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.
How to Make a Rain Barrel. Want to save water and have a healthier lawn or garden? A rain barrel is a way to collect some of the rainwater that lands on your house so you can use it later. While rainwater is not recommended for cooking or.