Report 51 By J. Russell Mount, Frank A. Rayner, Victor M. Shamburger, Jr., Richard C. Peckham, and Fred L. Osborne, Jr. | July 1967

• Report 51 - Reconnaissance Investigation of the Ground-Water Resources of the Colorado River Basin, Texas (15.6 MB pdf)
• Figure 2 - Areas of Colorado River Basin Included in Published Ground-Water Reports
• Figure 3 - Mean Annual Precipitation in Colorado River Basin, 1931-1955, and Average Monthly Precipitation for Period of Record at Selected Stations
• Figure 5 - Areal Extent of Fresh Water in Primary and Secondary Aquifers of the Colorado River Basin
• Figure 9 - Northwest-Southeast Geologic Section, Edwards Plateau, Region II, Colorado River Basin
• Table 1 - Geologic Units and their water-bearing characteristics