Upstream Migration Timing of Columbia Basin Chinook and Sockeye Salmon and Steelhead in 2019
Between April 25 and October 18, 2019, Chinook (Oncorhynchus tshawytscha) and Sockeye (Oncorhynchus nerka) salmon as well as steelhead (Oncorhynchus mykiss) were sampled at the Bonneville Dam Adult Fish Facility. 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, and weirs, as well as in-stream antennas. Total numbers of fish tracked upstream were 1,190 spring Chinook, 878 summer Chinook, 1,415 fall Chinook, 820 steelhead, and 972 Sockeye Salmon.
Fryer, J.K., J. Whiteaker, D. Kelsey, and J. Hess 2021. Upstream Migration Timing of Columbia Basin Chinook and Sockeye Salmon and Steelhead in 2019. Columbia River Inter-Tribal Fish Commission Technical Report 21-03 for U.S. Dept. of Energy Bonneville Power Administration Project 2008-518-00. 171p.
May 12th, 2021
CRITFC Technical Report