Potentiometric surface of the Sparta aquifer in eastern and south-central Arkansas and north-central Louisiana, and the Memphis aquifer in east-central Arkansas, October 1996-July 1997
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aquifer in 1995 Aquifer in Eastern aquifer in north-central aquifer was measured Arkansas and North-Central ARKANSAS GEOLOGICAL COMMISSION ARKANSAS SOIL Bienville Parish BRADLEY COUNTY Claiborne Parish Columbia and Union cones of depression Cook Mountain Date of Latitude datum altitude Date degrees depression descending Depth to Water descending below sea direction of ground-water Eastern and South-Central feet above land-surface feet above measure feet above sea feet below datum ground-water flow Hosman Land-surface altitude feet land-surface feet Latitude Longitude feet level water Land-surface limit of freshwater LINCOLN PARISH Long-term hydrographs Louisi LOUISIANA DEPARTMENT Memphis Sand ment Aquifer Mississippi Alluvial Plain north-central Louisiana number sea level Ouachita Parish outcrop and subcrop PHILLIPS COUNTY recharge zone Saline County selected wells completed South-Central Arkansas Spana Sparta and Memphis Sparta aquifer Sparta Sand study area subcrop area TRANSPORTATION AND DEVELOPMENT U.S. Geological Survey Union Parish water Land-surface altitude Water level water water-level declines Water-level hydrographs Webster Parish