>Yes, Mollison's book has a good system, though it's somewhat involved. > >I'm just thinking of building a cascading storage system out of plastic >drums - haven't quite figured out how - under each downspout, with a >release valve when they're full (with flow into the gardens).
Sorry, don't understand what you're looking for here. Are you looking to 'chain' drums together so you can save 2-300 gals of water at a time? Or...? Thanks
