July 25, 2019

Manchester Stormwater Park

The Green Futures Lab has monitored the effectiveness of Kitsap County’s Manchester Stormwater Park in treating pollutants from the upstream contributing basin, collecting and analyzing samples over the course of one year. Results indicate that both the system of level perimeter wetland cells filled with proprietary soil media, and the vertical spiral rain gardens with a standard biofiltration mix, are especially effective at treating bacteria and metals that are present in the runoff. Cleaning stormwater from over 70 acres in just over 6000 square feet of treatment area, while also providing a park for farmer’s markets, celebrations, relaxation, and education, the project demonstrates the potential effectiveness of “Waterfront Stormwater Solution” regional facilities that are also valuable community assets.

Our video about the new park, including time-lapse construction, can be seen here.