What are rain garden?

According to the EPA: A rain garden is a depressed area in the landscape that collects rain water from a roof, driveway or street and allows it to soak into the ground. Planted with grasses and flowering perennials, rain gardens can be a cost effective and beautiful way to reduce runoff from your property. 
 

Why are they important?

No person, creature or animal can live without water. Taking care of our waterways is vital to our survival. Rain gardens help filter out pollutants in runoff water before their enter our waterways by slowing down stormwater runoff and filtering out pollution in the runoff. They also provide food and shelter for butterflies, song birds and other wildlife.