What should be kept low to achieve effective stormwater management?

To achieve effective stormwater management, it is crucial to keep runoff from the site low. Excessive runoff can lead to various environmental problems, including erosion, sedimentation, water pollution, and flooding. When runoff is minimized, it allows for better infiltration of water into the ground, reducing the volume and velocity of water that leaves the site. This not only helps in maintaining the natural hydrology of the area but also protects water quality by reducing the transport of pollutants into nearby waterways.

Effective stormwater management practices aim to capture and manage rainfall on-site through techniques such as permeable surfaces, retention basins, and bioretention systems. These practices mitigate the impacts of urban development by slowing down or capturing stormwater, promoting groundwater recharge, and maintaining ecosystem health.

Keeping runoff low is a fundamental principle of sustainable land development and planning, making it essential for protecting both the environment and infrastructure.