Sweetwater Creek Reach 3 Floodplain Restoration

Salmonid Habitat Restoration and Acquisition

Instream Habitat Riparian Habitat
Project ID011 14 CW
Recovery DomainsInterior Columbia
Start Date10/15/2019
End Date11/29/2019
Year2014
StatusCompleted
Last Edited10/21/2021
 
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Description    


The majority of the objectives were met during implementation of this restoration project. All of the off channel habitat areas were constructed according to design and the entire lower section of new channel was constructed with all large wood habitat structures as well as all pool/riffle and pool/run/riffle sequences. All of the habitat structures were built and implemented in the existing channel according to design as well. All of the debris and garbage material was collected and hauled off site. All of the targeted undesirable vegetation was removed and the entire disturbed area was seeded with a native riparian grass and forb mix.

There were some variations between the proposed project and the final project implemented. The most upstream section of new channel construction did not occur due to a change in field conditions from the time the design work was done and project implementation. According to design approximately 350 feet of new channel construction was to take place in the most upstream extent of the project area utilizing a historic side channel as the new primary creek channel. After data was collected for the design, this portion of Sweetwater Creek experienced significant incision, making it impossible to divert and re-enter the creek at this location. It simply wasn’t possible to construct a channel diversion structure of the size necessary to create that much head and stay within project budget. That is the reason the project created 0.30 miles of new stream channel versus the planned 0.36 miles of new channel. This is also the reason that the 13 large wood structures proposed was reduced to 11; the other two were to be placed in that uppermost extent of the project area that was not feasible to construct.

Project Benefit    


This project will benefit Snake River steelhead. The project will increase juvenile rearing habitat and improve riparian function due to streambank stability, large woody debris recruitment and floodplain connectivity.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated .49 .49
Riparian Habitat
  Stream Miles Treated .98 .98
  Acres Treated 13.0 6.2

Funding Details

SourceFunds
PCSRF$238,486
Other$106,150
Report Total:$344,636


Project Map



Worksites

Sweetwater 03    


  • Worksite Identifier: Sweetwater 03
  • Start Date: 03/01/2019
  • End Date: 12/31/2019
Area Description
Sweetwater Creek

Location Information

  • Basin: Clearwater
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Interior Columbia
  • Latitude: 46.359705
  • Longitude: -116.81093

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 344,636.00
    •      . . C.0.b Length of stream treated/protected .49
    •      . . 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 300,000.00
      •      . . . . C.4.b Total length of instream habitat treated .49
      •      . . . . 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 .30
        •      . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity .09
        •      . . . . . . C.4.c.5 Acres of off-channel or floodplain connected through channel reconfiguration and connectivity 13.0
        •      . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 11
      •      . . . . 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 .13
        •      . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 2
        •      . . . . . . C.4.d.6 Yards of average stream-width at mid-point of channel structure placement project9 (Yards)
        •      . . . . . . C.4.d.7 Number of structures placed in channel 11
      •      . . C.5 Riparian Habitat ProjectY (Y/N)
        •      . . . . C.5.a Riparian Habitat Funding 44,636.00
        •      . . . . C.5.b.1 Total riparian miles streambank treated .98
        •      . . . . C.5.b.2 Total Riparian Acres Treated 13.0
        •      . . . . C.5.c.1 Riparian plantingY (Y/N)
          •      . . . . . . C.5.c.2
            Species of plants planted in riparian
            Native grass and forb seed mix. Riparian plant species will be planted in the fall of 2020.
          •      . . . . . . C.5.c.3 Acres planted in riparian 6.2
          •      . . . . . . C.5.c.4 Miles of streambank treated with riparian planting .98
        •      . . . . C.5.h.1 Riparian plant removal/controlY (Y/N)
          •      . . . . . . C.5.h.2
            Species of plants treated/removed in riparian
            Phalaris arundinacea, Tanacetum vulgare, Ailanthus altissima, Cynoglossum officinale, Dipsacus fullonum, Rubus armeniacus, Conium maculatum
          •      . . . . . . C.5.h.3 Acres of riparian treated for plant removal/control 6.2
          •      . . . . . . C.5.h.4 Miles of streambank treated for riparian plant removal/control .98
        •      . . . . C.5.j.1 Debris/structures removalY (Y/N)
          •      . . . . . . C.5.j.2 Acres of riparian treated for debris/structures removal .1