Louisiana ground water map no. 8, potentiometric surface, 1991, and water-level changes, of the Carrizo-Wilcox aquifer in northwestern Louisiana Potentiometric surface, 1991, of the Carrizo-Wilcox aquifer in northwestern Louisiana Carrizo-Wilcox aquifer in northwestern Louisiana Louisiana ground water map no. VIII, potentiometric surface, 1990, Louisiana aquifer system
Relief shown by contours. Also available online in PDF format from the U.S. Geological Survey Warehouse (http:/pubs.er.usgs.gov/). "Prepared in cooperation with the Louisiana Department of Transportation and Development, Public Works and Flood Control Directorate, Water Resources Section." Includes text, 1 table, 7 profiles, and location map.