Santa Cruz, CA
831.421.9291
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  Portland, OR
503.227.5979
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Salmon and Cox Creek Fish Barrier Improvement Project

downstream end of culvert 271Client: Scappoose Bay Watershed Council

Waterways was retained by the Scappoose Bay Watershed Council to develop bid-ready engineering drawings for six culverts on Salmon and Cox Creeks in the Scappoose Bay Watershed that were identified as high priority fish passage barriers during an assessment conducted in 2001.  The design approach consisted of replacing each culvert with a bottomless arch culvert using streambed simulation criteria established by NOAA Fisheries and Oregon Department of Fish and Wildlife. 


In addition to preparing bid-ready engineering drawings, Waterways staff prepared permit applications for each site for the U.S. Army Corps of Engineers, Division of State Lands, ODFW, and Columbia County.  To date, three of the culverts have been replaced.  Construction on two sites occurred in Summer 2010 and the third was constructed in Summer 2011.  In addition to the design services, Waterways assisted SBWC with the bid package, contractor selection and provided construction supervision services during project implementation. 

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