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U.S. Department of Energy
Office of Scientific and Technical Information

Supplement Analysis for the Watershed Management Program EIS (DOE/EIS-0265/SA-68)

Technical Report ·
DOI:https://doi.org/10.2172/824075· OSTI ID:824075

BPA provides funds to the Grande Ronde Model Watershed Program which cooperates with local agencies and landowners to plan, fund, and implement anadromous fish habitat restoration projects in the Grande Ronde Basin. The GRMWP has agreed to partially fund three bridge replacement projects with the Union County Public Works Department. This Supplement Analysis covers those bridge replacement activities that will take place at the Mill Creek crossing and the Little Creek crossing. The Union County Public Works Department is responsible for replacing structurally deficient bridges with structures able to pass 50-year peak flow events. The UCPWD replacement structures of choice, due to budget limitations, are large 8-10 foot corrugated metal pipes. These pipes would meet peak flow requirements but would be less than ideal for fish passage. The GRMWP proposes to provide funding assistance to UCPWD to upgrade replacement structures to full-channel spanning stringer bridges. These full-channel spanning structures will provide the best possible conditions for fish passage, water quality, and accommodation of peak flows.

Research Organization:
U.S. Department of Energy, Bonneville Power Administration (US)
Sponsoring Organization:
USDOE Office of NEPA Policy and Assistance (EH-42) (US)
OSTI ID:
824075
Report Number(s):
DOE/EIS-0265/SA-68
Country of Publication:
United States
Language:
English