Hawley Creek Private Culvert Replacement

Salmonid Habitat Restoration and Acquisition

Fish Passage Improvement
Project ID066 08 SA
Recovery DomainsSnake River
Start Date10/11/2012
End Date06/30/2013
Last Edited05/08/2024
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Actions included the removal of the full fish passage barrier (two side-by-side culverts counted as one fish passage barrier) at the road crossing. The culverts were replaced with a 24 foot by 35 foot prefabricated modular bridge. This resulted in 4.7 miles of upstream access for all life stages of ESA listed salmonids and other resident fish. Approximately, 0.01 miles of stream was treated.

This action is part of a USBWP plan to reconnect Hawley Creek to the Lemhi River. Installation of the bridge increased channel area and restored a natural channel under the bridge. This project falls within the NOAA Assessment Units Lemhi River seasonally and disconnected tributaries (LRS3) for Snake River Steelhead. Habitat quantity and particularly anthropogenic barriers, account for approximately 20% of the conditions which limit the distribution of anadromous fish to diverse habitats within the Lemhi NOAA assessment unit.
Due to cold working conditions and freezing soil conditions the installation of the bridge was delayed. The original start date was schedule to begin in November of 2012. The installation was postponed until April of 2013. The final inspection by the engineer was completed on May 3, 2013.

Due to high water during 2013 the installation was monitored in May of 2013 and it was determined that no damage was done.

This project came in slightly under budget.

Project Benefit    

The velocity of the creek flow will be reduced and will result in the elimination of the current physical barrier, allowing passage for all life stages of ESA-listed salmonids and other resident species. The barrier removal will provide an additional 4.7 miles of access upstream and restore a more natural condition to the Hawley Creek channel at this project location.


Metric Completed Originally
Fish Passage
  Barriers Removed
  Miles Opened 4.70 4.70

Funding Details

Report Total:$114,446

Project Map


Hawley Creek    

  • Worksite Identifier: Hawley Creek
  • Start Date: 10/11/2012
  • End Date: 05/03/2013
Area Description
Salmon Subbasin, Lemhi Basin 4th field HUC & Hawley Creek

Location Information

  • Basin: Salmon (170602)
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Idaho
  • Recovery Domain: Snake River
  • Latitude: 44.677869
  • Longitude: -113.287165


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




  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 114,446.00
    •      . . C.0.b Length of stream treated/protected .01
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
      Salmon Subbasin Management Plan, Ecovista, 2004,NWPPC, Portland, Or
    •      . . 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 114,446.00
      •      . . . . C.2.b.1 Length of stream made accessible 4.70
      •      . . . . C.2.b.3 Type of blockage/barrier (LOV)
      •      . . . . C.2.b.4 Number of blockages/impediments/barriers impeding passage 1
      •      . . . . C.2.g.1 Bridge installed or improved at road stream crossingY (Y/N)
        •      . . . . . . C.2.g.2 Number of bridges installed or improved/upgraded 1
        •      . . . . . . C.2.g.3 Miles of stream made accessible by bridge installation or improvement/upgrade 4.70