Sparta-Memphis aquifer water level altitude contour dataset in Arkansas, January-May 2013 (ver. 1.2, June 2021)
This dataset contains 20-ft contours for the 2013 Sparta-Memphis aquifer potentiometric-surface map in Arkansas.  The potentiometric-surface shows altitudes at which the water levels would have risen in tightly-cased wells and represents conditions during the period from January through May 2013. Groundwater-level …