. . . . . . . . . . . . . "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"@en . "Louisiana groundwater map no. 11, potentiometric surface, Spring, 1993, and water level changes, 1987-93, of the Gonzales - New Orleans Aquifer in southeastern Louisiana"@en . "Maps"@en . . .