Scott Evans
Scott is an Electronics Technician for the USGS, Columbia River Research Laboratory.
Research Interests:
I am an Electronics Technician with the U.S. Geological Survey’s Western Fisheries Research Center stationed at the Columbia River Research Laboratory in Cook, Washington. My fisheries career began in 1992 and has focused on the evaluation of anadromous salmon throughout the Pacific Northwestern United States. The majority of my career has involved research evaluating the behavior, passage, and survival of juvenile salmonids in relation to downstream fish passage facilities. I have been responsible for leading the design, installation, and maintenance of equipment for various projects utilizing state-of-the-art radio and acoustic telemetry techniques at many Columbia, Snake, and Willamette River hydroelectric dams, as well as in the Sacramento–San Joaquin River Delta.
Professional Experience
2002 to Present – Electronics Technician, U.S. Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, Cook, WA
1994-2002 – Fishery Biologist, U.S. Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, Cook, WA
1993 - Research Assistant, Oregon State University, Oregon Cooperative Fishery Research Unit, Corvallis, OR
1992 – Fishery Technician, National Marine Fisheries Service, Rufus OR
Education and Certifications
B.S. 1992. Biology, Oregon State University, Corvallis, OR
Science and Products
Summary of juvenile salmonid passage and survival at McNary Dam-Acoustic survival studies, 2006-09
Assessing survival of Mid-Columbia River released juvenile salmonids at McNary Dam, Washington, 2008-09
Evaluation of strobe lights to reduce turbine entrainment of juvenile steelhead (Oncorhynchus mykiss) at Cowlitz Falls Dam, Washington
Performance of a prototype surface collector for juvenile salmonids at Bonneville dam's first powerhouse on the Columbia River, Oregon
Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2005
Passage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam, 2004: Revised for corrected spill annual report
Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2004
Passage behavior of radio-tagged yearling Chinook salmon at Bonneville Dam, 2002: Revised for corrected spill annual report
Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2002: Revised for corrected spill annual report
Passage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam 2002
Passage behavior of radio-tagged yearling Chinook salmon at Bonneville Dam, 2001
Passage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam associated with the surface bypass program, 2000
Science and Products
- Publications
Filter Total Items: 47
Summary of juvenile salmonid passage and survival at McNary Dam-Acoustic survival studies, 2006-09
Passage and survival data were collected at McNary Dam between 2006 and 2009. These data have provided critical information for resource managers to implement structural and operational changes designed to improve the survival of juvenile salmonids as they migrate past the dam. Given the importance of these annual studies, the primary objectives of this report were to summarize the findings of theAuthorsNoah S. Adams, Scott D. EvansAssessing survival of Mid-Columbia River released juvenile salmonids at McNary Dam, Washington, 2008-09
Few studies have evaluated survival of juvenile salmon over long river reaches in the Columbia River and information regarding the survival of sockeye salmon at lower Columbia River dams is lacking. To address these information gaps, the U.S. Geological Survey was contracted by the U.S. Army Corps of Engineers to evaluate the possibility of using tagged fish released in the Mid-Columbia River toAuthorsScott D. Evans, Christopher E. Walker, Scott J. Brewer, Noah S. AdamsEvaluation of strobe lights to reduce turbine entrainment of juvenile steelhead (Oncorhynchus mykiss) at Cowlitz Falls Dam, Washington
We conducted a radiotelemetry evaluation to determine if strobe lights could be used to decrease turbine entrainment of juvenile steelhead (Oncorhynchus mykiss) at Cowlitz Falls Dam, Washington. We found that radio-tagged juvenile steelhead approached and entered two spillbays (one lighted, one unlighted) in equal proportions. However, the presence of strobe lights was associated with decreased spAuthorsTobias J. Kock, Scott D. Evans, Theresa L. Liedtke, Dennis W. Rondorf, Mike KohnPerformance of a prototype surface collector for juvenile salmonids at Bonneville dam's first powerhouse on the Columbia River, Oregon
During April-July 2000, we radio-tagged and released juvenile Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) to evaluate a prototype surface flow bypass at Bonneville Dam on the Columbia River. The mock bypass, called a prototype surface collector (PSC), had six vertical slot entrances that were each 6 m wide and 12 m deep. The PSC was retrofitted to the upstream facAuthorsS.D. Evans, N.S. Adams, D.W. Rondorf, J.M. Plumb, B.D. EbbertsPassage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2005
No abstract availableAuthorsR.E. Reagan, M.J. Farley, S.D. Evans, L.S Wright, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam, 2004: Revised for corrected spill annual report
Flow augmentation, spill, surface collection, and improved turbine guidance systems have been identified as potential management actions to improve passage efficiency and survival of outmigrating juvenile salmonids. The U.S. Army Corps of Engineers (USACE), along with regional, state, and federal resource agencies, has designed and implemented studies to determine which management actions would prAuthorsR.E. Reagan, S.D. Evans, L.S Wright, M.J. Farley, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2004
Flow augmentation, spill, surface collection, and improved turbine guidance systems have been identified as potential management actions to improve passage efficiency and survival of outmigrating juvenile salmonids. The U.S. Army Corps of Engineers (USACE), along with regional, state, and federal resource agencies, has designed and implemented studies to determine which management actions would prAuthorsR.E. Reagan, S.D. Evans, L.S Wright, M.J. Farley, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged yearling Chinook salmon at Bonneville Dam, 2002: Revised for corrected spill annual report
Abstract not availableAuthorsS.D. Evans, L.S Wright, C. D. Smith, R.E. Wardell, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam, 2002: Revised for corrected spill annual report
Abstract not availableAuthorsS.D. Evans, L.S Wright, R.E. Wardell, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged yearling Chinook salmon and steelhead at Bonneville Dam 2002
Abstract not availableAuthorsS.D. Evans, L.S Wright, C. D. Smith, R.E. Wardell, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged yearling Chinook salmon at Bonneville Dam, 2001
Abstract not availableAuthorsS.D. Evans, C. D. Smith, N.S. Adams, D.W. RondorfPassage behavior of radio-tagged subyearling Chinook salmon at Bonneville Dam associated with the surface bypass program, 2000
Abstract not availableAuthorsS.D. Evans, N.S. Adams, D.W. Rondorf