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

Project 2007-256-00 - Physical and Biological Testing of a Flow Velocity Enhancement System
Project Number:
2007-256-00
Title:
Physical and Biological Testing of a Flow Velocity Enhancement System
Summary:
Natural Solution?s patented Flow Velocity Enhancement System has been developed to provide migration cues using mechanically generated iturbulent-flow fields. It is proposed that strategic placement of these flow fields will enchance smolt migration.
Proposer:
None
Proponent Orgs:
Natural Resources Conservation Service (USDA) (Govt - Federal)
Starting FY:
2007
Ending FY:
2011
BPA PM:
None
Stage:
Area:
Province Subbasin %
Basinwide - 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

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Review: FY07-09 Solicitation Review

Legal Assessment (In-Lieu)

Assessment Number: 2007-256-00-INLIEU-20090521
Project Number: 2007-256-00
Review: FY07-09 Solicitation Review
Completed Date: 10/6/2006
In Lieu Rating: Problems May Exist
Cost Share Rating: 3 - Does not appear reasonable
Comment: Flow velocity/enhancement equipment testing; Cowlitz river; other hydro operators authorized/required.

Capital Assessment

Assessment Number: 2007-256-00-CAPITAL-20090618
Project Number: 2007-256-00
Review: FY07-09 Solicitation Review
Completed Date: 2/27/2007
Capital Rating: Does Not Qualify for Capital Funding
Capital Asset Category: None
Comment: None

Independent Scientific Review Panel Assessment

Assessment Number: 2007-256-00-ISRP-20060831
Project: 2007-256-00 - Physical and Biological Testing of a Flow Velocity Enhancement System
Review: FY07-09 Solicitation Review
Completed Date: 8/31/2006
Final Round ISRP Date: None
Final Round ISRP Rating: Meets Scientific Review Criteria
Final Round ISRP Comment:
The problem regarding migrational passage problems of juvenile salmonids at hydroelectric projects is extensively described, and the rationale for potential passage benefits of an effective system is well defined. The "low flow" fish passage problem is identified in several subbasin plans. The proposal makes good use of studies in the basin that have described behavior of juvenile salmonids in response to flow, and identifies a device that might produce flows for guiding them to appropriate passage routes.

There is nothing quite comparable being funded through the Fish and Wildlife Program. The proposal includes reference to an existing research project, the Cowlitz Falls Fish Collection Facility (presumably funded by Tacoma Power Public Utility District (PUD)), which includes radio tagged juvenile salmonids used to evaluate the effectiveness of a trap above Cowlitz Falls Dam. Fish that escape the trap will be available for use in evaluation of the device's (eductor) effects on migrating fish. The trap is operated by WDFW. The operators will provide data on timing of fish migrations and other elements. The phased, systematic development of the eductor technology is good.

They propose to set up the turbulence-generating eductors, characterize the flows, observe fish-flow interactions with a Didson camera, and enumerate the guidance of fish into a trap. It is not clear how they will express the flows and the turbulence intensity, or what aspect of the generated flows will be related to fish behavior. For example, if they see a fish response, will they know what precise aspect of the flow field caused it? Unless they are able to focus on particular parameters (e.g., velocity difference between the spot where fish reacted and that in reservoir, or turbulence intensity or size), they will not know what to manipulate experimentally in Phase II. There is a need to get away from trial-and-error that characterizes many of these studies.

The proposal was responsive to earlier concerns (ISRP comment in 2003) that shear-related mortality might be a factor in this experimental system. This research has potential of facilitating or improving effectiveness of juvenile fish passage facilities in the basin such as the removable spillway weir (RSW).
Documentation Links:

Council Recommendation

Assessment Number: 2007-256-00-NPCC-20090924
Project: 2007-256-00 - Physical and Biological Testing of a Flow Velocity Enhancement System
Review: FY07-09 Solicitation Review
Approved Date: 10/23/2006
Recommendation: Do Not Fund
Comments:

Project Relationships: None