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MetaData for Willamette Biological Opinion Chinook Steelhead Outmigration 2012 Annual Report
Willamette Biological Opinion Chinook Steelhead Outmigration 2012 Annual Report
Identification Information
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Citation
- Originator: ODFW
- Publish Date: September 2013
- Online Link:
None
- BPA Project #:
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Contact Information
- Agency: Oregon Department of Fish and Wildlife
- Name: Jeremy Romer
- Job Position: Assistant Project Leader
- Telephone: 541-757-4113
- E-Mail Address: jeremy.d.romer@odfw.oregon.gov
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Description
- Abstract: To aid in the development of downstream passage options for juvenile salmonids at Upper Willamette reservoirs, we present results from screw trapping operations conducted upstream and downstream of USACE project dams in 2012. Traps upstream of dams were located on the North Santiam River upstream of Detroit Reservoir, the South Santiam River upstream of Foster Reservoir, the South Fork McKenzie River upstream of Cougar Reservoir, and the Middle Fork Willamette River upstream of Lookout Point Reservoir. Traps were also located below Detroit Dam, Foster Dam, Cougar Dam, and Lookout Point Dam.
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- Purpose: Spring Chinook salmon Oncorhynchus tshawytscha and winter steelhead O. mykiss in their respective upper Willamette River Evolutionarily Significant Units (ESU) are listed as threatened under the Endangered Species Act (NMFS 1999a; NMFS 1999b). As a result, the National Marine Fisheries Service (NMFS) must evaluate any action taken or funded by a federal agency to assess whether the actions are likely to jeopardize threatened and endangered species, or result in the destruction or impairment of critical habitat. The 2008 Willamette Project Biological Opinion (BiOp; NMFS 2008) outlined the impacts of the Willamette Valley Project (WVP) on Upper Willamette River (UWR) Chinook salmon and winter steelhead. The WVP includes 13 dams and associated reservoirs managed jointly by the U.S. Army Corps of Engineers (USACE), Bonneville Power Administration (BPA), and Bureau of Reclamation, collectively known as the Action Agencies. The Biological Opinion detailed specific actions, termed Reasonable and Prudent Alternative (RPA) measures that would “…allow for survival of the species with an adequate potential for recovery, and avoid destruction or modification of critical habitat”.
A number of RPA measures in the Willamette Project BiOp are associated with downstream fish passage through project reservoirs and dams. These include RPA measures 4.2 (winter steelhead passage), 4.7 (adult fish release sites above dams), 4.8 (interim downstream fish passage through reservoirs and dams), 4.9 (head-of-reservoir juvenile collection prototype), 4.10 (downstream juvenile fish passage through reservoirs), 4.12 (long-term fish passage solutions). Currently, numerous passage designs and operational flow modifications are under consideration to improve downstream passage and survival of juvenile migrants. Improving passage requires a basic understanding of the size, timing, and abundance of juvenile salmonids that enter and exit the reservoirs.
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- Time Period of Content:
- Geographic Extent: North Santiam, South Santiam, South Fork McKenzie, and Middle Fork Willamette Rivers
- Status: Final
- Use Constraints:
- Format: PDF
Data Quality Information
- Lineage-Source: Cooperative Agreement: W9127N-10-2-0008
Task Order Number: 0006
Work Completed for Compliance with the 2008 Willamette Project Biological Opinion, USACE funding: 2012
Data Information
- No data information was supplied.
Entity and Attribute Information
- Attributes Description: Field attribute information is available in the database table field descriptions.
Is a physical copy maintained for reference at Headquarters?
Unknown
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