Santa Cruz, CA
831.421.9291
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  Portland, OR
503.227.5979
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Lower Clatskanie Floodplain Restoration

DSC09338 smallClient: Columbia Soil and Water Conservation District

This project is located along the mainstem of the Clatskanie River, where the river transitions from a riverine to a tidal system. Past land use impacts have led to a degraded riparian corridor dominated by reed canary grass, less frequent side channel connectivity, and a lack of pool scour in floodplain and secondary channels.

Initially, Waterways was hired to evaluate restoration opportunities and constraints, identify restoration alternatives, estimate construction costs, and prepare a preliminary engineering design. The selected alternative focused on grading to enhance side channel connectivity, installation of log jams and placement of large wood in the floodplain. Following a successful OWEB grant application, Waterways completed permit-ready and bid-ready construction documents for the project and oversaw construction. The project was permitted through USFWS Partners programmatic. Funding was provided through OWEB, USFWS Partners Program, and Oregon DEQ.

 

Image Gallery

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