Richard, S.M., Reynolds, S.J., Spencer, J.E., and Pearthree, P.A., comps., 2000, Geologic Map of Arizona: Arizona Geological Survey Map M-35, 1 sheet, scale 1:1,000,000.
San Pedro River
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.
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.
Realmuto, V.J., 1990, Mapping the distribution of wet soils through the use of reflectance modeling: Dragoon Mountains, Cochise County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 167 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.
Catlin, C.N., 1926, Character of the ground-water resources of Arizona: Tucson, University of Arizona, College of Agriculture, Agricultural Experiment Station, Bulletin no. 114, p. 173-293.
Smith, H.V., Caster, A.B., Fuller, W.H., Breazeale, E.L., and Draper, George, 1949, The chemical composition of representative Arizona waters: Tucson, University of Arizona, College of Agriculture, Agricultural Experiment Station, Bulletin 225, 76 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.