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200700300 - Dworshak Dam Resident Fish Mitigation

Sponsor: Idaho Department of Fish & Game

Budgets: FY07: $405,100 | FY08: $1,300,600 | FY09: $257,100

Short description: Improve resident fisheries as mitigation for losses and continuing impacts from construction and operation of Dworshak Dam by reducing entrainment, increasing kokanee size and abundance, and enhancing reservoir productivity.

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Final Council recommendation (Nov 2006)

Funding category: Expense

Recommended budgets: FY07: $160,000 | FY08: $160,000 | FY09: $160,000

Comment: The reduced budget addresses the biological objective regarding reservoir productivity, and the work element addressing the M&E effectiveness of the USACE’s Dworshak Reservoir nutrient enhancement project on increasing kokanee abundance, density, and growth.

ISRP final recommendation: Fundable


This is a clearly written proposal that presents a multi-pronged approach to improving the kokanee fishery in Dworshak Reservoir. In the response, the sponsors adequately explained their basis for concluding that underwater strobe lights will effectively reduce fish entrainment at Dworshak Dam. Project objectives focus on increasing kokanee size and abundance, reducing entrainment through Dworshak Dam, and enhancing reservoir productivity. The Clearwater Subbasin Plan (Problem 5, objective 1 - strategy 2) specifies the installation of strobe lights and defines research to minimize fish entrainment through Dworshak Dam. The Subbasin Plan defines research to investigate the effects of loss or lack of nutrients due to federal hydropower-related loss of anadromous salmonids, and evaluate nutrient enhancement alternatives (section 4.3.1 Aquatics: I. General, Proposal 1). The project methods appear reasonable, and the experimental design is defensible. The proposal describes links to other related projects including 1) the USACE Walla Walla District’s Dworshak Reservoir Nutrient Enhancement Project; 2) the Confederated Colville Tribes’ Chief Joseph Kokanee Enhancement Project (# 199501100) that is focused on assessing and reducing kokanee entrainment, monitoring kokanee abundance, and testing the effectiveness of underwater strobe lights at reducing fish entrainment; and 3) the Idaho Fish and Game studies of bull trout in the North Fork Clearwater, which is determining bull trout temporal and spatial distributions within Dworshak Reservoir.

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: Fundable when money available

Review group: Snake

Recommended budgets: FY07: $0 | FY08: $0 | FY09: $0

Comment: State Tier 2