Download - Insera elj's on the nooksack victor insera
Engineered Log Jams in the North and South Fork Nooksack
Lone Tree Phases I, II, and IIA
Kalsbeek, Todd and Sygitowicz Creeks, and Van Zandt
Victor Insera, Watershed Restoration Coordinator
Why Engineered Log Jams?
Why Engineered Log Jams?1. The South Fork Chinook population is
considered to have the highest extinction risk of the 22 Puget Sound populations.
Why Engineered Log Jams?1. The South Fork Chinook population is
considered to have the highest extinction risk of the 22 Puget Sound populations.
2. Both Chinook populations have cultural importance and are essential for recovery.
Why Engineered Log Jams?
3. Degraded habitat through in-stream wood removal and other detrimental factors over past 100 years.
1. The South Fork Chinook population is considered to have the highest extinction risk of the 22 Puget Sound populations.
2. Both Chinook populations have cultural importance and are essential for recovery.
Why Engineered Log Jams?
3. Degraded habitat through in-stream wood removal and other detrimental factors over past 100 years.
4. Reduced wood recruitment from removal of large riparian trees throughout the watershed.
1. The South Fork Chinook population is considered to have the highest extinction risk of the 22 Puget Sound populations
2. Both Chinook populations have cultural importance and are essential for recovery.
Project Goals and Objectives
Project Goals and Objectives
1. Address the limiting factors affecting spawning and incubation in the North Fork and adult holding in the South Fork.
Project Goals and Objectives
1. Address the limiting factors affecting spawning and incubation in the North Fork and adult holding in the South Fork.
2. Protect existing channel islands (North Fork).
Project Goals and Objectives
1. Address the limiting factors affecting spawning and incubation in the North Fork and adult holding in the South Fork.
2. Protect existing channel islands (North Fork).
3. Enhance side channel habitat (North Fork).
Project Goals and Objectives
1. Address the limiting factors affecting spawning and incubation in the North Fork and adult holding in the South Fork.
2. Protect existing channel islands (North Fork).
3. Enhance side channel habitat (North Fork).
4. Create scour pools with cover for cold water refugia (South Fork).
Layout of Log Jams and Side Channel
Tim Abbe (Entrix) Overseeing Placement of Uprights for Four-Sided Structure
Construction of One-Sided Structure
October 2008 - Enhanced Side Channel
Phase I
Phase II
Phase IIA
Staging Area August 2008(Peak Flow of 500 CFS)
Staging Area November 2008(Peak Flow of 4000 CFS)
Staging Area February 2009(Peak Flow of 220 CFS)
Staging Area August 2009 Peak Flow (430 CFS)
South Fork Nooksack River Valley
Issues
• Pool frequency is low, and existing pools are generally rip-rap formed and lack complex woody cover.
• Summer water temperatures regularly approach lethal limits for chinook.
• Riparian corridor is predominantly private agricultural property.
Restoration Approach
• Create scour pools with complex cover for adult holding and juvenile rearing.
• Increase availability of temperature refuges by promoting pool formation in areas of cool water influence.
• Provide immediate benefit while habitat-forming processes recover.
Gus Kays (Herrera) & Treva Coe (NNR) Staking Pile Locations
Enhanced Natural Jam Along Right Bank
July 21, 2008
July 31, 2008
Nov 12, 2008Peak Flow 8,500 CFS
Temperature Measurements along surface and bottom of South Fork along backwater reach associated with ELJ’s, July 17, 2009
Sygitowicz Creek Reach
•Constructed 7 structures to promote pool development and increase wood cover near the confluence of Sygitowicz Creek.
•Removed over 100 feet of rip-rap.
Van Zandt Reach
Constructed 14 structures to promote pool development and add wood cover.
Kalsbeek Reach• Constructed 11 Structures to promote pool
development and increase wood cover while improving side channel connectivity
• Placed 14 3-log structures in side channel to improve instream habitat
Funding Provided By:
Salmon Recovery Funding Board
Pacific Salmon Commission
U.S. Fish and Wildlife Service
Environmental Protection Agency
Lessons Learned
Lessons LearnedDesigns need to be constructible and within budget and equipment capabilities.
Lessons LearnedDesigns need to be constructible and within budget and equipment capabilities.
Important to have on site support from engineers to field fit designs.
Lessons Learned
Important to have on site support from engineers to field fit designs.
Designs need to be constructible and within budget and equipment capabilities.
Plan storage areas for salvaged vegetation.
Lessons LearnedDesigns need to be constructible and within budget and equipment capabilities.
Important to have on site support from engineers to field fit designs.
Plan storage areas for salvaged vegetation.
Be prepared with additional materials essential in construction process – slash, cable, logs.
Continuing Challenges
Zero rise constraint (FEMA flood).
Creating designs that satisfy the expectations of funding agencies.
Building structures that promote habitat benefits while not increasing risks to landowners.
Finding landowners willing to provide access and support for salmon habitat restoration projects.
Superstar Operator Harlan Harvey
Acknowledgements
Tim Abbe, Arthur Flemming, and the team from Entrix
Gus Kays, Michael Spillane, and the team from Herrera
Nooksack Tribal Works including Mike Watson, Roy Nicol, Mike Ivie, Leo Redfox, Harlan Harvey, Kraig Harvey, and Vincent Cisneros
Nooksack Natural Resources Department including Jim Bura, Sindick Bura, Tom Cline, Treva Coe, Ned Currence, Llyn Doremus, Tim Hyatt, Gary MacWilliams, Michael Maudlin, Jenni Pelc, Loren Roberts, Russ Roberts, and Roman Swanaset
Special Thanks to Erica Capuana
And many others…