How can rain gardens help manage stormwater?

Rain gardens are designed to manage stormwater effectively by collecting and infiltrating runoff. They consist of native plants and soil media that allow water to percolate into the ground rather than pooling on impermeable surfaces. This process helps reduce flooding during periods of heavy rainfall, as the garden acts as a temporary reservoir that can hold excess water and slow its release into the drainage system.

Additionally, rain gardens improve water quality by filtering pollutants such as sediments, nutrients, and chemicals from the stormwater before it reaches local waterways. The plants in the garden uptake some of these pollutants, and the soil acts as a natural filter. This dual function of reducing both flooding and enhancing water quality is fundamental to effective stormwater management practices, making this option the most accurate representation of how rain gardens contribute to managing stormwater issues.

The other choices do not align with the goals or functions of rain gardens. The creation of artificial lakes does not address runoff infiltration and can often lead to additional management challenges. Planting non-native species can have adverse ecological effects and does not support the purpose of promoting local biodiversity and soil health. While increased evaporation rates can occur in any vegetated area, it is not a primary mechanism by which rain gardens manage stormwater. The core purpose centers