Salmon Decision Analysis Lower Snake River Feasibility Study.
Abstract
The National Marine Fishery Service (NMFS) 1995 Biological Opinion provides an Interim Plan to recover chinook salmon in the Snake River. It calls for increased spill and flows past the four lower Snake hydroelectric dams. The Plan directs the Corps to analyze additional measures including reservoir drawdowns and surface collectors. NMFS requested guidance on the specific design and testing of drawdowns and surface collectors. The purpose of this report is to lay out the options for improving the hydropower system to help save salmon. There are only three options or paths available. Our goal is to provide biological criteria for each path, estimate how much it might help salmon, how long it will take, and how much it might cost. We will also compare hydropower improvements with other factors affecting recovery. Along with surface collectors and drawdowns, we identify 15 major actions (tools) that can be implemented for salmon under three different strategies we call paths.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 04, 1996
- Accession Number
- ADA323713