Suggested citation and version history for Stonestrom, David A., and Harrill, James R., 2007, Ground-water recharge in the arid and semiarid southwestern United States; climatic and geologic framework, 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-A, p. 1-27 [http://pubs.usgs.gov/pp/pp1703/a/]. Version 1.0, March 11, 2008 Initial release online at http://pubs.usgs.gov/pp/pp1703/a/