Version history for Gungle, Bruce, 2007, Timing and duration of flow in ephemeral streams of the Sierra Vista subwatershed of the upper San Pedro Basin, Cochise County, southeastern Arizona: U.S. Geological Survey Scientific Investigations Report 2005-5190, version 2.0 [available on the World Wide Web at http://pubs.usgs.gov/sir/2005/5190/ ]. Version 2.0 Revised February 27, 2007. Version 1.0, 2006 Initial release online at http://pubs.usgs.gov/sir/2005/5190/