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

Project 2007-318-00 - Knapp-Wham and Hanan Detwiler Irrigation Consolidation and Well Drilling
Project Number:
Knapp-Wham and Hanan Detwiler Irrigation Consolidation and Well Drilling
See Contract Description.
Proponent Orgs:
Cascadia Conservation District (SWCD)
Starting FY:
Ending FY:
Province Subbasin %
Columbia Cascade Entiat 100.00%
Focal Species:
Chinook - Upper Columbia River Spring ESU
Steelhead - Middle Columbia River DPS
Steelhead - Upper Columbia River DPS
Trout, Bull
Species Benefit:
Anadromous: 90.0%   Resident: 10.0%   Wildlife: 0.0%
BiOp Association:
FCRPS 2008 – view list of FCRPS 2008 BiOp Actions

Tributary Habitat Implementation 2007 to 2009



Dimensions: 1767 x 1172



Dimensions: 1718 x 1090



Dimensions: 1173 x 1635

Summary of Budgets

To view all expenditures for all fiscal years, click "Project Exp. by FY"

To see more detailed project budget information, please visit the "Project Budget" page

No Decided Budget Transfers

Pending Budget Decision?  No

Actual Project Cost Share

Current Fiscal Year — 2024
Cost Share Partner Total Proposed Contribution Total Confirmed Contribution
There are no project cost share contributions to show.
Previous Fiscal Years
Fiscal Year Total Contributions % of Budget
2009 $211,380 61%
2008 $521,036 91%
2007 $117,800 24%


The table below contains contracts with the following statuses: Active, Closed, Complete, History, Issued.
* "Total Contracted Amount" column includes contracted amount from both capital and expense components of the contract.
Expense Contracts:
Number Contractor Name Title Status Total Contracted Amount Dates
35115 SOW Chelan County 2007-318-00 EXP KNAPP WHAM CULTURAL CONTRACT History $8,356 6/8/2007 - 4/30/2008
35426 SOW Cascadia Conservation District 200731800 EXP UPA KNAPP-WHAM HANAN DETWILER History $551,646 7/1/2007 - 4/30/2010

Annual Progress Reports
Expected (since FY2004):1
On time:1
Status Reports
On time:2
Avg Days Late:43

                Count of Contract Deliverables
Earliest Contract Subsequent Contracts Title Contractor Earliest Start Latest End Latest Status Accepted Reports Complete Green Yellow Red Total % Green and Complete Canceled
35115 2007-318-00 EXP KNAPP WHAM CULTURAL CONTRACT Chelan County 06/08/2007 04/30/2008 History 1 2 0 0 0 2 100.00% 0
35426 200731800 EXP UPA KNAPP-WHAM HANAN DETWILER Cascadia Conservation District 07/01/2007 04/30/2010 History 10 10 0 0 0 10 100.00% 0
Project Totals 11 12 0 0 0 12 100.00% 0

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: 2007-318-00-NPCC-20090924
Project: 2007-318-00 - Knapp-Wham and Hanan Detwiler Irrigation Consolidation and Well Drilling
Review: FY07-09 Solicitation Review
Approved Date: 10/23/2006
Recommendation: Fund
Comments: ISRP fundable qualified: Address ISRP concerns during contracting.

Independent Scientific Review Panel Assessment

Assessment Number: 2007-318-00-ISRP-20060831
Project: 2007-318-00 - Knapp-Wham and Hanan Detwiler Irrigation Consolidation and Well Drilling
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:
This proposal would (1) eliminate one of the two main river irrigation diversions in the lower Entiat River (Hanan Detwiler), (2) move the expensive, high capacity rotary screen from this diversion to the upper diversion (Knapp-Wham) which has an undersized screen, (3) replace the two existing push-up dams with full channel-spanning rock cross-vanes to impound water and create holding pools, and (4) replace a 3.4 mile open irrigation ditch with a pipe network to distribute irrigation water to farmers.

The ISRP is not requesting a response, but the proposal would be improved by addressing the following comments:

Two large irrigation diversions have been identified as high priority sites for restoration, which makes this project attractive. A stronger case for the work could have been made that included a better estimate of how much water will actually be saved in the river during irrigation season, and what species and life stages are likely to benefit from these incremental flows and presumably improved water quality.

Although the theoretical increase in flow in the lower Entiat during the irrigation season is claimed to be 2-6 cfs, the proposal admits that the realized incremental flow savings will be less. In addition to re-engineering the water intake, new wells are being added to the system, and the contribution of those wells to flow savings is also uncertain. The proposal states that these two irrigation systems are the largest in the Entiat subbasin and have been assigned highest priority for improvement in the Entiat Watershed Planning Unit, which underscores the value of this project. However, regardless of the amount of water being conserved, it is important that instream flows not be appropriated by junior water right holders downstream. Therefore, project managers should provide some evidence that conserved water will remain in the river. Alternatively, it might be cost-effective to purchase water rights.

The engineering aspects of the proposal were adequately described, but the habitat and fish population benefits were less clear. Since both existing diversions are screened, how much will the consolidation really lead to a reduction in juvenile salmonid entrainment? Will the flow savings primarily benefit spawning, rearing or both -- and to which species? Have pesticide residues been identified in irrigation return water of the existing canal systems that this project will help reduce?

It is stated that "both physical and biological changes will be noted post-implementation", but there was no elaboration of what this meant. The budget includes a request for a dry suit for snorkel surveys in 2008-2009 during March, May, and September, but additional details were not provided. Monitoring water quality (temperature, pesticide residues) in irrigation return water would help verify the effectiveness of this project.
Documentation Links:

Legal Assessment (In-Lieu)

Assessment Number: 2007-318-00-INLIEU-20090521
Project Number: 2007-318-00
Review: FY07-09 Solicitation Review
Completed Date: 10/6/2006
In Lieu Rating: No Problems Exist
Cost Share Rating: None
Comment: Wells, other irrigation consolidation; assume irrigation entities not already required to do to address passage barriers.

Capital Assessment

Assessment Number: 2007-318-00-CAPITAL-20090618
Project Number: 2007-318-00
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

Name Role Organization
Cecilia Brown (Inactive) Project Manager Bonneville Power Administration
Michael Rickel (Inactive) Project Lead Cascadia Conservation District
Peggy Entzel Supervisor Cascadia Conservation District
Paul Krueger (Inactive) Supervisor Bonneville Power Administration