“Capturing rainwater in a rain garden, holding the water for a short time and then slowly releasing it into the soil can reduce the rush of a large storm –quickly, neatly and naturally.” ~ Rain Garden Network
3.) Because rain gardens are dug 4″ to 8″ deep, and in some cases 1′ to 2′ deep, they hold large quantities of rainwater, making their overall construction more cost-efficient than other green alternatives. Rain gardens also need less technical experience to install and can be installed without permits or heavy equipment.
4.) Rain gardens are one very good option that helps to lower the impact of impervious surfaces and polluted runoff because they are low-tech, inexpensive, sustainable and aesthetically beautiful.