Your input is helping us prepare for construction
 Project map and rendering
King County is getting ready to build a wet weather storage facility near the intersection of Southwest Michigan Street and Second Avenue Southwest to hold stormwater and wastewater during large storms, reducing overflows into the Duwamish River. The County will also build supporting infrastructure underneath West Marginal Way Southwest. The design phase of the project was just completed.
Earlier this year, King County Wastewater Treatment Division hosted a post-design survey to gather feedback and input from communities neighboring the West Duwamish Wet Weather Storage project. The survey asked about community engagement during design. The outreach team heard from residents, community-based organizations (CBOs), businesses, and neighborhood councils in the Highland Park, Georgetown, and South Park neighborhoods. Our goal was to gather feedback that will help us more effectively communicate during construction.
What we heard
Most people who took the survey said they prefer to receive project information by mail, and many people prefer email. Many people shared that they felt informed at each stage of the project and said information was easy to understand. During construction, we’ll continue to share information by direct mail and email, as well as working with neighborhood groups and tabling at community events to share information.
Most people also said they thought their input was considered by the project team. However, many people said they had not provided input during project design, either because they did not know about opportunities to share input or were not interested in sharing comments.
We also heard concerns about safe travel for cyclists and pedestrians during construction, including highlighting unsafe road conditions along potential detour routes. We received suggestions for signage to navigate detours and safer routes wherever cyclists and pedestrians might be affected.
The feedback you shared will help improve our communications and reduce impacts during construction. Thank you for staying engaged and helping to shape this clean water project!
What's next
Preparing for construction!
We expect construction to start by early 2026 and continue through summer 2028. In the meantime, visit the project website to sign up for our email list and stay up to date with the project, including upcoming engagement opportunities this summer.
Community engagement during construction
King County will share regular updates during construction to avoid surprises. We will monitor a construction hotline, deliver notices to near neighbors, attend community fairs and festivals, mail informational materials, send email updates, post on social media, and update our project website.
 Project timeline
Questions?
Interpretation and translation services are available to you at no cost. If you need them, please contact Daniel Arauz at 206-437-6486 or daarauz@kingcounty.gov.
Alternative Formats Available: 206-477-5371 or TTY Relay: 711
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