Tombstone Hills

Wallace, D.E., and Cooper, L.R., 1970, Dispersion of naturally occurring ions in groundwater from various rock types in a portion of the San Pedro River basin, Arizona: Journal of Hydrology, v. 10, no. 4, p. 391-405.

Arizona Department of Water Resources, 1990, Preliminary hydrographic survey report for the San Pedro River watershed, Volume 1: General assessment, In re The general adjudication of the Gila River system and source: [Phoenix], Arizona Department of Water Resources, [630] p.

Soil Conservation Service, Economic Research Service, Forest Service, and Arizona Water Commission, 1977, Santa Cruz-San Pedro River basin, Arizona: Resource inventory: U.S. Department of Agriculture Soil Conservation Service, [350] p.

Wynn, Jeff, 2001, Mapping groundwater in three dimensions: An analysis of the airborne geophysical surveys of the upper San Pedro River basin, Cochise County, southeastern Arizona, with an interpretation of where the groundwater lies: U.S. Geological Survey Open-File Report 00-0517, 70 p., 2 sheets, scales 1:100,000 and 1:200,000.

Bultman, M.W., Gettings, M.E., and Wynn, Jeff, 2002, An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona: U.S. Geological Survey Open-File Report 99-0007-b, CD-ROM.

Wynn, Jeff, and Gettings, Mark, 1997, A preliminary interpretation of the 1997 airborne electromagnetic (EM) survey over Fort Huachuca, Arizona, and the Upper San Pedro River basin: U.S. Geological Survey Open-File Report 96-0651, 42 p.

Rojo, H.A., Bredehoeft, John, Lacewell, Ronald, Price, Jeff, Stromberg, Julie, and Thomas, G.A., 1998, Sustaining and enhancing riparian migratory bird habitat on the upper San Pedro River: Public review draft, 15 June 1998, prepared for the Secretariat of the Commission for Environmental Cooperation, 141 p.

Barnes, R.L., 1997, Maps showing groundwater conditions in the Upper San Pedro Basin, Cochise, Graham, and Santa Cruz Counties Arizona--1990: Arizona Department of Water Resources Hydrologic Map Series Report no. 31, 2 sheets, scale 1:250,000.

Williams, M.D., 1985, Evapotranspiration in southeast Arizona semi-arid watersheds: Walnut Gulch and Cienega Creek: Tucson, University of Arizona, M.S. thesis, 183 p.

Daquan, Tian, 1993, Rainfall spatial and seasonal variability analysis in semi-arid watersheds: Tucson, University of Arizona, M.S. thesis, 113 p.