An estimate of chinook salmon (Oncorhynchus tshawytscha) spawning habitat and redd capacity upstream of a migration barrier in the upper Columbia River

Journal Article · Sun Feb 01 04:00:00 EST 2004 · Canadian Journal of Fisheries and Aquatic Sciences

DOI:https://doi.org/10.1139/f03-140· OSTI ID:15006807

Hanrahan, Timothy P; Dauble, Dennis D; Geist, David R

Chief Joseph Dam on the Columbia River is the upstream terminus for anadromous fish, due to its lack of fish passage facilities. Management agencies are currently evaluating the feasibility of reintroducing anadromous fish upriver of Chief Joseph Dam. We evaluated the physical characteristics of potential fall chinook salmon (Oncorhynchus tshawytscha) spawning habitat in the upper section of Chief Joseph Reservoir. The objective of this study was to estimate the quantity and location of potential spawning habitat, and secondly to determine the redd capacity of the area based on spawning habitat characteristics. We used a geomorphic approach to first identify specific segments with the highest potential for spawning. The suitability of these segments for spawning was then estimated through the use of empirical physical data and modeled hydraulic data. We estimated 5% (48.7 ha) of the study area contains potentially suitable fall chinook salmon spawning habitat. Potential spawning habitat is primarily limited by water too deep and secondly by water velocities too low, the combination of which results in 20% (9.6 ha) of the potential spawning habitat being characterized as high quality. Estimates of redd capacity within potential spawning habitat range from 207? 1599 redds, based on proportional use of potential habitat and varying amounts of channelbed used by spawning salmon. The results of our study provide fisheries managers significant insight into one component of the complex issue of reintroducing anadromous fish to the Columbia River upstream of Chief Joseph Dam.

• Research Organization: Pacific Northwest National Lab., Richland, WA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 15006807
• Report Number(s): PNWD-SA-5910
• Journal Information: Canadian Journal of Fisheries and Aquatic Sciences, Journal Name: Canadian Journal of Fisheries and Aquatic Sciences Journal Issue: 1 Vol. 61; ISSN CJFSDX; ISSN 0706-652X
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
CAPACITY
CHINOOK SALMON
COLUMBIA RIVER
FISH PASSAGE FACILITIES
FISHERIES
HABITAT
HYDRAULICS
MANAGEMENT
REDD CAPACITY
REINTRODUCTION
RESTORATION
SALMON
SPAWNING HABITAT
WATER