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A rain garden is any landscaping that filters and absorbs stormwater (rainwater) runoff from a nearby impervious surface such as a roof, driveway, parking lot or street. Many rain gardens are installed around an overflow drain or other overflow route, just in case there is more runoff than the garden can easily absorb.
The garden can be a simple cluster of rocks beneath a roof downspout that has been disconnected from underground drains. It can be a complex ecosystem full of varied plants, insects and other animals. It can be a vast pond, hosting ducks and serving as the focal point of a neighbourhood. Our imaginations are the only limit.
Click on the sidebar links for more information about rain gardens, including descriptions of several rain garden projects coordinated by Cougar Creek Streamkeepers.