From a barrel sitting under a down spout rainwater collection can increase dramatically in capacity, complexity, and cost. The above-ground rain barrels we talked about earlier in the week are limited by size. The larger barrels aren't very attractive and one that holds 75 gallons is a sizable piece of plastic to have parked near the foundation. Most that we looked at were about 3 feet high and over two feet in diameter and the water at full capacity weighs 625 pounds which requires a heavy grade...