What practice can communities implement to reduce stormwater runoff?

The practice of installing rain gardens and permeable pavements is effective in reducing stormwater runoff because these solutions are designed to allow water to infiltrate into the ground rather than flow over impervious surfaces. Rain gardens, which are shallow, vegetated basins that capture and absorb runoff, promote the absorption of rainwater while also improving water quality by filtering pollutants. Permeable pavements, on the other hand, are surfaces that allow water to pass through them, reducing the volume of runoff that contributes to flooding and water pollution.

This method of stormwater management aligns with green infrastructure principles, which focus on natural processes to manage water and mitigate potential environmental impacts. By enhancing groundwater recharge and reducing the speed and quantity of stormwater runoff, these practices help maintain the natural hydrology of the area and can improve local ecosystems.

In contrast, building more concrete drainage systems, increasing the height of existing buildings, or creating more impermeable surfaces would likely worsen runoff issues by either directing more water into drainage systems or increasing the amount of surface area that water cannot penetrate.