What is the role of a storm drain system?

The role of a storm drain system is primarily to manage stormwater runoff. These systems are designed to collect and transport excess rainwater or melted snow away from urban areas, preventing flooding and reducing the risk of water pooling on streets and other surfaces. By efficiently directing stormwater into appropriate drainage areas, storm drain systems help to maintain public safety and reduce erosion.

Stormwater runoff can carry pollutants, debris, and sediments from impervious surfaces, so managing this runoff is crucial for protecting water quality in nearby rivers, lakes, and oceans. Effective stormwater management also plays an essential part in reducing the potential for combined sewer overflows in areas where stormwater and sewage systems are linked. Thus, the primary function of a storm drain system is to facilitate the safe and efficient handling of stormwater to mitigate its impacts on the environment and urban infrastructure.