Long, A.E., Brown, J.G., and Gellenbeck, D.J., 1997, Statistical analysis of nitrate in ground water, west Salt River Valley, Arizona: Arizona Department of Environmental Quality Open-File Report 97-16, 38 p. [also available as U.S. Geological Survey Water-Resources Investigations Report 97-4185]
Lower Gila River
Arizona State Land Department, 1974, Arizona Lower Colorado River Resource Area: Arizona State Land Department, Report to President of Senate and Speaker of House, Pursuant to Senate Bill 1331, Thirty First Legislature, First Regular Session, April 1974,  p., 12 sheets, approx. scale 1:25,000.
United States Bureau of Reclamation, 1978, Ground-water status report, 1977, Yuma area, Arizona-California: Yuma, Ariz., U.S. Bureau of Reclamation, Yuma Projects Office, 49 p., 7 plates.
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.
Arizona Department of Water Resources, 1999, Third Management Plan for Pinal Active Management Area, 2000-2010: Arizona Department of Water Resources, 438 p.
Arizona Department of Water Resources, 1999, Third Management Plan for Phoenix Active Management Area, 2000-2010: Arizona Department of Water Resources, 545 p.
U.S. Geological Survey, 1974, Ground-water levels decline in the Dateland-Hyder area, in Geological Survey research 1974: U.S. Geological Survey Professional Paper 900, p. 88.
Bedinger, M.S., Sargent, K.A., and Langer, W.H., 1990, Studies of geology and hydrology in the Basin and Range province, southwestern United States for isolation of high-level radioactive waste - Evaluation of the regions: U.S. Geological Survey Professional Paper 1370-H, p. H1-61, 7 plates, scale 1:1,000,000.
Gellenbeck, D.J., and Coes, A.L., 1999, Ground-water quality in alluvial basins that have minimal urban development, south-central Arizona: U.S. Geological Survey Water-Resources Investigations Report 99-4005, 27 p.
Rauzi, S.L., 2002, Luke salt deposit: Arizona Geological Survey, Map 36, 1 sheet, scale 1:63,360.