Project documents

Project updates are posted on the project landing page.

Fact sheets

• Post-Design Survey Newsletter, January 2025
• Frequently asked questions, August 2023
• Spring Newsletter, March 2023
• Design is progressing on the West Duwamish Wet Weather Storage Facility, July 2022
• WTD’s Commitment to Green Stormwater Infrastructure Solutions, Fall 2021
• King County is committed to a healthy Duwamish River, November 2021
• Making progress toward reducing CSOs in South Park, Winter 2017
• Highland Park Project Update, October 2017
• West Duwamish CSO Control Project Newsletter, July 2016
• South Park and Highland Park Green Stormwater Infrastructure Newsletter, February 2014
• King County Source Control Project in our Duwamish, July 2013
  
   

Environmental documents

• West Duwamish CSO Control Project Environmental Review; Opportunity for community input in January, Fall 2021

Workforce development resources

• Build the future while building your career
• Contractor flyer for West Duwamish Wet Weather Storage
• King County Wastewater Treatment Division Career Cards