Hydrologic Data and Analysis of Proposed Storm Water Management Site on Warren Wilson College Campus
Committee: Mark Brenner, Robert Hastings
Stormwater runoff can erode landscapes and transport contaminants into water systems that are used for recreation, drinking water, and habitat for plants and wildlife. Contaminants can include sediment and nutrients such as nitrogen and phosphorus. The stormwater management area at the South Lane entrance to the Warren Wilson College campus frequently floods during rain events and discharges into the Swannanoa River. The area has been proposed for grant funding for a retention wetland. A constructed wetland in the study area would increase the detention time, prevent flooding of the South Lane entrance, reduce erosion, allow sediment to settle out, allow nutrients to be taken up by plant life, and increase the quality of water being discharged into the Swannanoa River. Analysis of the stormwater runoff was performed to determine baseline data on total suspended solids, biochemical oxygen demand, and concentrations of nitrate, phosphorus, and ammonia. The data found in this study will be considered when the final redesign of the site is conducted. Key words: constructed wetland; retention pond; runoff; stormwater management; Swannanoa River; Warren Wilson College; water quality.