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Essential Fish Habitat, Pacific Salmon GIS Data

Metadata Updated: March 8, 2024

This file represents salmonid freshwater and estuarine Essential Fish Habitat (EFH) in the western United States. Congress, through the Magnuson-Stevens Act, defined EFH as "those waters and substrate necessary to fish for spawning, breeding, feeding, or growth to maturity." This dataset follows the federal codification of delineating EFH using 4th field Hydrologic Units. It spatially depicts designated EFH for Federally-managed Pacific salmon within freshwater and estuarine regions of California, Oregon, Washington, and Idaho. Areas above identified certain impassible dams are not designated EFH, and these have been removed from the 4th field Hydrologic Units. Only areas defined as EFH are present in this dataset. Each Hydrologic Unit polygon has been coded to indicate for which species of salmon (Chinook salmon, coho and/or pink) it represents EFH.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date February 29, 2024
Metadata Created Date August 12, 2022
Metadata Updated Date March 8, 2024
Reference Date(s) 2015 (creation), 2015 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NMFS WCRO

Additional Metadata

Resource Type Dataset
Metadata Date February 29, 2024
Metadata Created Date August 12, 2022
Metadata Updated Date March 8, 2024
Reference Date(s) 2015 (creation), 2015 (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:56737
Access Constraints Cite As: West Coast Regional Office, [Date of Access]: Essential Fish Habitat, Pacific Salmon GIS Data [Data Date Range],, Access Constraints: None, Use Constraints: No warranty, expressed or implied is made and no liability is assumed by NOAA Fisheries as to the positional or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. Government in the use of these files., Distribution Liability: These data are intended to assist in mapping and GIS efforts for fishery management efforts for the Pacific Coast Salmon. They can be used to depict the general areas of salmon EFH. Data were combined from the best available sources with some adjustments made to ensure a logical combination. Every attempt has been made to ensure the accuracy of these data, however they DO NOT constitute a legal description of Essential Fish Habitat. No liability is assumed for the accuracy or completeness of the information contained.
Bbox East Long -112.998471
Bbox North Lat 49.002481
Bbox South Lat 36.762317
Bbox West Long -124.77148
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id e1dfe0e6-7830-419b-8122-30d0fa6134b8
Harvest Source Id d16be56f-1eb7-428b-94cb-0d45c55dd2ed
Harvest Source Title NMFS WCRO
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Lineage The polygons depicted in this data set were obtained from the United States Geological Survey, National Geospatial Technical Operations Center, National Hydrography, Hydrologic Unit Code (HUC) 8 (also known as 4th Field HUC). Areas above identified impassable barriers were removed from the HUC.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-124.77148, 36.762317], [-112.998471, 36.762317], [-112.998471, 49.002481], [-124.77148, 49.002481], [-124.77148, 36.762317]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2015

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