William G. Milliken State Park

The second phase of Detroit's Milliken State Park includes a wetlands demonstration area that showcases nature's water filtration.

Collected stormwater passes through a swirl separator to remove suspended solids, oil and grease. The stormwater is then pumped into a four-foot deep sediment forebay, which allows additional sediment to drop out before entering three-foot deep pools with emergent plants. Finally, the water passes through 18-inch deep braided wetland streams to increase vegetation and stormwater interaction for maximum filtering, before passing over a weir and entering the river.

Find further information here and here.

Country: 
United States
City: 
Michigan
Implementation: 
Phase 2 Lowland Park
Budget: 
4,4 Mio. US $
Area: 
2,4 ha
Year: 
2010