What is a rain garden's purpose?

Rain water picks up pollutants as it flows over hard surfaces such as rooftops, driveways, and compacted soils. These pollutants, like gasoline, motor oil, and pesticides, are then carried through storm drains directly into our local rivers, lakes, and streams. When rain water is allowed to soak back into the ground through a rain garden, some of these toxic materials are removed by plant and animal microorganisms living in the soil. Rain gardens also slow the flow of runoff to help with erosion control and flood prevention.

Show All Answers

1. What is a rain garden?
2. What is a rain garden's purpose?
3. Why build a rain garden?
4. Why use recycled materials in a rain garden?
5. Why use native plants in a rain garden?
6. How can I build a rain garden?
7. What is low impact development (LID)?