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Evaluation of Juvenile Salmon Passage and Survival Through a Fish Weir and Other Routes at Foster Dam, Oregon, USA

Journal Article · · Fisheries Management and Ecology
DOI:https://doi.org/10.1111/fme.12481· OSTI ID:1804707
 [1];  [2];  [1];  [1];  [1];  [1];  [1]
  1. BATTELLE (PACIFIC NW LAB)
  2. Army Corp of Engineers
+ Show Author Affiliations
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.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1804707
Report Number(s):
PNNL-SA-156667
Journal Information:
Fisheries Management and Ecology, Journal Name: Fisheries Management and Ecology Journal Issue: 3 Vol. 28
Country of Publication:
United States
Language:
English

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