미국
Datasets for the 2015 potentiometric surface and water-level changes (2011-2013, 2013-2015) in the Sparta-Memphis aquifer, in Arkansas
The groundwater-level change maps for the Sparta-Memphis aquifer are constructed as a point-to-point comparison between wells measured in both 2013 and 2015. Wells not measured in both 2013 and 2015 were not included in the change maps construction. The 2013-2015 change map contains 241 corresponding wells. Groundwater-level differences were calculated by subtracting 2013 groundwater-level measurements, in feet below land surface from the 2015 groundwater-level measurements, in feet below land surface.