Upstream Migration Timing of Columbia Basin Chinook and Sockeye Salmon and Steelhead in 2017
Between April 19 and October 18, 2017, we sampled Chinook (Oncorhynchus tshawytscha) and Sockeye (Oncorhynchus nerka) salmon as well as steelhead (Oncorhynchus mykiss) at the Bonneville Dam Adult Fish Facility (AFF). Fish were measured for fork length, scales were collected for analysis of age, tissue samples collected for genetic analysis, and the fish were tagged with Passive Integrated Transponder (PIT) tags. These fish were tracked upstream as they passed through sites with PIT tag antennas, including fish ladders at dams, juvenile bypasses, hatcheries, weirs, as well as in-stream antennas. Total numbers of fish tracked upstream were 829 spring Chinook, 1,005 summer Chinook, 971 fall Chinook, 836 steelhead, and 1,079 Sockeye Salmon.
Jeffrey K. Fryer, J.K., J. Whiteaker, D. Kelsey, and J. Hess. 2019. Upstream migration timing of Columbia Basin Chinook and Sockeye salmon and steelhead in 2017. Columbia River Inter-Tribal Fish Commission Technical Report 19-05, Portland, OR. 132 p.
May 24th, 2019
CRITFC Technical Report