GIS inventory maintained by GreenInfo Networks of all protected park and open space lands in California.

The Upper Sacramento River Basin (USRB) contains much of California's salmon and steelhead populations. This page contains salmon and steelhead assessment project files consisting of long term data, annual reports, databases, spreadsheets and descriptions of monitoring efforts.

The California Department of Fish and Game manages 711 properties throughout the state. This dataset is intended to provide information on the location of lands owned and/or administered by the Department of Fish and Game and for general conservation planning within the state.

The goal of this project was to develop a comprehensive monitoring plan for Central Valley Chinook Salmon, which provides fishery managers the data necessary to assess Chinook population status and trends. This information is necessary as part of an overall strategy to ensure Chinook conservation and is critical to moving forward on numerous management and recovery efforts.

The goal of this project is to develop a comprehensive monitoring plan for Central Valley steelhead, which when implemented, will provide fishery managers the data necessary to assess steelhead population status and trends.

CalFish offers a hatcheries dataset to approximate statewide locations of California Department of Fish and Game (DFG) trout and salmon hatcheries.

Displays zoning and land use information for California where available.

Provides a link to the NOAA NMFS issued permits for protected species summarized by HUC 8 geographic units as a way to provide information about anadromous fish research, and monitoring that is occurring.

California Fish & Game Code section 1505 designates hydrographic units designated as protected spawning areas.

The Public, Conservation and Trust Lands dataset was developed as part of the California Legacy Project, and is intended to provide stakeholders in both the public and private sectors with a planning-level representation of ownership in California.

The Restoration Groups by Watershed tool helps facilitate collaboration by providing names of groups or agencies working in a hydrologic unit with links to their websites. A map based search is used to query this data.

The California Habitat Restoration Project Database (CHRPD) captures, manages, and disseminates data about habitat restoration projects in California benefiting anadromous fish. The CHRPD currently contains data from the California Department of Fish and Game’s Fisheries Restoration Grants Program (FRGP), the CALFED Ecosystem Restoration Program (ERP), the National Fish and Wildlife Foundation, the State Coastal Conservancy, the NOAA Restoration Center, the U.S. Fish and Wildlife Service, the California Conservation Corps, and the Cantara Trustee Council.

The primary responsibilities of the Wildlife Conservation Board (WCB) are to select, authorize and allocate funds for the purchase of land and waters suitable for recreation purposes and the preservation, protection and restoration of wildlife habitat.

California Hydrography datasets fulfill California's need of hydrography for visualization and mapping, as well as a common spatial base for in depth analysis of multiple data sets.

Calwater 2.2.1 standardizes the boundary delineation, coding, and naming of California watersheds by government agencies.

A Hydrologic Unit Code (HUC) is a unique code, consisting of two to eight digits, used to identify watersheds based on the United States Geological Survey's four-level classification system.

The Public Land Survey System grid breaks the State of California up into townships, ranges and sections.