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Understanding the Hydrologic Characteristics and Absorption Capacity of Bioretention Areas Kathryn Shepard
 

Summary: Understanding the Hydrologic Characteristics and Absorption Capacity of Bioretention Areas
Kathryn Shepard
Advanced Crop and Soil Sciences Seminar
Wednesday, April 6, 2011 at 3:35 pm
Miller Plant Sciences Building, Room 2401
Historically, stormwater management has focused primarily on flood control and stormwater
diversion into local streams and rivers, but with the introduction of low impact development techniques,
such as bioretention ponds, management strategies are now able to focus on on-site treatment of both
water quantity and quality issues. From a water quantity stand point, bioretention areas are thought to
help restore pre-development hydrologic conditions by providing storage for stormwater runoff. A new
bioretention area located off New River Rd on the University of Georgia, Athens campus, will be
monitored to accurately determine the hydrologic impacts of bioretention areas. We will calculate the
water balance of the bioretention area using measured inflow and outflow volumes, time domain
reflectometry data, and precipitation records. Hydrographs from each storm event will be measured and
used to evaluate the hydrologic impact bioretention areas have on urban areas. From a water quality
stand point, bioretention areas have been shown effective in retaining large volumes of runoff pollutants
and consistently reducing pollutant concentrations in stormwater runoff although, there is concern
surrounding pollutant accumulation and how long optimum pollutant removal can persist. To further
investigate this issue, water quality samples will be collected from the inflow and outflow waters of the
bioretention area and analyzed for total Kjeldahl nitrogen, oil and grease, total phosphorus, heavy metals,

  

Source: Arnold, Jonathan - Nanoscale Science and Engineering Center & Department of Genetics, University of Georgia

 

Collections: Biotechnology