Stillaguamish ELJ Monitoring

Salmonid Restoration Planning and Assessments

Salmonid Habitat Assessment / Inventory
Project ID01-1193 P
Recovery DomainsPuget Sound
Start Date04/06/2001
End Date09/30/2006
Last Edited04/19/2022
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Wild Fish Conservancy used this funding to conduct a five-year evaluation of the engineered log jams (ELJs) placed in the North Fork Stillaguamish. The monitoring was to confirm ELJ success or failure, document changes that occurred within the structures, and examine the long-term benefits to salmon, hydraulic interactions of the ELJs, and cost-effectiveness of the technology.
Eight ELJs had been previously installed in the North Fork Stillaguamish to increase the quantity and quality of holding pool habitat for spawning summer Chinook in the reach between RM 21.3 and 22.8 (projects 97-1299 and 99-1367). Additional goals were to test ELJ technology and performance, enhance off-channel habitat, increase bank protection, and maintain wood in channel by creating areas of deposition. Project partners included the National Marine Fisheries Service, Snohomish County, US Army Corps of Engineers, Washington Department of Ecology, the Stillaguamish Tribe and the Tulalip Tribe.

This project monitored and assessed the original eight ELJs, completing over eight years of assessment on ELJ technology, and analyzing benefits to salmon with baseline and post-project monitoring. This information can be used to assist and evaluate the success of additional ELJ installations being planned in other regions of the state. In collaboration with other agencies, the project produced standardized ELJ monitoring protocols. The monitoring on the North Fork Stillaguamish ELJs has and will continue to set standards for others to follow.

Project Benefit    

The goal of the project was to increase/improve information to help select projects that have a high certainty and benefit. The objective of the project was to determine project siting, feasibility, design, or implementation.


Metric Completed Originally

Funding Details

Report Total:$570,351

Project Map


1-NF Stilly ELJ Monitoring    

  • Worksite Identifier: 1-NF Stilly ELJ Monitoring
  • Start Date:
  • End Date:
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Puget Sound
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Washington
  • Recovery Domain: Puget Sound
  • Latitude: 48.28127931
  • Longitude: -121.82030827


    No ESU data was found for this worksite.




  • B.0 Salmonid Restoration Planning and AssessmentsY (Y/N)
    •      . . B.0.a Planning And Assessment Funding 570,350.58
    •      . . B.0.b.1 Area Encompassed 48.0
    •      . . B.2 Salmonid Habitat Assessment / InventoryY (Y/N)
      •      . . . . B.2.a Habitat Assessment Funding 570,350.58
      •      . . . . B.2.d Habitat surveysY (Y/N)
        •      . . . . . . B.2.d.1 Type of habitat survey/assessment (LOV)
        •      . . . . . . B.2.d.2 Amount of habitat assessed 48.0
        •      . . . . . . B.2.d.3 Amount of habitat assessed that needed restoration 10.0