West Coast Stream Attributes for Salmon Intrinsic Potential

The dataset was built using the U.S. National Hydrography Dataset Plus (NHDPlusV2, 1:100,000 scale) stream network and value-added attributes (VAA), the U.S. National Elevation Dataset 10-meter digital elevation model, the National Oceanic and Atmospheric Administration National Water Model recurrence interval flows, the United States Geological Survey (USGS) level 4-scale Hydrological Unit Code boundaries, and the U.S. Environmental Protection Agency Level III ecoregion boundaries. Reaches in this dataset vary in length up to 200 meters. Reaches with unknown flow direction were removed from the original stream network.

This geospatial layer was developed in support of Magnuson-Stevens Fishery Conservation and Management Act for the Pacific Fishery Management Council. It includes calculated stream attributes for West Coast salmon Essential Fish Habitat (EFH) rivers spanning Washington, Oregon, Idaho, and California.

These data were created in order to aid the mapping and GIS efforts for fishery management in the western United States. They can be used in the further development of the West Coast salmon EFH extent. Data were collected and aggregated from the best available sources at the time the layer was developed. 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. *** No Warranty*** The user assumes the entire risk related to its use of these data. NOAA Fisheries is providing these data "as is," and NOAA Fisheries disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate dataset limitations, restrictions or intended use. In no event will NOAA Fisheries be liable to you or to any third party for any direct, indirect, incidental, consequential, special or exemplary damages or lost profit resulting from any use or misuse of this data.

Microsoft Windows 10 Version 10.0 (Build 22621) ; Esri ArcGIS 13.0.2.36056

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This data will be available through the NOAA GeoPlatform for the foreseeable future.