S. Touchet RM 8.5 Channel Realignment

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat
Project ID13-1363 R
Recovery DomainsInterior Columbia
Start Date12/04/2013
End Date12/04/2016
Year2013
StatusCompleted
Last Edited04/19/2022
 
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Description    


The Confederated Tribes of the Umatilla Indian Reservation completed a restoration project to increase floodplain connectivity and channel diversity within a 2,500 foot reach of the S Fork Touchet River (River Mile 8.5) in Columbia County, WA. The project lies within or adjacent to the Rainwater Wildlife Area in a priority area for steelhead and bull trout outlined in the Salmon Recovery Plan. The existing channel was best described as a straightened plane bed channel confined by manmade structures and activities. The project relieved the channel of the current constraints by removing 300 feet of a 600 foot cobble berm to improve lateral migration. The project also activated 1400 feet of high flow side channel. In addition, an undersized 40 foot long bridge that confined the channel was replaced with a 90 foot long bridge with a 70 foot span that allowed for an additional 5000 square feet of floodplain to be connected to the channel. Eight smaller wood structures (consisting of 42 logs) and two large crib jams (consisting of 30 logs) were added to provide habitat cover, accumulate sediment, and force pool formation as well as redirect the existing channel into historic well defined relict channels. Three habitat boulder arrays consisting of 6 3000lbs boulders each were also added to the channel to provide roughness and rearing habitat for juvenile salmonids during higher flows. Crews also installed two small arrays of cottonwood boles on a bare gravel bar to accelerate deposition and vegetative re-colonization. In 2016, we returned to the project area and added another 6 whole logs to the channel as were 5 3000lbs boulders to anchor the whole logs (this addition we count as 1 structure). There were then 14 total structures added to the channel as part of this project. Riparian trees and shrubs were planted all along the 2,500 reach area after construction. Outcomes increased channel complexity, increased floodplain function, and improved juvenile steelhead rearing habitat.

Project Benefit    


To increase floodplain connectivity and channel diversity within a 2,500 foot reach of the S Fork Touchet River (River Mile 8.5) in Columbia County, WA

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated .47 .47
Riparian Habitat
  Stream Miles Treated .47 .47
  Acres Treated 6.0 6.0

Funding Details

SourceFunds
PCSRF$241,436
Other$50,369
Report Total:$291,805


Project Map



Worksites

1-S. Touchet Rainwater Wildli    


  • Worksite Identifier: 1-S. Touchet Rainwater Wildli
  • Start Date:
  • End Date:
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Middle Columbia
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Washington
  • Recovery Domain: Interior Columbia
  • Latitude: 46.20826195
  • Longitude: -117.95420396

ESU

  • Middle Columbia River Steelhead DPS

Map

Photos

Metrics

Metrics
  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 291,804.97
    •      . . C.0.b Length of stream treated/protected .47
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
      Snake River Salmon Recovery Board, 2011 Snake River Salmon Recovery Plan for SE Washington. Snake River Salmon Recovery Board, 410B East Main St, Dayton WA, 99328.
    •      . . 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 249,696.49
      •      . . . . C.4.b Total length of instream habitat treated .47
      •      . . . . 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 .47
        •      . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity .26
        •      . . . . . . C.4.c.5 Acres of off-channel or floodplain connected through channel reconfiguration and connectivity .1
        •      . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 3
      •      . . . . 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 .47
        •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 5
        •      . . . . . . C.4.d.7 Number of structures placed in channel 14
      •      . . C.5 Riparian Habitat ProjectY (Y/N)
        •      . . . . C.5.a Riparian Habitat Funding 42,108.48
        •      . . . . C.5.b.1 Total riparian miles streambank treated .47
        •      . . . . C.5.b.2 Total Riparian Acres Treated 6.0
        •      . . . . C.5.c.1 Riparian plantingY (Y/N)
          •      . . . . . . C.5.c.2
            Species of plants planted in riparian
            Populus Tremuloides,Pseudotsuga menziesii,Abies grandis, Alnus incana, Anus sinuata, Betula occidentalis, Cornus sericea, Crataegus douglasi, Frangula purshiana, Holodiscus discolor, Philadelphus lewisii, Physocarpus malvaceus, Pinus ponderosa, Prunus emarginata, Prunus virginiana, Ribes aureum, Ribes cereum, Rosa nutkana, Rosa woodsii, Salix spp, Sambucus nigra cerulea, Spirea douglasi
          •      . . . . . . C.5.c.3 Acres planted in riparian 6.0
          •      . . . . . . C.5.c.4 Miles of streambank treated with riparian planting .47