Magnolia Wet Weather Storage Facility at Smith Cove
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
The 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.