Columbia Basin Fish and Wildlife Program Columbia Basin Fish and Wildlife Program
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Project Summary

Project 2007-273-00 - Evaluate the effects of hyporheic exchange on egg pocket water temperature in Snake River fall Chinook salmon spawning areas
Project Number:
2007-273-00
Title:
Evaluate the effects of hyporheic exchange on egg pocket water temperature in Snake River fall Chinook salmon spawning areas
Summary:
The research to be conducted under this proposal will evaluate relationships among river discharge, hyporheic zone characteristics, egg pocket water temperature, and emergence timing of Snake River fall chinook salmon.
Proposer:
None
Proponent Orgs:
Pacific Northwest National Laboratory (Govt - Federal)
Starting FY:
2007
Ending FY:
2011
BPA PM:
None
Stage:
Area:
Province Subbasin %
Blue Mountain Snake Hells Canyon 100.00%
Purpose:
Programmatic
Emphasis:
RM and E
Focal Species:
Species Benefit:
Anadromous: 100.0%   Resident: 0.0%   Wildlife: 0.0%
Tags:
None
Special:
None
BiOp Association:
None

No photos have been uploaded yet for this project.

The table content is updated frequently and thus contains more recent information than what was in the original proposal reviewed by ISRP and Council.

Review: FY07-09 Solicitation Review

Council Recommendation

Assessment Number: 2007-273-00-NPCC-20090924
Project: 2007-273-00 - Evaluate the effects of hyporheic exchange on egg pocket water temperature in Snake River fall Chinook salmon spawning areas
Review: FY07-09 Solicitation Review
Approved Date: 10/23/2006
Recommendation: Do Not Fund
Comments:

Independent Scientific Review Panel Assessment

Assessment Number: 2007-273-00-ISRP-20060831
Project: 2007-273-00 - Evaluate the effects of hyporheic exchange on egg pocket water temperature in Snake River fall Chinook salmon spawning areas
Review: FY07-09 Solicitation Review
Completed Date: 8/31/2006
Final Round ISRP Date: None
Final Round ISRP Rating: Meets Scientific Review Criteria (Qualified)
Final Round ISRP Comment:
The proposal lays out a case for developing a better understanding of the effects of surface-hyporheic water exchange on the developmental rate and survival of fall Chinook eggs and alevins below the Hells Canyon dam complex, and whether operation of the dams can generate flow conditions that improve survival and accelerate embryonic development. The working hypothesis is that water releases from upstream storage reservoirs and the timing of spill can be adjusted to increase egg survival and cause fry to emerge earlier.

In general, the objectives are clearly stated and specific timelines are given. Our main concern had to do with sample size. Fourteen sites, 25% of the total number of "most used" spawning areas, have been selected (a map would have been helpful). While this seems like a plausible number of sites for a general survey of Chinook reproductive success, the proposal did not really address the question of how many sites would be needed to achieve the overall objective of developing a better understanding between egg survival, hyporheic flow dynamics, and modified reservoir operations. At $10-15K per sample site per year, it is important to sample enough sites to answer the central questions, but at some point adding sites may not yield much additional information. Nevertheless, as long as sample size is reasonably justified, this should be a worthwhile effort.
Documentation Links:

Legal Assessment (In-Lieu)

Assessment Number: 2007-273-00-INLIEU-20090521
Project Number: 2007-273-00
Review: FY07-09 Solicitation Review
Completed Date: 10/6/2006
In Lieu Rating: Problems Exist
Cost Share Rating: None
Comment: Evaluate benefits of changing discharge operations at Hells Canyon; Idaho Power required.

Capital Assessment

Assessment Number: 2007-273-00-CAPITAL-20090618
Project Number: 2007-273-00
Review: FY07-09 Solicitation Review
Completed Date: 2/27/2007
Capital Rating: Does Not Qualify for Capital Funding
Capital Asset Category: None
Comment: None

Project Relationships: None