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The Third Avenue entrance to the King County Courthouse is temporarily closed. Please use the Fourth Avenue entrance.  
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King County Stormwater Services Section designs, builds and maintains stormwater facilities, updates design standards for stormwater facilities, evaluates and investigates reports of drainage and water quality problems and implements small project fixes of these problems, and drafts, reviews, and implements stormwater regulations. ensuring compliance with water quality codes.

Stormwater Units and Programs

For the comprehensive collection of stormwater services provided by various King County departments, please visit our Stormwater services and information site.