Alicia Garcia, 633rd Civil Engineer Squadron environmental flight Natural Resource Program manager, screws a tap into a rain barrel during a rain harvesting workshop at Joint Base Langley-Eustis, Va., April 17, 2017. According to Dawn Christian, 633rd Civil Engineer Squadron environmental flight water program manager, just one inch of rain on a 1,200 sq. ft. roof equals 748 gallons of free water for plants, lawns and bird baths. (U.S. Air Force photo/Airman 1st Class Anthony Nin Leclerec)