Pratt Creek Channel Rehabilitation

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat Upland Habitat And Sediment
Project ID015 17 SA
Recovery DomainsInterior Columbia
Start Date03/19/2018
End Date10/31/2021
Year2017
StatusCompleted
Last Edited12/14/2021
 
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Description    


The Pratt Creek channel was relocated into 1,774 (0.34 mi) of new channel in fall 2018 from where it had been pushed to the side of the canyon and into a ditch. Approximately 561’ (0.11 mi) of existing channel at the mouth was improved. This 0.45-mile section of Pratt Creek now has complex fish habitat, complete with meanders, riparian vegetation, livestock fencing, toe log structures, pools and riffles. Approximately 1 acre of new floodplain was constructed. Newly constructed floodplain, streambanks, and disturbed upland equaling 3.4 acres (0.38 linear mile on each side of the creek) were seeded with native mesic and xeric species. The streambanks (0.38 miles of stream) were planted with potted native plants. Livestock fencing was installed on each side of the newly realigned channel (0.69 miles of fence) to protect and improve success of revegetation efforts along 0.45 miles of stream. One ford was installed to allow livestock crossing and three water troughs were installed. A new domestic well was installed for the landowner in fall 2021 to address issues of water loss associated with this project in their existing well. Noxious weeds were treated throughout the project site.



Two amendments to the contract allowed for higher-than-anticipated bids for planting, irrigation and stockwater installation, and to install the domestic well, explained above. Modifications to the proposed included 14 more pools and 7 additional instream structures. The riparian acres treated were 1.0 compared to 3.4 acres proposed. This was likely an error in the proposal as there were 3.4 acres of upland treated.

Project Benefit    


The project benefited the Lemhi River Snake River Steelhead population within the Salmon River Major Population Group (MPG) and the Lemhi River Snake River Spring/Summer Chinook Salmon population within the Upper Salmon River MPG.



The project accomplished these specific restoration goals:

- Created a new morphologically appropriate channel segment through existing low ground.

- Improved water quality through vegetation of newly created streambanks to reduce fine grained sediment input and prevent increases in water temperature.

- Improved thermal refuge by increasing the frequency and magnitude of self-maintaining pools.



Habitat quantity was increased by improving fish passage conditions to upstream habitat and increasing channel complexity. Creation of a new channel promoted increased channel diversity, allowing for the natural development and maintenance of scour pools and refugia. Development of an appropriate width-to-depth ratio reduced open water surface area at low flow, reducing localized thermal loading, and increased floodplain connectivity for natural recruitment and growth of native seed sources. Bank treatments and altered land use practices increased bank stability and reduced localized fine-grained sediment inputs.



Development of a robust riparian corridor will, over time, increase shade, reduce thermal loading, increase bank stability and aid in sediment retention.



This project will address five of the nine limiting factors identified by FCRPS including water temperature, increased sediment, bed and channel form, floodplain condition, and riparian condition.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated .45 .40
Riparian Habitat
  Stream Miles Treated .90 .80
  Acres Treated 3.4 3.4
Upland Habitat
  Acres Treated 3.4 .1

Funding Details

SourceFunds
PCSRF$186,741
Other$167,812
In-Kind Other$4,200
Report Total:$358,753


Project Map



Worksites

Pratt Creek    


  • Worksite Identifier: Pratt Creek
  • Start Date: 09/01/2018
  • End Date: 11/30/2018
Area Description
Salmon Subbasin, Lemhi 4th field HUC 17060204, Pratt Creek watershed

Location Information

  • Basin: Salmon
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Interior Columbia
  • Latitude: 45.076006
  • Longitude: -113.698583

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 358,753.00
    •      . . C.0.b Length of stream treated/protected .45
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
      NMFS. 2017. ESA Recovery Plan for Snake River Idaho Spring/Summer Chinook Salmon (Oncorhynchus tshawytscha) and Steelhead (Oncorhynchus mykiss) Populations. Salmon Subbasin Management Plan (Northwest Power and Conservation Council. 2004. “Salmon Subbasin Management Plan”, in Columbia River Basin Fish and Wildlife Program. Portland, Oregon.)
    •      . . 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 271,210.00
      •      . . . . C.4.b Total length of instream habitat treated .45
      •      . . . . 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 .34
        •      . . . . . . 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 1.0
        •      . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 36
      •      . . . . 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 .45
        •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 0
        •      . . . . . . C.4.d.7 Number of structures placed in channel 72
      •      . . C.5 Riparian Habitat ProjectY (Y/N)
        •      . . . . C.5.a Riparian Habitat Funding 69,367.00
        •      . . . . C.5.b.1 Total riparian miles streambank treated .90
        •      . . . . C.5.b.2 Total Riparian Acres Treated 3.4
        •      . . . . C.5.c.1 Riparian plantingY (Y/N)
          •      . . . . . . C.5.c.2
            Species of plants planted in riparian
            Potted: Populus balsamifera spp. Trichocarpa, Cornus sericea, Amelanchier alnifolia, Alnus viridis, Rosa woodsii, Ribes spp., Salix spp. Seed: Calamagrostis canadensis, Deschampsia cespitosa, Elymus lanceolatus, E. elymoides, E. glaucous, E. canadensis, Bromus marginatus, Leymus cinereus, Pseudoroegneria spicata, Poa secunda, P. palustris, Phleum alpinum, Glyceria elata, G. grandis, Oryzopsis hymenoides, Koeleria macrantha, Artemisia tridentata, Festuca idahoensis, and Pascopyrum smithii
          •      . . . . . . C.5.c.3 Acres planted in riparian 1.0
        •      . . . . C.5.d.1 FencingY (Y/N)
          •      . . . . . . C.5.d.2 Miles of fence along stream .69
        •      . . . . 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 .90
        •      . . . . C.5.h.1 Riparian plant removal/controlY (Y/N)
          •      . . . . . . C.5.h.2
            Species of plants treated/removed in riparian
            Any plant on the State of Idaho noxious weed list was treated with herbicide.
          •      . . . . . . C.5.h.3 Acres of riparian treated for plant removal/control 1.0
        •      . . C.6 Upland Habitat And Sediment ProjectY (Y/N)
          •      . . . . C.6.a Upland Habitat / Sediment Funding 18,176.00
          •      . . . . C.6.b.1 Acres of upland habitat area treated 3.4
          •      . . . . C.6.h.1 Upland vegetation managementY (Y/N)
            •      . . . . . . C.6.h.2
              Species of plants in upland vegetation management
              Any plant on the State of Idaho noxious weed list will be treated with herbicide.
            •      . . . . . . C.6.h.3 Acres treated for upland vegetation management 37.4
          •      . . . . 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 3