North Fork Stillaguamish River ELJ's FY 2016, 2017, 2018, 2019, 2020

Salmonid Habitat Restoration and Acquisition

Instream Habitat
Project ID2016-STIL-224-163
Recovery DomainsPuget Sound
Start Date09/30/2017
End Date09/30/2022
Last Edited04/06/2022
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The Stillaguamish Tribe proposes to construct at least 3 Engineered Log Jams (ELJs) in the N Fork and at least 4 ELJs in the S Fork Stillaguamish River to benefit Chinook, coho, steelhead, bull trout, and some trout species. Consistent with earlier phases, this in-stream restoration will create channel complexity, increase pool habitat for juvenile salmonids and adult holding, sort sediment, and provide a substrate for primary and secondary productivity. Since the 1900s most of the natural wood in the system was cleared and riparian zones logged leaving a mix of immature deciduous and conifer species. Building large man-made log structures is a temporary measure to mimic natural system processes until riparian zones mature and provide large stable wood. In both this system, and the Elwha, creating these structures has provided extensive opportunities for recreational fishers as the fish move to these jams for cover and cold water refuge.

Preliminary & final designs will be provided before construction (per Manual 18 Appendix D2 and D3) and as-built plans (Appendix D4) at project completion. Since 1998, the Tribe has installed 23 ELJs on the North Fork Stillaguamish.Near term goals are to create 50 or more jams in the N and S Forks. NWIFC PCSRF funding will be used as match to construct at least one log jam on the NF and a water diversion at one of the worksites. The PRISM metrics have been prorated so as not to over-report outcomes to NOAA.
Note: The above description mirrors the RCO description for project 16-1553. However it should be noted that the RCO North Fork worksite ELJ reporting accounts for 3 structures, in concert with the first sentence of the RCO description it mentions “at least” 3 will be constructed. At this stage the Tribe is optimistic that 4 structures will be constructed and therefore an additional “proposed” structure is reported in association with the NWIFC project. All other habitat treatment metrics have been circulated and reviewed between the Stillaguamish Tribe, RCO and NWIFC to ensure there is no duplication in reporting. The Tribe is planning to use future NWIFC PCSR awards, contingent on availability, to provide additional funding support for the aggregate project. RCOs companion project 16-1553 has two worksites, one in South Fork, however NWIFC will only report a prorated portion of the NF metrics in agreement with RCO.

10/12/17 note: This project record has been edited to add incremental funds from FY17 in the amount of $76, 121, added to the original $50,000 from FY16.
11/08/18 note: This project record has been edited to add incremental funds from FY18 in the amount of $50,000, added to the previous $126,121 from FY16 and FY17.
1/16/2020 note: This project record has been edited to add incremental funds from FY19 in the amount of $55,000
4/16/2021 note: This project record has been edited to add incremental funds from FY20 in the amount of $51,866

Project Benefit    

The Stillaguamish Watershed Chinook Salmon Recovery Plan identifies habitat factors limiting Chinook production as: estuary, sediment, hydrology, LWD, riparian and floodplain. This project proposal deals primarily with placement of large woody debris.

The addition of $126,121 will initiate the funding match to install log jams in the North Fork Stillaguamish near the mouth of Deer Creek and Boulder River. The goal outlined in the Stillaguamish Chinook Recovery Plan is to place 51 ELJ’s in the North and South Forks over the first 10 years of implementation. This installation will bring the total to 35 jams in the North Fork. A reach level assessment of the North Fork from Arlington to Darrington has been completed. Using a combination of Lidar, 2009 aerial photography and FLEER analysis, sites were chosen that produce the habitat benefits necessary to move Chinook salmon recovery forward. Prioritized locations have been finalized within the reach from river mile 18 to river mile 30. Jams will be constructed trying to incorporate multiple factors leading to restoring watershed process (e.g. pool habitat, temperature reduction, complexity, reduction of bank erosion).

This NWIFC PCSRF funding will match the SRFB funding for the summer 2017-18 construction seasons.


Metric Completed Originally
Instream Habitat
  Stream Miles Treated .15

Funding Details

Report Total:$282,987

Project Map


North Fork Stillaguamish River    

  • Worksite Identifier: North Fork Stillaguamish River
  • Start Date: 06/01/2017
  • End Date: 12/31/2020
Area Description
North Fork Stillaguamish River between the mouth of Deer Creek and the mouth of Boulder River

Location Information

  • Basin: Puget Sound
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Washington
  • Recovery Domain: Puget Sound
  • Latitude: 48.284019
  • Longitude: -121.746698


  • Puget Sound Chinook Salmon ESU




  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding .00
    •      . . C.0.b Length of stream treated/protected
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
    •      . . C.0.d.1 Project Monitoring (LOV)
    •      . . C.0.d.2 Monitoring Location (LOV)
    •      . . C.4 Instream Habitat ProjectY (Y/N)
      •      . . . . C.4.a Instream Habitat Funding
      •      . . . . C.4.b Total length of instream habitat treated
      •      . . . . C.4.d.1 Channel structure placementY (Y/N)
        •      . . . . . . C.4.d.2 Material used for channel structure (LOV)
        •      . . . . . . C.4.d.3 Miles of stream treated through channel structure placement
        •      . . . . . . C.4.d.4 Acres of streambed treated through channel structure placement
        •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement
        •      . . . . . . C.4.d.6 Yards of average stream-width at mid-point of channel structure placement project (Yards)
        •      . . . . . . C.4.d.7 Number of structures placed in channel