Interim Report of Data Supporting Phase 1 Reviews of Essential Fish Habitat for Pacific Coast Salmon

This document focuses on the management of freshwater EFH for Pacific salmon and steelhead and presents new analysis of the riverine landscape that supports these species at the spatial scales necessary to make conservation decisions. Our objective was to create a database of the key spatial layers (hydrology, channel gradient, and confinement) necessary to estimate the capacity of available riverine habitats to support Pacific salmon and steelhead populations across the U.S. Pacific coast region. Other uses include identifying the potential for habitats above natural and artificial barriers, like dams, to support salmon or steelhead populations in the future.