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Survival and migration behavior of juvenile salmonids at McNary Dam, 2005: Final report of research

August 1, 2007

During 2005, we used radio-telemetry at McNary Dam to estimate passage and survival parameters of juvenile salmonids. During the spring migration period, two treatments were implemented: 1) 12-h spill operations with spill occurring between 1800 hours and 0600 hours, and 2) 24-h spill with spill occurring 24 hours per day. Treatments were not implemented during the summer migration period. However, a court-order was issued by Judge James Redden, U.S. 9th District Court, mandating a maximum powerhouse discharge of 50 kcfs with the remaining discharge to be spilled over the 24-h diel cycle between 1 July and 31 August 2005. Consequently, our study was conducted during two distinct periods: 1) a short period of involuntary spill for 24-h per day that occurred between 22 June and 30 June 2005, and 2) the period of court-ordered spill that was implemented after 1 July 2005.

Citation Information

Publication Year 2007
Title Survival and migration behavior of juvenile salmonids at McNary Dam, 2005: Final report of research
DOI
Authors Russell W. Perry, Amy C. Braatz, Marc S. Novick, Joel N. Lucchesi, Gary L. Rutz, Ryan C. Koch, Jacquelyn L. Schei, Noah S. Adams, Dennis W. Rondorf
Publication Type Report
Publication Subtype Other Government Series
Series Title
Series Number
Index ID 70179478
Record Source USGS Publications Warehouse
USGS Organization Western Fisheries Research Center