Middle Eighteenmile Ellsworth

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat
Project ID017 17 SA
Recovery DomainsInterior Columbia
Start Date03/01/2021
End Date11/30/2021
Year2017
StatusCompleted
Last Edited04/05/2022
 
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Description    


The Lemhi Soil and Water Conservation District (LSWCD) worked with the Ellsworth Angus Ranch to implement the Middle Eighteenmile Ellsworth habitat project for the benefit of Chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) in 0.33 mile of Eighteenmile Creek, a headwater tributary to the Lemhi River. This portion of stream had been moved from the original channel into a straightened homogeneous riffle to accommodate irrigation and hay production.

Habitat actions included construction of new channel with meanders, pools and floodplain, wetland sod bank installation, instream willow rootball and bank treatments (shown under ‘other engineered structures’ in metrics), riparian plantings, livestock exclusion fence, and a hardened water gap.

Note this project was originally funded from grants FY17 ($79,747) and FY20 ($30,263); when sufficient funds became available in the FY17 grant year due to another project being terminated, this project was fully funded from the FY17 grant.

Project Benefit    


Engineered features built instream provide a diverse suite of habitat conditions for juvenile fish summer rearing and overwintering, such as improved riparian and floodplain conditions, stream temperature regulation, and a reduction in sedimentation. Instream fish habitat features include deeper pools with cooler water and more vegetative cover, fewer continuous shallow riffles, and more instream small woody debris. The surrounding floodplain was reactivated to create a hyporheic exchange between surface water and groundwater to lower water temperatures in the summer months and slightly warm water temperatures in winter. The winter groundwater exchange in the riparian zone will help reduce detrimental anchor ice.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated .33 .33
Riparian Habitat
  Stream Miles Treated .33 .33
  Acres Treated 1.2 1.2

Funding Details

SourceFunds
PCSRF$109,421
Other$47,169
Report Total:$156,590


Project Map



Worksites

WS-1    


  • Worksite Identifier: WS-1
  • Start Date: 03/01/2021
  • End Date: 11/30/2021
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Salmon
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Interior Columbia
  • Latitude: 44.6423
  • Longitude: -113.2948

ESU

  • Snake River Spring/Summer-run Chinook Salmon 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 156,590.00
    •      . . C.0.b Length of stream treated/protected .33
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
      NMFS 2017. ESA Recovery Plan for Snake River Spring/Summer Chinook Salmon (Oncorhynchus tshawytscha) & Snake River Basin Steelhead (Oncorhynchus mykiss); Idaho OSC Team (Idaho Governor’s Office of Species Conservation and partners). 2019. Upper Salmon Subbasin Habitat Integrated Rehabilitation Assessment. Assessment prepared for and with the U.S. Department of the Interior, Bureau of Reclamation.
    •      . . 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 106,254.00
      •      . . . . C.4.b Total length of instream habitat treated .33
      •      . . . . 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 .33
        •      . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity .00
        •      . . . . . . C.4.c.5 Acres of off-channel or floodplain connected through channel reconfiguration and connectivity 1.1
        •      . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 120
      •      . . . . 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 .33
        •      . . . . . . 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 0
        •      . . . . . . C.4.d.7 Number of structures placed in channel 120
      •      . . C.5 Riparian Habitat ProjectY (Y/N)
        •      . . . . C.5.a Riparian Habitat Funding 50,336.00
        •      . . . . C.5.b.1 Total riparian miles streambank treated .33
        •      . . . . C.5.b.2 Total Riparian Acres Treated 1.2
        •      . . . . C.5.c.1 Riparian plantingY (Y/N)
          •      . . . . . . C.5.c.2
            Species of plants planted in riparian
            Salix spp & river birch
          •      . . . . . . C.5.c.3 Acres planted in riparian 1.2
          •      . . . . . . C.5.c.4 Miles of streambank treated with riparian planting .33
        •      . . . . C.5.d.1 FencingY (Y/N)
          •      . . . . . . C.5.d.2 Miles of fence along stream .33
          •      . . . . . . C.5.d.3 Acres of riparian area protected by fencing
        •      . . . . C.5.f.1 Water gap developmentY (Y/N)
          •      . . . . . . C.5.f.2 Number of water gap installations 1
          •      . . . . . . C.5.f.3 Miles of streambank protected by water gap development .33