Rain Barrels Work!
October 15 2010 | Know Your H20,
by Rick Wilson
They found that the rain barrels significantly reduced the flow of pollutants to storm drains as they redirected rain to landscaped areas.
San Diego is in the early stages of studying programs like a successful rain barrel program in Los Angeles to learn best practices to reduce runoff to watersheds. San Diego also is looking at rain gardens and other methods of "rainwater redirection."
Read more and also read the rain barrel pilot study report.