Stowers Construction, East Fork Potlatch Habitat Restoration

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat
Project ID015 18 CW
Recovery DomainsInterior Columbia
Start Date01/01/2019
End Date10/15/2022
Year2018
StatusOngoing
Last Edited12/06/2021
 
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Description    


The Stowers project area is approximately 1.75 miles east of Bovill, Idaho on the East Fork of the Potlatch River, a tributary in the Clearwater River basin. This project will improve spawning, rearing, and overwintering habitat for steelhead trout in the East Fork of the Potlatch River. This project will increase habitat complexity, recruit spawning gravels, add lateral habitat, increase floodplain connectivity, exclude cattle with fencing, and create over summer and winter rearing habitat on private property.



Project actions include:

1. Modify one river mile with systematic and designed careful felling of approximately 110 trees on the landowner’s property for a total of 61 instream structures. Tree locations have been identified based on density of riparian canopy, LiDAR surface topography data, and hydraulic modeling to provide the largest benefit to maximize lateral habitat. Trees will have size specifications and will require minimal anchoring due to their large diameter and length, which will provide natural ballast. This has the added benefit of minimizing earth disturbance from large equipment. Some adjustment and tree movement is to be expected through hydraulic forces, sediment sorting, and natural river dynamic processes. Three larger, channel spanning, anchored structures will use additional anchoring members to assure stability and to provide log jam functionality.



2. Improve access to approximately 4.5 acres of floodplain using log jams to aggrade the river at key points to promote floodplain access.



3. Minimal excavation required in some locations to promote side channels and additional floodplain connectivity.



4. Plant five acres of riparian vegetation throughout the project reach using native plants and install 0.6 miles of fencing to protect 223 acres.



The East Fork Potlatch River is considered a high priority for habitat restoration efforts by several entities including IDFG, U.S. Forest Service, Potlatch Corporation, Idaho Department of Lands, the Latah Soil and Water Conservation District (LSWCD) and private landowners. Match funding will be provided by the Bonneville Power Administration.



This project is located downstream of the PCSRF-funded Dammerman East Fork Potlatch Steelhead Habitat Restoration project (007 17 CW).

Project Benefit    


The East Fork of the Potlatch River is identified as a major spawning area for federally ESA listed wild steelhead.This project will use locally sourced trees to increase instream channel complexity on approximately one mile of the East Fork Potlatch River. The LWD will increase recruitment and retention of vital spawning gravels, provide resting, rearing, and overwintering habitat, reconnect the floodplain, and increase lateral habitat. The trees will be positioned within the channel as debris, log jams, and channel spanners in locations designed to maximize their benefit for backwatering floodplains and create lateral habitat.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated 1.00
Riparian Habitat
  Stream Miles Treated .50
  Acres Treated 5.0

Funding Details

SourceFunds
PCSRF$174,622
Other$95,188
Report Total:$269,810


Project Map



Worksites

Stowers    


  • Worksite Identifier: Stowers
  • Start Date: 01/01/2019
  • End Date: 12/31/2021
Area Description
East Fork Potlatch River

Location Information

  • Basin: Clearwater
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Interior Columbia
  • Latitude: 46.843964
  • Longitude: -116.381836

ESU

  • Snake River Basin Steelhead DPS

Map

Photos

Metrics

Metrics
  • 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.c.1 Channel reconfiguration and connectivityY (Y/N)
        •      . . . . . . C.4.c.2 Type of change to channel configuration and connectivity (LOV)
        •      . . . . . . C.4.c.3 Miles of stream treated for channel reconfiguration and connectivity
        •      . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity
        •      . . . . . . C.4.c.5 Acres of off-channel or floodplain connected through channel reconfiguration and connectivity
        •      . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity
      •      . . . . 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.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
      •      . . 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.2
            Species of plants planted in riparian
          •      . . . . . . 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.d.2 Miles of fence along stream
          •      . . . . . . C.5.d.3 Acres of riparian area protected by fencing