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Natural Drainage Systems (NDS) Designs

Final Design

This project consists of designing and constructing a natural drainage system at four locations in Northeast Seattle. The project goals are to improve Thornton Creek water quality and decrease the chance of flooding downstream. 

The South Thornton Natural Drainage System (NDS) Project has completed final design, and we are now presenting updated street and drainage improvements to the community.

We’re partnering with the Seattle Department of Transportation (SDOT) to incorporate sidewalks into the streets that do not currently have formalized sidewalks, which aligns with community requests to install sidewalks as a part of this project.

Explore Each Site Design

Click 'Learn more' on a site below to see its final design.

23rd Ave NE

41st Pl NE

117th St/
120th St


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