Steptoe Creek perched culvert replacement

Salmonid Habitat Restoration and Acquisition

Fish Passage Improvement
Project ID15-1309 R
Recovery DomainsInterior Columbia
Start Date12/09/2015
End Date04/30/2018
Last Edited04/19/2022
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The Palouse Conservation District (PCD) replaced a perched road culvert along Steptoe Creek in southeastern Whitman County, WA. The culvert passed under Steptoe Canyon Road, approximately 0.7 miles upstream of the confluence with the Snake River. A new bridge replaced the culvert, which had been a complete barrier to fish passage. The bridge was designed with SRFB funds (agreement #14-1914P). In conjunction with bridge installation, construction included a stream channel realignment with a riffle-pool channel bed design. Whitman County Public Works (WPW) collaborated with PCD on this project, offering in-kind matching funds in the form of crew labor and equipment use during construction. A cultural resource monitor was on-site during all phases of excavation due to the sensitivity of the site identified during the project design phase. Removing the perched culvert opened up approximately 1.5 miles of Steptoe Creek to summer steelhead use. An additional 2.0 miles of habitat will become available once an upstream barrier culvert is replaced. PCD is currently assisting the landowner to enroll the creek into the Conservation Reserve Enhancement Program (CREP), allowing the landowner to receive cost-share and incentive payments to do enhancements along the stream channel, including livestock improvements and riparian plantings.

Project Benefit    

To provide fish passage to 1.5 miles of habitat within Steptoe Creek to benefit summer steelhead. An additional 2.0 miles of habitat will become available once an upstream barrier culvert is replaced.


Metric Completed Originally
Fish Passage
  Barriers Removed
  Miles Opened 1.50 3.50

Funding Details

In-Kind Donated Labor$24,178
In-Kind Other$27,701
Report Total:$253,715

Project Map


1-Steptoe Rd. Culvert    

  • Worksite Identifier: 1-Steptoe Rd. Culvert
  • Start Date:
  • End Date:
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Lower Snake
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Washington
  • Recovery Domain: Interior Columbia
  • Latitude: 46.45459004
  • Longitude: -117.19371002


  • Snake River Basin Steelhead DPS




  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 253,715.31
    •      . . C.0.b Length of stream treated/protected .01
    •      . . 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 253,715.31
      •      . . . . C.2.b.1 Length of stream made accessible 1.50
      •      . . . . 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 1.50