Proposal Table of Contents
Section 1. General Administrative information
Section 2. Past accomplishments
Section 3. Relationships to other projects
Section 4. Objectives, tasks and schedules
Section 5. Budget
Section 6. References
Section 7. Abstract
Reviews and Recommendations
|Title of Project Proposal||Dworshak Dam Impacts Assessment and Fisheries Investigation|
|BPA Project Proposal Number||198709900|
|Business name of agency, institution,
or organization requesting funding
|Idaho Department of Fish and Game|
|Business acronym (if appropriate)||IDFG|
Proposal contact person or principal investigator
|Name||Melo A. Maiolie|
|Mailing Address||2750 Kathleen Ave.|
|City, State, Zip||Coeur d’Alene, ID 83814|
|Manager of program authorizing this project|
|Review Cycle||FY 1999|
|Short Description||Determines ways to minimize losses of fish into Dworshak Dam. Devices such as strobe lights, sound, selective water withdrawal are being tested; also impacts to resident fish caused by drawdowns & routine operations are evaluated.|
|Target Species||early spawning kokanee|
Sponsor listed no RPAs for this project proposal
NMFS and BPA did not associate any reasonable and prudent alternatives with this project proposal
|NPPC Program Measure Number(s) which this project addresses:|
|FWS/NMFS Biological Opinion Number(s) which this project addresses:|
|Other Planning Document References|
|Database Administrator notes on the history of this proposal form:||None|
|Type of Project (assigned by CBFWA Analysts):||resident|
|1. Increase the kokanee population to 30 to 50 adults/ha by reducing entrainment losses through the use of strobe lights.||a. Install strobe lights in the forebay of Dworshak Dam near the reservoir outlets.|
|1. Increase the kokanee population to 30 to 50 adults/ha by reducing entrainment losses through the use of strobe lights.||b. Operate lights throughout the winter and spring.|
|1. Increase the kokanee population to 30 to 50 adults/ha by reducing entrainment losses through the use of strobe lights.||c. Measure kokanee densities in the forebay, and in the strobe lighted area.|
|d. Monitor entrainment of kokanee using hydroacoustics .|
|e. Estimate the kokanee population in the reservoir and calculate the annual survival rate to determine the population effect of entrainment losses.|
|2. Determine the effect of reservoir drawdowns for anadromous fish flows and flood control on the kokanee population.||a. Monitor kokanee population by trawling, hydroacoustics and spawner counts, and relate to changes in dam operation.|
|3. Improve sportfishing on the reservoir to 150,000 angler hours by enhancing reservoir fish habitat through the development of rule curves.||a. Monitor kokanee population by trawling, hydroacoustics and spawner counts, and relate to changes in dam operation.|
|. Improve sportfishing on the reservoir to 150,000 angler hours by enhancing reservoir fish habitat through the development of rule curves.||b. Provide biological information to Nez Perce Tribe for use in their modeling work.|
|Objective||Start Date||End Date||Measurable Biological Objectives||Milestone||FY 2000 Cost %|
|Item||Note||FY 1999 Cost|
|Total Itemized Budget||$651,000|
|Total FY 1999 project cost||$651,000|
|Amount anticipated from previously committed BPA Funds||$ 0|
|Total FY 1999 budget request||$651,000|
|FY 1999 forecast from 1998||$ 0|
|% change from forecast||0.0%|
|Total Outyear Budgets||$467,600||$460,000||$200,000||$200,000|
n/a or no information
Dworshak Reservoir was built in 1973 by the Army Corps of Engineers. This 718' high dam completely blocked the North Fork of the Clearwater River for anadromous fish and greatly changed the composition of the resident fishery. Our project goal is to improve the resident sport fisheries in the reservoir. Our objective is to minimize entrainment losses of fish into the turbine intakes and reservoir outlets so that a density of 30 to 50 adult kokanee/ ha can be maintained on an annual basis. Reducing entrainment losses of kokanee will also benefit other species by: lessening entrainment of cutthroat, bull trout, and rainbow trout, providing more prey (small kokanee) for bull trout, and allow nutrients (in the form of kokanee spawners) to move upstream into the tributaries. We also propose to monitor the kokanee population annually and relate changes to the operation of the dam. This empirical information can then be used to assist in the development of rule curves for the reservoir. Our methods are to test behavioral avoidance devices to see if kokanee, and other fish, can be scared away from the intakes to the dam. Strobe light testing began in 1997. Kokanee avoided the strobe lights for the entire night and remained 100 to 130 feet away from them in an open lake environment. The next phase (1999) is to test the lights on-site. Lights will be installed in front of the three turbine intakes on the dam. Density of fish will be measured near the lights, in the forebay of the reservoir, and throughout the entire reservoir to determine population effects of entrainment losses. Fish densities will be determined using mobile, split-beam hydroacoustics. Fixed location hydroacoustics will be used to determine fish losses into the turbine intakes. Hydroacoustic have been used by project personnel since 1993 to monitor the fish population and have been proven to be highly precise.
This information was not provided on the original proposals, but was generated during the review process.
|CBFWA: Resident Fish Review Comments||Recommendation:
Fundable if funds available
May 13, 1998
|[There are no budget numbers associated with this review.]|
Presentation: Dworshak Dam on the North fork Clearwater River completely blocks upstream passage and is used for power production. Annual drawdowns can be as much 155 feet. Dworshak Reservoir can support a self-sustaining kokanee population of about 30 - 50 adults per hectare. Kokanee use the tributaries for spawning. Winter kokanee tend to school and high entrainment losses during high flow periods are the problem. This project is based on past research on entrainment. IDFG tested sound as a possible "anti-entrainment" device but it didn't work. Strobe light tested in a wild environment were effective up to 30 meters away, but that is not enough distance at Dworshak. Strobe tests in clear water show kokanee stayed away up to 140 meters. It is necessary to test the lights in turbid water during spring flows. The next phase is to install strobe lights on dam. Monitoring (4 times per year) will include looking at kokanee behavior patterns at the turbine intakes; conducting spawner counts; conducting hydrocoustic estimates over the length of reservoir; and trawling to evaluate the physical characteristics of the fish.
Is there an overall mitigation plan for the upper Dworshak area? Answer: The Dworshak Mitigation Plan (an agreement with the Corps) says to stock 100,000 of something annually, but we have never really stocked this much. Solving the entrainment losses are a high priority. NPT and University staff collaborate. There is an earnest effort to use past knowledge to preserve this fishery.
Is there a way of testing the lights on one rather than all of the turbines? Could you coordinate with the Corps to test one turbine first? Answer: No. The 3 turbines are side by side and run at different times.
Will the turbid water test be completed before the FY 99 budget cycle? Answer: Entrainment occurs in March, before the spring runoff and is a problem throughout the runoff season.
What happens if the strobe test doesn't work ? Answer: The project disappears. In order to be considered a success, the strobes need to work in muddy water and deter 50% of the fish most of the time.
Shouldn't NMFS pay for this because the summer drafts are used for temperature control for fall chinook? Answer: Summer drafts are better for kokanee but not for public recreation.
Have you done any public scoping? Answer: No, but it shouldn't be a problem. The locals want the entrainment problem solved. The most serious kokanee losses are related to winter flood control releases.
Will the Corps fund the O&M on the lights? How much will it be? Answer: The estimated O&M is much cheaper than other alternatives but the Corps hasn't agreed to fund O&M yet.
Screening Criteria: Yes
Technical Criteria: No. An overall Council-approved Mitigation Implementation Plan is needed for the Dworshak Reservoir.
Programmatic Criteria: Yes
General Comment: Can NMFS/anadromous fish dollars pay part of this project since it is mitigation for the impacts of salmon recovery actions? Can the full light array be delayed until the turbid water test is completed?
|CBFWA Funding Recommendation||Recommendation:
May 13, 1998
Light array task deferred
|ISRP Review , ISRP 1998-1||Recommendation:
Jun 18, 1998
|[There are no budget numbers associated with this review.]|
This proposal is for a fish management study that primarily considers the use of strobe lights to guide fish with the primary purpose to reduce entrainment and improve a reservoir fishery. The proposal does not clearly relate what is to be measured to the desired goals. There is a need for the information to be collected on kokanee populations and dam operations, but the problem with fish populations is not well described. In particular, the proposal does not establish that entrainment is causing the problem. It also does not describe the effects of the work on other fish and, generally, does not provide clear descriptions of how this project relates to others.
|NW Power and Conservation Council's FY 2006 Project Funding Review||Funding category:
|Sponsor (IDFG) Comments (Go to Original on NPCC Website):
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