Lineage Statement:
• The original V11.06.17 was incomplete and lacked several study areas from Cochise County. On 15 Dec., we uploaded a completed version 11.06.17.
• Version 11.06.17 was released on 29 Nov. 2017. Earlier versions are archived.
• Version 03.31.2014: With North Sulphur Springs Valley study area added on 1 April 2014.
• Version 12.27.12: With Elfrida and Croton Springs, Cochise County, added on 27 December 2012.
• Version 04.06.08: The Chandler Heights and Apache Junction study areas, completed Apr. 4th, 2008, released Apr. 23, 2008.
• Version 08.13.08: Addition of Mesa, Scottsdale and Toltec Buttes study areas. Also updated the Earth Fissure network in Chandler Heights study area, and updated the extent of Apache Junction study area. Completed Aug. 13th, 2008.
• Version 11.26.08: Addition of Luke and Pete's Corner study areas. Completed Nov. 11th, 2008, released Dec. 8, 2008.
• Version 2.11.09: Addition of Heaton, Wintersburg and Picacho study areas. Update to Luke study area. Completed Feb 11th, 2009, released Feb. 24, 2009.
• Version 6.22.09: Addition of Tator Hills, Friendly Corners, Harquahala and Signal Peak study areas. Completed 6/22/09.
• Version 11.30.09: Addition of Greene Wash and Dragoon Road study areas.
• Version 03.11.11: Addition of Sacaton Butte, White Horse Pass, Santa Rosa Wash and Three Sisters Buttes study areas.
• Version 04.05.12: Addition of Bowie San Simon study area in Cochise County.
• Version 01.26.15: Updates to Chandler Heights and Luke Study Area maps and added McMullen Valley and Avra Valley earth fissure study area maps.
• Version 05.11.15: Update to Wintersburg Study area map.
• Version 01.31.2016: Revised Chandler Heights, Santa Rosa Wash, North Sulphur Springs, Picacho & Friendly Corners, Dragoon Road and Luke. Also, released v 1.0 of Picacho SE.