Habitat Project

Upper Grande Ronde Tributary Assessment

This Tributary/Reach Assessment summarizes general watershed and refined reach-scale data and analyses presented in existing reports such as the Grande Ronde Subbasin Plan (NPCC 2004) and Development and Evaluation of a Data Dictionary to Standardize Salmonid Habitat Assessments in the Pacific Northwest, Fisheries (NOAA Fisheries 2012). This Tributary/Reach Assessment is a compilation report providing a range of scientific information relevant to habitat improvements for salmon and steelhead over a spatial scale fine enough to identify specific habitat improvement actions and coarse enough to support continuity between those actions. The purpose of this Tributary/Reach Assessment is to assess and document reach-scale physical characteristics and how they have changed over time for the purpose of identifying suitable habitat improvement actions that address limiting factors within the reach. The completed Tributary/Reach Assessment may be used to guide future habitat rehabilitation, ensuring that specific projects are developed and advanced in a manner suitable to the geomorphic character and trends prevalent throughout the reach. In this way, a watershed and reach-scale approach to habitat improvement can be facilitated.