Wimpey Creek (Skinner) Restoration

Salmonid Habitat Restoration and Acquisition

Fish Passage Improvement Instream Habitat Riparian Habitat Upland Habitat And Sediment
Project ID003 16 SA
Recovery DomainsInterior Columbia
Start Date07/02/2017
End Date09/13/2018
Year2016
StatusCompleted
Last Edited10/17/2019
 
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Description    


The Wimpey Creek (Skinner) Restoration Project improved stream function and aquatic resources in the lower reach of Wimpey Creek. The project area is now a more natural landscape that maximizes ecological site potential through restoration of native plant communities, provision of preferred habitat for listed fish species, and establishment of a sustainable stream and floodplain morphology.

Channel restoration resulted in 4,830 linear feet (6.1 acres) of improved aquatic habitat. Fish passage improvements opened 1.48 miles in Wimpey Creek for all life stages of ESA-listed and resident fish species. Two irrigation diversions acting as partial barriers were improved via one constructed riffle and one boulder-cascade weir.

Channel shaping and realignment was completed within a 1.4 mile reach, and included 0.07 mile (0.1 acre) of off-channel stream construction and excavation of 17 pools. Channel rehabilitation actions were accomplished through reconnection of 1.8 acres of floodplain. Placement of 72 instream structures such as large wood, woody debris matrices, habitat structures, step pools, and riffles are providing bank stabilization, creating roughness, and increased habitat diversity. Seven pools will be created by scour.

Riparian treatment consisted of native plant seeding, and installation of sod mats, potted plants, and willow stakes on approximately 6.1 acres within the 1.4 mile reach of Wimpey Creek. The buffer for most riparian planting was within 23 feet of Wimpey Creek. A cattle and wildlife exclusion fence was installed to protect 0.26 linear mile of Wimpey Creek on both sides. Additionally, five troughs and pipeline were installed to provide a source of water to livestock as they will no longer be able to access the creek.

The project was completed on schedule; the original scheduled end date was incorrectly entered into the database.

Project Benefit    


The existing limiting factors identified for Lemhi River steelhead and salmon are water quantity, water temperature, increased sediment, instream habitat complexity, riparian condition, floodplain connectivity, and passage barriers. The project actions to be implemented through this project will address these factors.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated 1.40 1.40
Riparian Habitat
  Stream Miles Treated 1.40 1.40
  Acres Treated 6.1 6.1
Upland Habitat
  Acres Treated .1 .0
Fish Passage
  Barriers Removed 2 2
  Miles Opened 1.48 1.48

Funding Details

SourceFunds
PCSRF$246,330
Other$141,171
In-Kind Other$500
Report Total:$388,001


Project Map



Worksites

Wimpey Creek    


  • Worksite Identifier: Wimpey Creek
  • Start Date: 06/02/2017
  • End Date: 06/02/2020
Area Description
Lemhi River tributary

Location Information

  • Basin: Salmon
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Interior Columbia
  • Latitude: 45.101848
  • Longitude: -113.711227

ESU

  • Snake River Basin Steelhead DPS
  • Snake River Spring/Summer-run Chinook Salmon ESU

Map

Photos

Metrics

Metrics
  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 388,001.00
    •      . . C.0.b Length of stream treated/protected 1.40
    •      . . 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.2 Fish Passage ImprovementY (Y/N)
      •      . . . . C.2.a Fish Passage Funding 6,500.00
      •      . . . . C.2.b.1 Length of stream made accessible 1.48
      •      . . . . C.2.b.3 Type of blockage/barrier (LOV)
      •      . . . . C.2.b.4 Number of blockages/impediments/barriers impeding passage 2
      •      . . . . C.2.c.1 Fish passage blockages removed or altered (other than road crossings reported in C.2.f to C.2.i)Y (Y/N)
        •      . . . . . . C.2.c.2 Number of blockages/impediments/barriers removed/altered 2
      •      . . C.4 Instream Habitat ProjectY (Y/N)
        •      . . . . C.4.a Instream Habitat Funding 274,276.00
        •      . . . . C.4.b Total length of instream habitat treated 1.40
        •      . . . . 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 1.40
          •      . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity .07
          •      . . . . . . 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 17
        •      . . . . 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 1.40
          •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 7
          •      . . . . . . C.4.d.7 Number of structures placed in channel 72
        •      . . C.5 Riparian Habitat ProjectY (Y/N)
          •      . . . . C.5.a Riparian Habitat Funding 28,639.00
          •      . . . . C.5.b.1 Total riparian miles streambank treated 1.40
          •      . . . . C.5.b.2 Total Riparian Acres Treated 6.1
          •      . . . . C.5.c.1 Riparian plantingY (Y/N)
            •      . . . . . . C.5.c.2
              Species of plants planted in riparian
              Populus balsamifera spp. Trichocarpa, P. tremuloides, Cornus sericea, Amelanchier alnifolia, Alnus viridis, Betula occidentalis, Prunus virginiana, Rosa woodsii, Salix spp. Achillea millefolium, Calamagrostis canadensis, Deschampsia cespitosa, Elymus lanceolatus, E. trachycaulus, Geum macrophyllum, Artemisia tridentata, Achnatherum hymenoides, Festuca idahoensis, Gaillardia aristata, Pascopyrum smithii.
            •      . . . . . . C.5.c.3 Acres planted in riparian 6.1
          •      . . . . C.5.d.1 FencingY (Y/N)
            •      . . . . . . C.5.d.2 Miles of fence along stream .26
          •      . . C.6 Upland Habitat And Sediment ProjectY (Y/N)
            •      . . . . C.6.a Upland Habitat / Sediment Funding 78,586.00
            •      . . . . C.6.b.1 Acres of upland habitat area treated .1
            •      . . . . C.6.j.1 Upland livestock management Y (Y/N)
              •      . . . . . . C.6.j.2 Upland livestock management action(s) taken (LOV)
              •      . . . . . . C.6.j.4 Number of livestock water installations/developments 5