Wetland channels constructed in downtown Rapid City, South Dakota, effectively reduced many pollutants in stormwater runoff, according to a recent U.S. Geological Survey report.Measurements collected by the USGS during 2013-14 showed that concentrations of total suspended solids, metals, nutrients and bacteria decreased in runoff to Rapid Creek when stormwater was routed through wetland channels in downtown Rapid City. However, chloride concentrations increased, likely due to the movement of salts deposited during prior runoff events.“Water quality is important because the portion of Rapid Creek that flows through Rapid City is a valuable spawning area for trout, is used for recreation and is a
Rapid City Reduces Pollution in Stormwater Runoff
Diverting stormwater runoff to wetland channels is credited with improving water quality of Rapid Creek
