Barton CSO control

King County constructed 91 roadside rain gardens, a type of green stormwater infrastructure, on 15 blocks in the Sunrise Heights and Westwood neighborhoods in West Seattle.

Completed – Fall 2015

King County is responsible for regular maintenance of the roadside rain gardens year round. You can expect to see crews onsite at least monthly performing regular maintenance. Expect more frequent visits before and after large storms, and during the summer growing season.

Project description

King County constructed 91 roadside rain gardens, a type of green stormwater infrastructure, on 15 blocks in the Sunrise Heights and Westwood neighborhoods in West Seattle. Located in the planter strip between the curb and sidewalk, these roadside rain gardens divert stormwater runoff away from the combined sewer system. When it rains, stormwater filters through the rain garden soil to a drain pipe, which takes the water to a deep well for slow infiltration underground. Keeping stormwater out of the sewer system will reduce CSOs of raw sewage and untreated stormwater into Puget Sound near the recently upgraded Barton pump station and Fauntleroy ferry dock.