Stormwater drainage refers to the system designed to manage excess rainwater or melted snow that flows over surfaces like roads, parking lots, and rooftops. This water is collected and directed away from urban areas to prevent flooding and erosion. Proper stormwater management helps protect water quality by filtering pollutants before they reach natural water bodies. The components of stormwater drainage systems include drainage ditches, storm drains, and retention ponds. These elements work together to channel water safely and efficiently. By controlling stormwater, communities can reduce the risk of property damage and maintain healthier ecosystems.