Suggested citation and version history for Constantz, Jim, Adams, Kelsey S., and Stonestrom, David A., 2007, Overview of ground-water recharge study sites, in Stonestrom, David A., Constantz, Jim, Ferre, Ty P.A., and Leake, Stanley A., eds., Ground- water recharge in the arid and semiarid southwestern United States: U.S. Geological Survey Professional Paper 1703-C, p. 61-82 [http://pubs.usgs.gov/pp/pp1703/c/]. Version 1.0, March 11, 2008 Initial release online at http://pubs.usgs.gov/pp/pp1703/c/