How do low-impact development strategies primarily improve stormwater management?

Low-impact development (LID) strategies are designed to mimic natural processes and minimize the effects of urbanization on the environment, particularly concerning stormwater management. One of the primary ways LID strategies improve stormwater management is by reducing both the volume and velocity of stormwater runoff.

These strategies often incorporate features such as permeable pavements, green roofs, rain gardens, and bioswales. These elements enhance the infiltration of rainwater into the ground, allowing more water to be absorbed into the soil rather than running off into storm sewers, which can lead to flooding and water pollution. By allowing water to soak into the ground, LID reduces the amount of runoff that needs to be managed in the first place, helping to protect local water bodies and aquifers from contamination and excess sedimentation.

Moreover, by slowing down the movement of stormwater through landscape features designed to capture and retain water, LID techniques help decrease the peak flow rates during storms. This reduction in velocity minimizes the likelihood of erosion and helps maintain the natural hydrology of the area, promoting healthier ecosystems.

Overall, the focus of LID on reducing both stormwater volume and velocity is essential for effective stormwater management and contributes significantly to sustainable development practices.