Zmrhal's Coweeman River Project

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat
Project ID05-1549 R
Recovery DomainsWillamette R. - Lower Columbia
Start Date02/01/2006
End Date08/26/2008
Year2005
StatusCompleted
Last Edited04/19/2022
 
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Description    


The Cowlitz Conservation District completed this restoration project on the Coweeman River in Cowlitz County. The project site is upstream of a geologic pinch point that forms a mid channel bar with several side channel areas. The Coweeman River has eroded the existing narrow forested buffer exposing alluvial soils in agriculture landuse and threatens to abandon the side channel habitat. This project improved channel stability and habitat diversity by: 1) establishing 4.5 acres of forested riparian area on 800 feet of streambank, and 2) managing the rate of channel migration to allow the riparian vegetation to get established by implementing a bio-engineering design tha tresulted in a roughened yet deformable stream bank through the use of bank shaping, LWD placement, and use of natural, streambed sized material for toe rock.

This project addressed the needs identified within the Lower Columbia Salmon Recovery Fish & Wildlife Plan and the restoration area for this project is listed as a priority within the Plans Six Year Habitat Work Schedule Addendum. The Coweeman subbasin was identified as one of the most significant areas for salmon recovery among Washington Cascade strata subbasins based on fish population significance and realistic prospects for restoration. This project provides short term and long-term benefits to all life stages of Chinook, coho, and chum salmon and steelhead and cutthroat trout. As stated in the Subbasin Plan, all Coweeman River salmon and steelhead will need to be restored to a high level of viability to meet regional recovery objectives.

Project Benefit    


The goal of the project is to restore native riparian vegetation along salmon bearing streams. The objective of the project is to restore natural streamside vegetation, improve stream temperature, reduce erosion, filtration, and recruit large woody debris.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated .08
Riparian Habitat
  Stream Miles Treated .25 .25
  Acres Treated 4.5 4.5

Funding Details

SourceFunds
PCSRF$79,600
Other$17,689
Report Total:$97,289


Project Map



Worksites

1-Zmrhal's Coweeman River Pro    


  • Worksite Identifier: 1-Zmrhal's Coweeman River Pro
  • Start Date:
  • End Date:
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Lower Columbia
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Washington
  • Recovery Domain: Willamette R. - Lower Columbia
  • Latitude: 46.14801153
  • Longitude: -122.7804509

ESU

  • Lower Columbia River Coho Salmon ESU
  • Columbia River Chum Salmon ESU
  • Lower Columbia River Steelhead DPS
  • Lower Columbia River Chinook Salmon ESU

Map

Photos

Metrics

Metrics
  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 97,288.73
    •      . . C.0.b Length of stream treated/protected .25
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
      Lower Columbia Salmon Recovery Fish & Wildlife Plan
    •      . . 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 76,291.69
      •      . . . . C.4.b Total length of instream habitat treated .08
      •      . . . . 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 .08
        •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 4
        •      . . . . . . C.4.d.7 Number of structures placed in channel 6
      •      . . C.5 Riparian Habitat ProjectY (Y/N)
        •      . . . . C.5.a Riparian Habitat Funding 20,997.04
        •      . . . . C.5.b.1 Total riparian miles streambank treated .25
        •      . . . . C.5.b.2 Total Riparian Acres Treated 4.5
        •      . . . . C.5.c.1 Riparian plantingY (Y/N)
          •      . . . . . . C.5.c.2
            Species of plants planted in riparian
            Thuja plicata (cedar), Salix sp. (willow), Alnus rubra (alder), native shrubs
          •      . . . . . . C.5.c.3 Acres planted in riparian 4.5