Downstream passage for juvenile Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss) through the fish weir at Foster Dam, Oregon, was evaluated to assess the weir’s efficacy as a long-term passage solution. Radio telemetry was used to estimate survival, passage, and effectiveness for the fish weir, spillway, and turbines. Survival of Chinook salmon through the fish weir varied by season and reservoir elevation (66–87%), passage proportions were low (8–20%), and fish weir effectiveness was low to moderate (0.5–2.0). Steelhead survival was lower (57–77%) but passed the fish weir in higher proportions (77%) and weir effectiveness was consistently high (3.0–5.5). Our results indicate the existing fish weir will not be a suitable long-term passage solution for all species. However, because of the high passage proportions and effectiveness observed for steelhead, further development of the surface flow concept appears to be promising for safely passing downstream-migrating fishes.
Hughes, James S., et al. "Evaluation of Juvenile Salmon Passage and Survival Through a Fish Weir and Other Routes at Foster Dam, Oregon, USA." Fisheries Management and Ecology, vol. 28, no. 3, Jun. 2021. https://doi.org/10.1111/fme.12481
Hughes, James S., Khan, Fenton 0., Liss, Stephanie A., Harnish, Ryan A., Johnson, Gary E., Bellgraph, Brian J., & Znotinas, Katherine R. (2021). Evaluation of Juvenile Salmon Passage and Survival Through a Fish Weir and Other Routes at Foster Dam, Oregon, USA. Fisheries Management and Ecology, 28(3). https://doi.org/10.1111/fme.12481
Hughes, James S., Khan, Fenton 0., Liss, Stephanie A., et al., "Evaluation of Juvenile Salmon Passage and Survival Through a Fish Weir and Other Routes at Foster Dam, Oregon, USA," Fisheries Management and Ecology 28, no. 3 (2021), https://doi.org/10.1111/fme.12481
@article{osti_1804707,
author = {Hughes, James S. and Khan, Fenton 0. and Liss, Stephanie A. and Harnish, Ryan A. and Johnson, Gary E. and Bellgraph, Brian J. and Znotinas, Katherine R.},
title = {Evaluation of Juvenile Salmon Passage and Survival Through a Fish Weir and Other Routes at Foster Dam, Oregon, USA},
annote = {Downstream passage for juvenile Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss) through the fish weir at Foster Dam, Oregon, was evaluated to assess the weir’s efficacy as a long-term passage solution. Radio telemetry was used to estimate survival, passage, and effectiveness for the fish weir, spillway, and turbines. Survival of Chinook salmon through the fish weir varied by season and reservoir elevation (66–87%), passage proportions were low (8–20%), and fish weir effectiveness was low to moderate (0.5–2.0). Steelhead survival was lower (57–77%) but passed the fish weir in higher proportions (77%) and weir effectiveness was consistently high (3.0–5.5). Our results indicate the existing fish weir will not be a suitable long-term passage solution for all species. However, because of the high passage proportions and effectiveness observed for steelhead, further development of the surface flow concept appears to be promising for safely passing downstream-migrating fishes.},
doi = {10.1111/fme.12481},
url = {https://www.osti.gov/biblio/1804707},
journal = {Fisheries Management and Ecology},
number = {3},
volume = {28},
place = {United States},
year = {2021},
month = {06}}