Digitized Contour from Georeferenced plate 2007  from "Potentiometric Surface in the Sparta-Memphis Aquifer of the Mississippi Embayment, Spring 2007" (Shrader, 2008; version 1.1, April 2021)
The most widely used aquifer for industry and public supply in the Mississippi embayment in Arkansas, Louisiana, Mississippi, and Tennessee is the Sparta-Memphis aquifer. Decades of pumping from the Sparta-Memphis aquifer have affected ground-water levels throughout the Mississippi embayment. Regional assessments of …