I have wanted rain barrels for a while, and the new barn and its metal roof would be the perfect location. And the barn is uphill from the garden. I can easily gravity feed the garden with water from the rain barrels. The only thing really holding me back, besides the lack of a barn, was the cost of new rain barrels and/or the lack of time to make our own. Well, this past weekend at Rodale's cold crop sale we bought two brand new very nice and very inexpensive rain barrels. Now I only need a barn!