Application of the Systems Impact Assessment Model (SIAM) to fishery resource issues in the Klamath River, California

Product Type: Open-file Report

Year: 2010

Author(s): Campbell, S.G., J.M. Bartholow, and J. Heasley

Suggested Citation:
Campbell, S.G., J.M. Bartholow, and J. Heasley. 2010. Application of the Systems Impact Assessment Model (SIAM) to fishery resource issues in the Klamath River, California: U.S. Geological Survey Open-File Report 2009-1265. 74 p.

Abstract

At the request of two offices of the U.S. Fish and Wildlife Service (FWS) located in Yreka and Arcata, Calif., we applied the Systems Impact Assessment Model (SIAM) to analyze a variety of water management concerns associated with the Federal Energy Regulatory Commission (FERC) relicensing of the Klamath hydropower projects or with ongoing management of anadromous fish stocks in the mainstem Klamath River, Oregon and California. Requested SIAM analyses include predicted effects of reservoir withdrawal elevations, use of full active storage in Copco and Iron Gate Reservoirs to augment spring flows, and predicted spawning and juvenile outmigration timing of fall Chinook salmon. In an effort to further refine the analysis of spring flow effects on predicted fall Chinook production, additional SIAM analyses were performed for predicted response to spring flow release variability from Iron Gate Dam, high and low pulse flow releases, the predicted effects of operational constraints for both Upper Klamath Lake water surface elevations, and projected flow releases specified in the Klamath Project 2006 Operations Plan (April 10, 2006)...