Channel Stabilization and Retrofit

by Ken Nilsen, King County Public Works, Seattle, United States,

Document Type: Proceeding Paper

Part of: Water Policy and Management: Solving the Problems


In 1990 King County Surface Water Management Division completed the Soos Creek Basin Plan. This basin was one of the most rapidly developing areas in the State of Washington. The goal of this basin plan was to develop capital improvement projects and land use controls that would eliminate and/or reduce flooding, erosion and the degradation of water quality and valuable natural resources in the area. This retrofit project was recommended in the Plan to correct severe erosion and sedimentation problems due to inadequate urban drainage stormwater outfalls and conveyance systems that were impacting salmon spawning grounds, a nearby salmon hatchery, and raising potential public safety concerns. During the projects conceptual alternative analysis and review phase, the opportunity was also identified to retrofit existing urban drainage facilities with best management practices to improve stormwater quality.

Subject Headings: Channel stabilization | Rehabilitation | Erosion | Quality control | Public health and safety | Water quality | Water resources | Municipal water | Washington | United States

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