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Scientific Report

Assessing the Status and Trends of Spring Chinook Habitat in the Upper Grande Ronde River and Catherine Creek: Annual Report 2019

Abstract

The Columbia River Inter-Tribal Fish Commission is conducting a research, monitoring, and evaluation study designed to determine the effectiveness of aggregate restoration actions in improving freshwater habitat conditions and viability of ESA-listed spring Chinook Salmon (Oncorhynchus tshawytscha) populations. A critical uncertainty for fisheries managers in the Columbia Basin is whether freshwater habitat restoration actions will improve basin-wide habitat quantity/quality and thereby salmon productivity to a level sufficient to offset human-caused survival impairments elsewhere in the life cycle. Geographically, this project is focused on the upper Grande Ronde River and Catherine Creek basins (tributaries of the Snake River in the Columbia River basin), but with applications and testing of models also occurring in other Columbia River tributaries.   The objectives of this project are to: 1) Assess current status and trends in fish habitat characteristics considered to be key ecological concerns for viability of spring Chinook Salmon populations; 2) Evaluate effectiveness of aggregate stream restoration actions aimed at improving key ecological concerns; and 3) Develop a life cycle model to link biotic responses of spring Chinook Salmon populations to projected changes in stream habitat conditions.

Authors

Citation

White, S., C. Justice, L. Burns, B. Staton, D. Graves, and M. Kaylor. 2020. Assessing the Status and Trends of Spring Chinook Habitat in the Upper Grande Ronde River and Catherine Creek: Annual Report 2019. Columbia River Inter-Tribal Fish Commission, Portland, OR Technical Report 20-04. 249p.

Date

Apr 30th, 2020

Report No.

20-04

Media Type

CRITFC Technical Report

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