Rain gardens catch, filter, and hold stormwater. They are designed in pocket-like depressions to capture rainwater from roofs, drives, and uplands.
Resource Library 12,000 Rain Gardens
Rain garden - Wikipedia
Cornell Cooperative Extension Rainscaping: Gardening for Water Quality
Extension Helps Alabama Herb Society Promote Clean Watersheds - Alabama Cooperative Extension System
Rain Gardens N.C. Cooperative Extension
vcedigitalpubs - 426-128(BSE-277P)-Best Management Practice Fact Sheet 9: Bioretention - page 3
Alabama Rain Garden Brochure, PDF, Stormwater
LID
Rainscaping Your Yard to Protect Water Quality - Alabama Cooperative Extension System
Resource Library 12,000 Rain Gardens