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199602000 - Pit Tagging Spring/Summer Chin

Sponsor: Columbia River Fisheries Program Office

Budgets: FY07: $1,757,000 | FY08: $1,788,425 | FY09: $1,831,615

Short description: Adult and juvenile PIT tag recovery data are analyzed to compare survival estimates for transported fish of known origin, downriver stocks, wild and hatchery transported fish and fish handled and not handled at dams.

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Final Council recommendation (Nov 2006)

Funding category: Expense

Recommended budgets: FY07: $915,444 | FY08: $0 | FY09: $0

Comment: Funding in 07 to produce a ten-year retrospective report for ISAB and Council review and for tagging consistent with tagging in FY06.

ISRP final recommendation: Fundable (Qualified)


The response by the project sponsors was adequate, and they agreed with all ISRP comments and recommendations that were mostly taken from the recent ISAB review report (ISAB 2006-3). One of the major recommendations in that report was that the 10-year ongoing Comparative Survival Study (CSS) project lacked a holistic perspective and needed a summary report providing an in-depth description of methods and detailed analyses and interpretation of the data in a retrospective style. The CSS project responded that they would produce such a report in 2007. As most of the comments and recommendations in this review will be addressed in that report, it is critical that the ISRP/ISAB be involved in review of that report when it is released. The ISRP agreed with critics who express concern that two downriver sites (Carson Hatchery and John Day River) are probably insufficient to give accurate upriver-downriver comparisons of SARs. This concern is bolstered by the variability among upriver hatcheries shown by the CSS data. For this upriver-downriver comparison to be generally accepted, it seems prudent to add more downriver sites in the future. In response, the CSS will add another downriver site in the Warms Springs River for wild Chinook tagging for 2007 to complement the ongoing tagging in the John Day River. This is a positive action, however, additional downriver hatchery sites are even more important to add because at this time, five upriver hatcheries are being used as tagging sites and only one downriver. There needs to be better hatchery to hatchery comparisons, and adding several lower river hatcheries which show a range in return rates will provide a more realistic comparison in survival rates. If additional downriver tagging sites are to be added to the CSS, the project sponsors indicate that more funding must be made available, and the ISRP agrees that the budget will need to be adjusted accordingly. Reporting of results by the project has been good with Annual Reports to BPA for each year of the project. There is potential for production of peer reviewed papers considering project results and this should be considered in the near future.

Response loop edit

See the sponsor's revised proposal from the response loop. You'll be taken to CBFWA's proposal system in Section 10 where most sponsors uploaded revised narratives or other responses to the ISRP comments.

State/province recommendation: MS: Core Program

Review group: MSRT

Recommended budgets: FY07: $1,365,000 | FY08: $1,365,000 | FY09: $1,365,000

Comment: This is the Comparative Survival Study (CSS). All hatchery fish are marked through this study and substantial numbers of wild fish. This project coordinates their tagging with 199302900 to insure efficiency. These two projects work together. The increase in budget supports marking Steelhead. The fish and wildlife managers have consistently recommended adding steelhead to this project in the past.