BPA Fish and Wildlife FY 1997 Proposal

Section 1. Administrative
Section 2. Narrative
Section 3. Budget

see CBFWA and BPA funding recommendations

Section 1. Administrative

Title of project
Diversion Screen Improvement to Effect a Reduced Visual Impact in Scenic Areas

BPA project number   5501000

Business name of agency, institution or organization requesting funding
Clouston Energy Research

Sponsor type   OR-Consultant

Proposal contact person or principal investigator

BPA technical contact   , EWN

Biological opinion ID   

NWPPC Program number   10.2C, 13.1F, 2.2C, 7.1C

Short description
An engineering modification to the diversion screen design. The focus is on the drive component (i.e.. the large paddle wheel) and improved debris removal. Collaboration with the ODF&W John Day Fish Screen Shop in fabrication and test tasks.

Project start year   1997    End year   1997

Start of operation and/or maintenance   1997

Project development phase   Implementation

Section 2. Narrative

Related projects
None identified.

Project history

Biological results achieved

Annual reports and technical papers

Management implications

Specific measureable objectives
Because concern has been expressed to Bonneville Management regarding the visual
impact that diversion screens present, a discussion on a remedy resulted. The large
paddle wheel presents the greatest silhouette noticed in the scenic area. A valid
engineering modification has been suggested, it will eliminate the large paddle wheel
with a low cost, perhaps lower cost mechanical method. The second modification
would allow improved debris removal from the drum-screen. Therefore, the acceptance
of screening will improve due to water rights concern over quantity delivered through the
screens.

Testable hypothesis
We can expect that the force of water flowing through the screen be sufficient to turn
a paddle wheel of a different configuration within the screen-drum. If the contact area
is equal to or greater than the external type paddle wheel. If larger volume of water is
flowing through the screen between 50- 75% of the height. What is the optimum height
for this design?

Underlying assumptions or critical constraints
Approach velocity must be acceptable to NMFS to maintain non impingement of smolt.

Methods
Within the screen-drum, an axle within the bearing sleeve that supports the drum will
have paddles. Although not as high as the typical paddle wheel currently in use the area
of force contact can be as great or greater. The new paddle can have curvature, a different orientation and surface changes. The axle has gears typically at a 10 to 1 ratio.
The long drive shaft and large paddle wheel will be eliminated with this improvement. Discussion with Coby Moulton the Manager of the Oregon Department of Fish & Wildlife's John Day Fish Screen Shop, has stated interest in collaboration in Fish
Screen improvement and development projects.

Brief schedule of activities
A Computational Fluid Dynamics (CFD) study task can be accomplished at Portland
State University's Civil Engineering Department. The award winning software from the
National Aeronautical and Space Administration (NASA) called INS3D as an "in kind"
grant has been given in support of three demensional engineering studies. And in support
of improvement efforts to Fish Screens for endangered species of salmon fish. NASA's granting the use of INS3D was effected by the efforts of Clouston Energy Research and
Federal Technology Transfer groups. A physical fabrication and testing task can be coordinated with local BPA approved
contractors and Clouston Energy Research. Ownership discussion or waiver is suggested.

Biological need
The need for diversion screens has been well established. No definate design has been
included in regulations. Only certain requirements must be met as outlined by the National Marine Fisheries Service. One of the goals of the Northwest Power Planning
Council is to conserve genetic diversity of the endangered species in the native habitat.
Because of livestock watering and irrigation ditches, screening must be implemented
or large loss of populations of salmon offspring will perish.

Critical uncertainties
None identified.

Summary of expected outcome
The expected result of the screen improvements will be lower cost and much lower visual impact of scenic areas.

Dependencies/opportunities for cooperation
A CFD task is optional with Portland State University Civil Engineering Professors and
students. Collaboration with ODF&W's John Day Fish Screen Shop is available.
Engineering students can become more knowledgeable of methods of implimentation
of endangered species rescue and improved civil engineering planning.

Risks
None identified.

Monitoring activity
Initial monitoring by Battelle Pacific Northwest Lab can be effected by a task order. During normal operation and maintenance activities continued monitoring can be with State agencies (ex. ODF&W) or private contractors (ex. Trout Unlimited) for an
independent review. Clouston Energy Research will be available as well.

Section 3. Budget

* For most projects, Authorized is the amount recommended by CBFWA and the Council. Planned is amount currently allocated. Contracted is the amount obligated to date of printout.

Funding recommendations

CBFWA funding review group   System Policy

Recommendation    Tier 3 - do not fund