Skirvin, S.M., 1991, Use of processed Landsat Thematic Mapper data to detect surface soil moisture over mountain pediments, southeastern Arizona: Tucson, University of Arizona, M.S. thesis, 57 p.
Kennard, Michele, Johnson, A.E., and Perry, T.W., 1988, Preliminary report on the hydrology of Cienega Creek Groundwater Basin: Arizona Department of Water Resources, Division of Hydrology, Special Studies, 11 p.
E.L. Montgomery and Associates, 1985, Water adequacy report: Stage one development, Empirita Ranch area, Pima County, Arizona: Arizona Department of Water Resources, contractor report, 48 p.
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,  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,  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.
Pima Association of Governments, 1994, Water quality: State of the region report: Tucson, Ariz.,  p.
Tellman, Barbara, Glass, Clint, Wallace, John, and Fuller, J.E., 2000, An overview of Pima County's watersheds and watercourses: Pima County, Ariz., Sonoran Desert Conservation Plan Report, 215 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.