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Project update

October 2019

King County’s project in Magnolia is coming to a close. The County’s contractor has completed restoration of areas affected by construction, and the Wet Weather Facility is in operations and helping to protect Puget Sound. King County Operations will monitor operations of the facility and inspect the pipe again after the rainy season

Project alignmentProject overview map

Magnolia Wet Weather Storage FacilityThe Magnolia Wet Weather Storage Facility at Smith Cove is designed to store excess flows of stormwater and sewage. The facility’s 1.5 million-gallon underground storage tank will help keep sewage and stormwater out of Puget Sound during storms.

King County is Protecting our Waters

This project is part of King County’s Protecting our Waters program to prevent pollution caused by excess stormwater in the sewer system on rainy days.

Combined sewer overflows (CSOs) are relief points in older sewer systems that carry sewage and stormwater in the same pipe. When heavy rains fill the pipes, CSOs release sewage and stormwater into rivers, lakes, or Puget Sound.

King County and the City of Seattle are working together to control CSOs and keep sewage and stormwater out of local waterways.

construction phase

Who do I contact?

Monica Van der Vieren:
206-477-5502
 Monica.vandervieren
@kingcounty.gov

Project location

SMagnolia_CSO_SC_400

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