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Curbside Rain Gardens & Bioretention

The Public Space Management Program is working with Seattle Public Utilities to advance the City of Seattles goal of managing 700 million gallons of runoff by 2025 with green stormwater infrastructure. The program aims to make it easier for homeowners and neighborhood groups to install rain gardens and bioretention systems in the public right of way.

These landscape features are shallow, planted depressions that capture runoff from the street and sidewalk. They enhance urban habitat, beautify the streetscape, and can be designed to slow neighborhood traffic and create safer places for people to walk. They may be located on non-arterial streets, in the planting strip between an existing sidewalk and curb.

Detailed guidance can be found in the following Client Assistance Memos (CAMs):

  • Voluntary Curbside Rain Gardens (sidewalk runoff only) CAM 2308
  • Voluntary Curbside Bioretention (street and sidewalk runoff) CAM 2309
Property owners may be eligible for a RainWise rebate in some areas of Seattle. The rebate covers up to 100% of the costs associated with installing a rain garden or cistern on private property to capture water from the roof of a home or building. To learn more, visit www.rainwise.seattle.gov.

You can learn more about rain gardens and other green stormwater infrastructure initiatives at the Seattle Public Utilities Green Stormwater Infrastructure page.


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