1. Louisiana ground-water map no. 11 : potentiometric surface, spring, 1993, and water-level changes, 1987-93, of the Gonzales-New Orleans Aquifer in southeastern Louisiana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Baton Rouge, La.] : U.S. Department of the Interior, U.S. Geological Survey, 1995 Resource Type: Map Access & Availability: Loading