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Studies into Factors Limiting the Abundance of Okanagan and Wenatchee Sockeye Salmon in 2018

Apr 15, 2020


A total of 1,871 Sockeye Salmon, Oncorhynchus nerka, were sampled and 1,859 PIT tagged at the Bonneville Dam Adult Fish Facility in 2018. Sockeye PIT tagged by this project, along with previously PIT tagged Sockeye Salmon, were tracked upstream using data from detection arrays at mainstem Columbia River dam fish ladders as well as in-river arrays in the Wenatchee and Okanagan basins. Upstream detections of adult PIT tagged Sockeye Salmon tracked by this project resulted in an estimated survival of 88.9% to McNary Dam and 80.7% to Rock Island Dam in 2018.


Jeffrey Fryer, Denise Kelsey, Howie Wright, Skyeler Folks, Richard Bussanich, Kim Hyatt, Dan Selbie, and Margot Stockwell


Fryer, J.K., D. Kelsey, H. Wright, S. Folks, R. Bussanich, K.D. Hyatt, D. Selbie, and M.M. Stockwell. 2020. Studies into factors limiting the abundance of Okanagan and Wenatchee Sockeye Salmon in 2018. Columbia River Inter-Tribal Fish Commission Technical Report 20-01, for U.S. Dept. of Energy Bonneville Power Administration Project 2008-503-00. Portland, OR. 239p.



Report No.


Media Type

CRITFC Technical Report