Spring Chinook Salmon in the Willamette and Sandy Rivers, October 2003 through September 2004

Identification Information

Citation

Originator: Schroeder, R.K. and K.R. Kenaston

Publish Date: 2004

Online Link: http://nrimp.dfw.state.or.us/crl/default.aspx?pn=AnnualProgressReports

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Kirk Schroeder

Job Position: Project Leader

Telephone: (541)757-4263 x251

E-Mail Address: Kirk.Schroeder@oregonstate.edu

Description

Abstract: The Oregon Fish and Wildlife Commission adopted the Native Fish Conservation Policy (ODFW 2003a) and the Hatchery Management Policy (ODFW 2003b) in part to reduce adverse impacts of hatchery programs on wild native stocks. The Native Fish Conservation Policy recognizes that naturally produced native fish are the foundation for long-term sustainability of native species and hatchery programs, and the fisheries they support. In the past, hatchery programs and fish passage issues were the focus of spring Chinook salmon management in the Willamette and Sandy basins. Limited information was collected on the genetic structure among basin populations, on abundance and distribution of natural spawning, on rearing and migrating of juvenile salmon, or on strategies for reducing risks that large hatchery programs pose for wild salmon populations. This study was implemented to gather this information. Annual reports (available for 1996-2004 for this project) summarize data and are available at the above website.

Purpose: Objective 1. Determine the numerical status of existing natural populations and develop methods for monitoring that status. Determine if these populations belong to one or more gene conservation groups. Objective 2. Decrease mortality of wild fish in fisheries by determining feasibility of catch and release sport fisheries and by exploring options for reducing mortality in commercial fisheries. Objective 3. Reduce the risk that large hatchery programs pose for natural populations by developing ways of decreasing interactions between wild and hatchery chinook in streams and by determining need for more wild fish in hatchery broodstocks. Objective 4. Protect existing natural production areas by defining temporal and spatial use patterns by life stages of spring chinook and identify the habitat/environmental attributes conducive to that use. Objective 5. Increase natural production by improving habitat in existing production areas and by re-establishing populations where they were found historically.

Time Period of Content: 2003-2004 Progress Report

Geographic Extent: Main-stem Willamette River at Willamette Falls, Middle Fork Willamette, McKenzie, North Santiam, South Santiam, Molalla, Clackamas, and Sandy rivers.

Status: Final

Use Constraints:

Format: PDF File

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Is a physical copy maintained for reference at Headquarters? Yes