Written by Industry Expert Emily Walsh, Environmental Scientist
As communities continue to expand and infrastructure is heightened, stormwater management is becoming a crucial element in neighborhood planning. Oftentimes, community developers incorporate stormwater retention ponds into their plans to help control runoff during significant rain events. Retention or stormwater ponds look similar to natural ponds, except that their major function is to reduce the risk of flooding as well as filter collected pollutants.
Urban runoff is led to the pond through a series of stormwater drains leading to underground pipes. The majority of the water is then left within the stormwater BMP, allowing suspended particulates to settle and pollutants to break down through microbial activity and plant uptake. The water is then slowly released from an outflow pipe, positioned higher than the inflow pipe, to a nearby waterbody or stream. This has proven to be an efficient technique, with a detectable decrease in pollutants shown and a natural outflow rate achieved.