Davidson, E.S., 1979, Summary appraisals of the nation's ground-water resources - Lower Colorado region: U.S. Geological Survey Professional Paper 813-R, 23 p., 3 sheets, scale 1:1,000,000.
Davidson, E.S., 1979, Summary appraisals of the nation's ground-water resources - Lower Colorado region: U.S. Geological Survey Professional Paper 813-R, 23 p., 3 sheets, scale 1:1,000,000.
Water Resources, Groundwater, Hydrology, Hydrogeology, Subsurface,