Oregon Coast Coho Restoration Collaborative Projects in Tribes' Ancestral Territory - North Fork Siuslaw River

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat
Project IDN.Fork-Project 1
Recovery DomainsOregon Coast
Start Date07/01/2017
End Date06/01/2022
Last Edited04/28/2022
1 - 1


Purpose: The North Fork of the Siuslaw River Large Wood Placement Project is part of the larger Oregon Coast Coho Restoration Collaborative Projects in the Tribes Ancestral Territory. The goal is to return salmon to their Ancestral Waters by a collaborative effort with local partners to undertake restoration projects on two rivers (North Fork of the Siuslaw and Bell Creek) where Coho fisheries were culturally and historically important to the Tribe. Each of the component projects addresses stream complexity and water quality limiting factors utilizing best practices.

Work Proposed: The North Fork of the Siuslaw River Large Wood Placement Project is the second phase of a three-phase project designed to enhance water quality and complexity in the North Fork of the Siuslaw River by placing “large wood” (approx. 400 pieces in 40 structures) in tributaries (Condon, Uncle, Russell, Billie, Drew, and/or Wilhelm) along approximately 1.3 mile stretch of the river. The project is an extension of the North Fork Siuslaw Landscape Management Environmental Assessment that was adopted in 2013. The overall project parameters call for enhancing approximately 10 miles of stream through the placement of approximately 100 mature trees (28” to 36” DBH) without roots and 300 plantation trees (20” to 26” DBH) with rootwads. The trees will be flown from US Forest Service managed lands via helicopter.

Project Benefit    

The North Fork of the Siuslaw River Large Wood Placement Project Species Benefited: Oregon Coast ESU Coho Salmon (Oncorhynchus kisutch): ESA-listed as a Threatened Species (76 FR 35755). The project occurs in designated Critical Habitat (73 FR 7816) and Essential Fish Habitat designated under the Magnuson-Stevens Act (PFMC 1999). Oregon Coast ESU Steelhead (Onchorhynchus mykiss): NOAA Species of Concern (69 FR 19975). Managed under the Magnuson-Stevens Act; Essential Fish Habitat not identified. Oregon Coast ESU Chinook Salmon (Oncorhynchus tshawytscha): Managed under the Magnuson-Stevens Act with designated Essential Fish Habitat (Ford et al. 2010). Pacific Lamprey (Entosphenus tridentata): U.S. Fish and Wildlife Service Species of Concern (69 FR 77158). This project is responsive to the Conservation Measures identified by the Pacific Lamprey Conservation Initiative (Luzier et al. 2011). The Confederated Tribes of the Coos, Lower Umpqua and Siuslaw are signatories on the Conservation Agreement for Pacific Lamprey.

Installation of large wood helps helps activate in-stream complexity and restore the streams connection with its floodplain and associated off-channel habitats. Increasing the number and volume of large wood structures in a stream increases pool area and depth, slows water velocity, traps and sorts gravel and find sediments, and facilitates floodplain inundation. Large wood also provides habitat and nutrients for aquatic invertebrates, increasing the food supply for fish. (The Siuslaw Coho Partnership, et al. 2019, Strategic Action Plan for Coho Salmon Recovery: The Siuslaw River, www.siuslaw.org/wp-content/uploads/2019/03/Siuslaw-SAP-Coho-Salmon-Recovery.pdf) Due to the fact that large wood installations provide such a wide range of ecosystem services, they benefit multiple species with different life strategy and habitat needs like chinook, coho, and steelhead.

Measurable Outcomes and Benefits

The completion of this project will produce a number of measurable outcomes and benefits including:

-Providing habitat restoration to approximately 10 miles of stream.

-Placing a minimum of 50 “Large Wood” pieces in Condon, Uncle, Russell, Billie, Drew, and/or Wilhelm creeks (the total number of pieces of “large wood” placed in phase II, of which this -project is a sub-element is approximately 400).

-Improved floodplain connectivity


Metric Completed Originally
Instream Habitat
  Stream Miles Treated 8.00 10.00

Funding Details

Report Total:$115,335

Project Map


North Fork-Project 1    

  • Worksite Identifier: North Fork-Project 1
  • Start Date: 07/01/2017
  • End Date: 06/30/2020
Area Description
Lower North Fork Siuslaw 6th HUC: 171002060702

Location Information

  • Basin: Northern Oregon Coastal
  • Subbasin:
  • Watershed:
  • Subwatershed: 171002060702
  • State: Oregon
  • Recovery Domain: Oregon Coast
  • Latitude: 44.065716046
  • Longitude: -124.009432359


  • Oregon Coast Chinook Salmon ESU
  • Oregon Coast Coho Salmon ESU
  • Oregon Coast Steelhead DPS




  • 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 1.30
    •      . . 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 8.00
      •      . . . . 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 8.00
        •      . . . . . . C.4.d.4 Acres of streambed treated through channel structure placement 26.9
        •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 78
        •      . . . . . . C.4.d.6 Yards of average stream-width at mid-point of channel structure placement project10 (Yards)
        •      . . . . . . C.4.d.7 Number of structures placed in channel 39
      •      . . C.5 Riparian Habitat ProjectY (Y/N)
        •      . . . . C.5.a Riparian Habitat Funding
        •      . . . . C.5.b.1 Total riparian miles streambank treated
        •      . . . . C.5.b.2 Total Riparian Acres Treated
        •      . . . . C.5.c.1 Riparian plantingY (Y/N)
          •      . . . . . . C.5.c.3 Acres planted in riparian
          •      . . . . . . C.5.c.4 Miles of streambank treated with riparian planting
        •      . . . . C.5.d.1 FencingY (Y/N)
        •      . . . . C.5.h.1 Riparian plant removal/controlY (Y/N)