3rd UF Water Institute Symposium Abstract

Submitter's Name Nichelle Demorest
Session Name Posters - Innovative Biological, Physical, and Chemical Nutrient Reduction & Recovery Technologies
Category Innovative biological, physical, and chemical nutrient reduction & recovery technologies
Poster Number 29
Author(s) Nichelle Demorest,  UF/IFAS Columbia County Extension (Presenting Author)
  Providing for natural bio-filtering processes in an existing stormwater detention basin
  Stormwater runoff is directed into detention basins from the impermeable roofing and paving surfaces that have replaced natural landscapes. Oil and grease from vehicles and other particulate matter that are deposited on the surfaces are washed into basins. Top soil, organic material and significant numbers of microorganisms have been removed during the construction of the basin. In areas of deep, predominantly sand basins, stormwater infiltrates quickly into the groundwater. Without plants, organic matter, or sufficient microbes, pollutants are not retained or adsorbed long enough to be degraded. To reestablish more natural bio-filtering processes, native plants were planted in groups throughout the basin floor and banks. Native plants tolerant of occasional flooding were planted in the low areas. The banks were planted with species tolerant of extended dry periods and have good roots systems to stabilize the banks. Composted hardwood fines were incorporated into the planting site of each grouping as introduction of organic material and microorganisms. The entire area was then covered with two to three inches of shredded hardwood mulch to keep down weeds, retain moisture, and add to the organic material. This biodiversity of native plants on site also sustains wildlife. The project was designed with the intent of sharing this information with builders and developers, and with homeowners interested in constructing rain gardens on their property. The project was funded through a grant from The Wildlife Foundation of Florida.