Detention Ponds improve storm water quality through physical and biological processes. As storm water flows through the detention pond, sediment particles settle-out and become trapped within the permanent pool of water. Wetland vegetation and microorganisms provide additional pollutant removal. Common storm water pollutants include sediment, nutrients, heavy metals, bacteria, chlorides, oil and grease, pesticides, and volatile organic compounds. The primary sources of these pollutants include construction sites, agriculture runoff, fertilizers, pesticides, soil erosion, pet an wildlife waste, road salt, automobiles (leaks, exhaust and tire wear) and home heating.
Garner's Creek Detention Ponds contain a gravel trail for pond maintenance. Routine maintenance is to include removal of debris and litter, inspection of outlet structures and embankments, and landscaping maintenance. Less frequent maintenance is to include sediment removal within the permanent pool of water. The frequency of sediment removal depends on the adequacy of construction site erosion controls, agriculture conservation practices, and stream buffer maintenance.
These Detention Ponds are planted with prairie grasses, wild flowers, wetland plants and trees to enhance wildlife habitat and discourage Canadian Geese from taking residence within the detention pond.