UNITED STATES
New Mexico
Rainwater-harvesting greenhouse strategies for the southwest U.S.
Paul Cross of Charybda Greenhouse Farm in Arroyo Hondo, NM
newfarm.rodaleinstitute.org/depts/talking_shop/0404/newmexico2.shtml
and
greenfiretimes.com/2010/03/one-way-to-conserve-on-the-ranch-and-farm/

Iowa
“Rainwater Harvesting from a High Tunnel (Greenhouse) for Irrigation Use,” by Shawn Shouse, Iowa State University Extension and Outreach, PM 3017.
downloadable document and video

ITALY
Rainwater-harvesting greenhouses in Venice, Italy
www.treehugger.com/clean-water/rainwater-harvesting-in-venice-will-help-keep-it-from-sinking.html