Wolff, R.C., 1982, Physical properties of rocks- Porosity, permeability, distribution coefficients, and dispersivity: U.S. Geological Survey Open-File Report 82-166, 118p.
Hoffman, J.P., Pool, D.R., Konieczki, A.D., and Carpenter, M.C., 1997, Investigation of the causes of sinks in the San Xavier District, Tohono O'Odham Nation, Pima County, Arizona: U.S. Geological Survey Open-File Report 97-0019, 2 sheets, scales 1:6,000, and 1:12,000.
Babcock, H.M., 1972, Bibliography of U.S. Geological Survey water-resources reports for Arizona, May 1965 through June 1971: Arizona Water Commission Bulletin 2, 60 p.
Barnes, R.L., 1988, Basic groundwater data for the Rillito River Recharge Project, Tucson, Pima County, Arizona: Arizona Department of Water Resources Open File Report no. 5, 38 p.
Reeter, R.W., and Cady, C.V., 1982, Maps showing ground-water conditions in the Avra/Altar Valley area, Pima and Santa Cruz Counties, Arizona - 1981: Arizona Department of Water Resources Hydrologic Map Series Report no. 7, 2 sheets, scale 1:125,000.
Schwalen, H.C., 1942, Rainfall and runoff in the upper Santa Cruz River drainage basin: Tucson, University of Arizona, College of Agriculture, Agricultural Experiment Station, Technical Bulletin no. 95, p. 421-472, 1 sheet, scale 1:450,000.
Schwalen, H.C., and Shaw, R.J., 1957, Ground water supplies of the Santa Cruz Valley of southern Arizona between Rillito Station and the international boundary: Tucson, University of Arizona, College of Agriculture, Agricultural Experiment Station, Bulletin 288, 119 p., 7 sheets, scales 1:130,000 and 1:155,000.
Nowlan, G.A., 1995, Analytical results and other information for 415 water samples collected from wells, springs, and streams, 1976-1987, Pima, Pinal, and Maricopa Counties, Arizona: U.S. Geological Survey Open-File Report 95-0546, 1 5.25-inch diskette (MS-DOS).
White, N.D., Stulik, R.S., Morse, E.K., and others, 1964, Annual report on ground water in Arizona, Spring 1963 to Spring 1964: Arizona State Land Department Water Resources Report no. 19, 60 p.
U.S. Geological Survey, 1980, Water resources data for Arizona, Water year 1979: U.S. Geological Survey Water-Data Report AZ-79-1, 614 p.