51. Generalized potentiometric surface of the Sparta-Memphis aquifer, eastern Arkansas, spring 1980 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Little Rock, Arkansas : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Map Access & Availability: Loading
52. Generalized potentiometric surface of the Catahoula aquifer in central Louisiana, 1980 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Baton Rouge, La.] : Department of the Interior, U.S. Geological Survey, 1986 Resource Type: Map Access & Availability: Loading
53. Generalized potentiometric surface of the aquifers in the Cockfield Formation, southeastern Arkansas, spring 1980 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Little Rock, Arkansas : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Map Access & Availability: Loading
54. Generalized potentiometric surface of shallow aquifers in southern Mississippi, 1982 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Jackson, Mississippi : Department of the Interior, U.S. Geological Survey, 1988 id est 1989 Resource Type: Map Access & Availability: Loading
55. Generalized altitude and configuration of the water table in parts of Larimer, Loogan, Sedgwick, and Weld Counties, Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Washington, D.C. : Department of the Interior, United States Geological Survey, 1983 Resource Type: Map Access & Availability: Loading
56. Ground-water resources of Saipan, Commonwealth of the Northern Mariana Islands Author/Creator: Carruth, R. L. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2003] Resource Type: Map Access & Availability: Loading