Accession Number : ADA323713

Title :   Salmon Decision Analysis Lower Snake River Feasibility Study.

Descriptive Note : Final rept.

Corporate Author : HARZA NORTHWEST INC PORTLAND OR

PDF Url : ADA323713

Report Date : 04 OCT 1996

Pagination or Media Count : 295

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.

Descriptors :   *DECISION MAKING, *FEASIBILITY STUDIES, *FISHES, PATHS, GROUND WATER, RIVERS, TRADE OFF ANALYSIS, FISHERIES, WILDLIFE, RESERVOIRS, ECOLOGY, HYDROELECTRICITY, DAMS, DRAWDOWN.

Subject Categories : Economics and Cost Analysis
      Biology
      Ecology

Distribution Statement : APPROVED FOR PUBLIC RELEASE