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Scientific Report

Limiting Factors of the Abundance of Okanagan and Wenatchee Sockeye Salmon in 2013

Abstract

A total of 789 Sockeye Salmon, Oncorhynchus nerka, were PIT tagged at the Bonneville Dam Adult Fish Facility in 2013. These fish, along with previously PIT tagged Sockeye also sampled, were tracked upstream using data from detection arrays at mainstem Columbia River dam fish ladders as in-river arrays in the Wenatchee and Okanagan basins. Using data from PIT tags deployed at Bonneville Dam, the estimated stock composition of Sockeye Salmon was 70.0% Okanagan and 28.0% Wenatchee with 2.0% last detected in other potential terminal areas (Entiat 1.0%, Yakima 0.5%, and Deschutes 0.6%).

Authors

Jeffrey K. Fryer, Howie Wright, Skyeler Folks, Richard Bussanich, Kim Hyatt, and Margot Stockwell

Citation

Fryer, J.K., H. Wright, S. Folks, R. Bussanich, K. Hyatt, and M. Stockwell. 2014. Limiting Factors of the Abundance of Okanagan and Wenatchee Sockeye Salmon in 2013. Columbia River Inter-Tribal Fish Commission Technical Report #15-01, Portland, Oregon.

Date

Mar 1st, 2015

Report No.

15-01

Media Type

CRITFC Technical Report

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