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

Project 2010-038-00 - Lolo Creek Permanent Weir Construction
Project Number:
Lolo Creek Permanent Weir Construction
The Lolo Creek Permanent Weir Design and Construction Project (Lolo Permanent Weir) is being implemented by NPT and BPA to replace the current adult trapping system located on Lolo Creek, near Weippe, Idaho. As a part of the required collection and monitoring program, NPT has been operating a manually placed picket weir, supported by tripods placed in the stream bed. The existing system does not currently meet NPT’s needs with regard to effectiveness, durability, and safety. In many cases, NPT is unable to trap fish when flows are greater than 500 cfs due to an inability to deploy the pickets at higher flows. When already in place, an increase of flows above 500 cfs has resulted in significant damage and loss of trapping effectiveness. Personnel safety has been at risk during these conditions when attempting to deploy the system too early or when trying to salvage the trap after high flow events.

The new collection system will be designed to overcome the challenges currently identified at the site in addition to improving overall collection efficiency and trap and transfer operations. The new weir will be a permanent system and will eliminate the need for annual construction efforts. When the weir is not in operation, it will remain in the river in the down position. Fish collection and monitoring provisions will be facilitated by a landside holding area. With the holding area placed near the shoreline, access and durability of the system will be markedly improved and will allow operations personnel greater efficiency and safety.
Proponent Orgs:
Nez Perce Tribe (Tribe)
Starting FY:
Ending FY:
Province Subbasin %
Mountain Snake Clearwater 100.00%
Artificial Production
RM and E
Focal Species:
Chinook - All Populations
Chinook - Snake River Spring/Summer
Steelhead - All Populations
Steelhead - Snake River DPS
Species Benefit:
Anadromous: 100.0%   Resident: 0.0%   Wildlife: 0.0%

No photos have been uploaded yet for this Project.

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


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
23380 REL 7 SOW HDR Engineering, Inc. 201003800 EXP LOLO CREEK PERMANENT WEIR DESIGN & CONSTRUCTION History $403,043 8/16/2010 - 6/30/2013

Annual Progress Reports
Expected (since FY2004):1
On time:1
Status Reports
On time:3
Avg Days Late:5

                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
23380 REL 7 201003800 EXP LOLO CREEK PERMANENT WEIR DESIGN & CONSTRUCTION HDR Engineering, Inc. 08/16/2010 06/30/2013 History 7 6 0 0 1 7 85.71% 0
Project Totals 7 6 0 0 1 7 85.71% 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: Fast Track ISRP Review 2010

Independent Scientific Review Panel Assessment

Assessment Number: 2010-038-00-ISRP-20100622
Project: 2010-038-00 - Lolo Creek Permanent Weir Construction
Review: Fast Track ISRP Review 2010
Completed Date: None
First Round ISRP Date: 2/24/2010
First Round ISRP Rating: Meets Scientific Review Criteria (Qualified)
First Round ISRP Comment:

This is a fast-track proposal to design and construct a permanent weir in Lolo Creek, tributary to the Clearwater River in north-central Idaho. The weir will be used as a monitoring and evaluation tool to collect adult return information on B-run steelhead (Oncorhynchus mykiss) and spring Chinook salmon (O. tshawytscha). Snake River B-Run steelhead population status and trend data are required under RPA 50.6. The proposal deals only with design and construction of the weir, which will be done by a subcontractor. After construction, weir operation and data collection will occur under the existing NPTH M&E project (198835003), for which a categorical review proposal for assessing steelhead supplementation effectiveness is pending. Over the past seven years the Nez Perce Tribal Hatchery Monitoring & Evaluation project has operated a temporary weir in Lolo Creek. It is intended to serve three primary functions for the Nez Perce Tribal Hatchery program (NPTH; 1983-350-000): broodstock collection, adult monitoring and evaluation, and manipulation/control of hatchery and natural composition of spawners, i.e., exclusion of strays. Current results with the temporary weir, however, seem probably not worth the resources devoted to it. In each of the last several years, it has captured just a few dozen late-moving Chinook and no steelhead. Recently, it has been installed in June and sometimes not until July. The need for a permanent, properly operating weir is clear. The proposal makes the point that Lolo Creek has one of the smaller B run steelhead populations and is therefore more feasible to weir than other situations. Also, there is need to monitor Chinook salmon as part of the supplementation program’s evaluation. Some doubt exists, however, about whether even the proposed permanent weir can function well enough. The proposal states that "given high spring flows and debris load, we anticipate continuous operation of the permanent weir will not be possible over the return period of steelhead." Presumably, this might apply to Chinook, as well. Given that, the proposal could be improved by presenting evidence, such as history of flood timing and duration, about expected disruption of weir operation. Will it, at least in most years, operate properly during enough of the return period to yield an adequate proportion of the run (and if data on individual fish are needed, an unbiased sample), or will it often only catch the tail end of the Chinook run and few if any steelhead, like the temporary weir now does? What has been the success (and failings) of permanent weirs constructed similarly to the proposed weir and installed in similar streams? Will the proposed weir be able to be used to sample out-migrating juvenile steelhead and Chinook? If not, why?

Documentation Links:
Review: RME / AP Category Review

Council Recommendation

Assessment Number: 2010-038-00-NPCC-20110708
Project: 2010-038-00 - Lolo Creek Permanent Weir Construction
Review: RME / AP Category Review
Proposal: RMECAT-2010-038-00
Proposal State: Pending BPA Response
Approved Date: 6/10/2011
Recommendation: Fund
Comments: Implement per April-May Council decisions 2010 (fast-track). Constuction date is uncertain due to Wild and Scenic River designation.
Council Condition #1 April-May 2010 Council decision (fast-track) as follows: Capital-type project for a one-time weir construction. BPA and sponsor to address ISRP qualification regarding environmental conditions and weir operations. Budget request is for 2010 and 2011 only. Anything outside of final design & construction will be expense. O&M of the weir will be part of the NPT Hatchery M&E project.

2008 FCRPS BiOp Workgroup Assessment

Assessment Number: 2010-038-00-BIOP-20101105
Project Number: 2010-038-00
Review: RME / AP Category Review
Proposal Number: RMECAT-2010-038-00
Completed Date: None
2008 FCRPS BiOp Workgroup Rating: Supports 2008 FCRPS BiOp
Comments: BiOp Workgroup Comments: No BiOp Workgroup Comments

The BiOp RM&E Workgroups made the following determinations regarding the proposal's ability or need to support BiOp Research, Monitoring and Evaluation (RME) RPAs. If you have questions regarding these RPA association conclusions, please contact your BPA COTR and they will help clarify, or they will arrange further discussion with the appropriate RM&E Workgroup Leads. BiOp RPA associations for the proposed work are: ( )
All Questionable RPA Associations ( ) and
All Deleted RPA Associations (50.5 50.6)
Proponent Response:

Project Relationships: None

Name Role Organization
Jonathan McCloud Project Manager Bonneville Power Administration
Jay Hesse Supervisor Nez Perce Tribe
Sherman Sprague Project Lead Nez Perce Tribe
Sherry Jeffery Administrative Contact HDR Engineering, Inc.
Ed Donahue (Inactive) Supervisor Fishpro, Inc.
Daniel Gambetta Env. Compliance Lead Bonneville Power Administration
Becky Holloway (Inactive) HDR Engineering, Inc.
Russell Scranton Project SME Bonneville Power Administration