Rain garden
Rain Garden
A Rain Garden (pronunciation: /reɪn ˈɡɑːr.dən/) is a planted depression or a hole that allows rainwater runoff from impervious urban areas, like roofs, driveways, walkways, parking lots, and compacted lawn areas, the opportunity to be absorbed. This reduces rain runoff by allowing stormwater to soak into the ground (as opposed to flowing into storm drains and surface waters which causes erosion, water pollution, flooding, and diminished groundwater).
Etymology
The term "Rain Garden" is derived from the English words "rain" and "garden". "Rain" (pronunciation: /reɪn/) comes from the Old English "regn", and "garden" (pronunciation: /ˈɡɑːr.dən/) comes from the Old North French "gardin".
Related Terms
- Bioretention: A process used in water-sensitive urban design that takes advantage of vegetation and soil to remove pollutants from stormwater runoff.
- Stormwater: Water that originates during precipitation events and snow/ice melt.
- Groundwater: The water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations.
- Erosion: The action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location.
- Water Pollution: The contamination of water bodies, usually as a result of human activities.
- Flooding: An overflow of water that submerges land that is usually dry.
External links
- Medical encyclopedia article on Rain garden
- Wikipedia's article - Rain garden
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