http://en.wikipedia.org/wiki/Rain_garden
http://www.lowimpactdevelopment.org/raingarden_design/whatisaraingarden.htm
http://www.cmhc-schl.gc.ca/en/co/maho/la/la_005.cfm
Rain Gardens - A how-to manual for homeowners
Designing Rain Gardens - Biological Agricultural Engineering ...
http://raingardens.melbournewater.com.au/
http://water.greenventure.ca/rain-gardens
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