Rain Gardens - What and Why

What and Why

Articles and websites discussing the reasons for considering a rain garden: 

When you take water out of our spongy river delta soils
               a) organic matter oxidize and shrinks
               b) the particles of that soil collapse onto one another.
The link below contains articles that are the source of that information,. but it is also an invaluable site on the the City of New Orleans' plan for adopting a new relationship with water

www.livingwithwater.com

 In the three years before Katrina, most parts of the city sank 8 mm. per year. Some parts – those that received the worst flooding – sank at annual rate of 28.8 mm per year. 

(http://earthobservatory.nasa.gov/IOTD/view.php?id=6623)

New City of New Orleans water management plan announced; city planning also makes changes to encourage homeowners to capture rainwater (9/2013)


The U.S. EPA is researching rain gardens as strategy for keeping older cities with combined sewer outlets in compliance with clean water act: 

https://www.youtube.com/watch?v=Dh38rZvyGxg

This is a release from La. DEQ that identifies dispersal of pollutants as an important reason for establishing a rain garden, and also gives basic guidelines that are a little looser and more suited to Louisiana than the University of Wisconsin guidelines might be. 1 page.
http://nonpoint.deq.louisiana.gov/images/education/FactSheets/Pub2994-J%20NPS%20Rain%20Gardens.pdf

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