Digitized Contour from Georeferenced Plate 2012  from "Potentiometric Surface, 2012, and Water-Level Differences, 2005-2012, of the Sparta Aquifer in North-Central Louisiana" (McGee and Brantly, 2015)
The Sparta aquifer is used in 15 parishes in north-central Louisiana, primarily for public supply and industrial purposes. Of those parishes, eight (Bienville, Claiborne, Jackson, Lincoln, Ouachita, Union, Webster, and Winn) rely on the Sparta aquifer as their principal source of groundwater. In 2010, withdrawals from …