More ideas from Sebastien
Rain barrels are essential to organic gardening.  What a great and easy idea!  in places where water is short some time of the year...  I have a 6 barrel system that collects from the roof.  It would go in to the storm drain and end up in a retention pond.  My garden gets the extra water when restrictions are in place.

This is great since we don't have any outdoor hose hookups! How to Build a Rain Barrel. A dual barrel system that uses atmospheric pressure to equalize the water volume in both rain barrels. Use the water from your rain barrels to water your plants.