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An Evaluation Of Adult Chinook Salmon And Steelhead Behavior At Counting Windows And Through Vertical-Slot Weirs Of Bonneville Dam Using Radiotelemetry: 2001-2002 Item Info
- Title:
- An Evaluation Of Adult Chinook Salmon And Steelhead Behavior At Counting Windows And Through Vertical-Slot Weirs Of Bonneville Dam Using Radiotelemetry: 2001-2002
- Report Type:
- Technical Report
- Date:
- 2004
- Authors:
- Jepson, M.A.; Nauman, C.M.; Peery, C.A.; Tolotti, K.R.; Moser, M.L.
- Affiliations:
- Idaho Cooperative Fish and Wildlife Research Unit; Northwest Fisheries Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration
- Report Number:
- 2004-2
- Publisher:
- University of Idaho
- Funder:
- U.S. Army Corps of Engineers, Portland District; U.S. Army Corps of Engineers, Walla Walla District
- Abstract:
- We used radio telemetry to evaluate the behavior of spring–summer Chinook salmon, fall Chinook salmon, and steelhead swimming past counting windows and through vertical-slot weirs of the Bradford Island and Washington shore fishways at Bonneville Dam during 2001 and 2002. Median times to pass a counting window ranged from 2.0 to14.7 min among all run/year/fishway groups (n=12) and were consistently highest for run/year groups initially recorded at the Bradford Island counting window. Ratios of counting window passage times to total dam passage times (first record in tailrace to last record at ladder exit) for individual fish were ≤ 1.0% based on median values, and ≤6.7% based on mean values, of all year/run/fishway groups. The maximum proportion of fish swimming downstream to a transition pool after being recorded at a counting window was for spring–summer Chinook salmon at the Bradford Island counting window in 2001 (2.4%, n=340). The median counting window passage times for all fish that swam to a transition pool after being detected at a counting window was approximately 30 h (n=24).
- Species:
- Steelhead, Oncorhynchus mykiss Chinook salmon, Oncorhynchus tshawytscha
- Location:
- Bonneville Dam; Columbia River; Snake River
- Subjects:
- salmonids Federal Columbia River Power System FCPRS radiotelemetry migration passage behavior fishways counting windows vertical-slot weirs
- Source:
- University of Idaho, Fish Ecology Research Lab
- Original Filename:
- 2004-02-CK-SH-behavior-count-windows-slot-weirs-Bonneville-2001-2002.pdf
- Format:
- application/pdf
Source
- Preferred Citation:
- "An Evaluation Of Adult Chinook Salmon And Steelhead Behavior At Counting Windows And Through Vertical-Slot Weirs Of Bonneville Dam Using Radiotelemetry: 2001-2002", Adult Salmon and Steelhead Migration Studies: 1996-2014, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/ferl/items/ferl-tr-2004-2.html
Rights
- Rights:
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