Make a Rain Barrel
...n enormous cistern, something with a capacity in the neighborhood of around 10,000 gallons. Ideally houses here, as in the ancient Roman world, would have been built with huge underground holding tanks. A small rain barrel like this makes more sense for those of you who live in places with rain throughout the year, where a small amount of collected rainwater could be used to bridge a gap in rainstorms. I put this rain barrel together as a test and...