What is the primary aim of stormwater management systems?

The primary aim of stormwater management systems is to manage the quantity of stormwater runoff. Effective stormwater management is crucial for preventing flooding, controlling water quality, and mitigating the impacts of urbanization on natural water systems. When it rains, urban areas generate significant amounts of runoff due to impervious surfaces like roads and rooftops. If this runoff is not properly managed, it can lead to erosion, flooding, and degradation of water quality in local waterways.

By focusing on managing the quantity of stormwater runoff, these systems help reduce peak flow rates and volume of water that enters drainage systems and natural waterways, thus preventing infrastructure overload and minimizing environmental impacts. This approach can involve a variety of techniques and practices, such as retention basins, permeable pavement, and green roofs, all aimed at controlling the amount of runoff and ensuring it is handled in a sustainable manner. The emphasis on quantity underscores the critical role that stormwater management plays in urban planning and environmental stewardship.