Geophysics at multiple scales to address groundwater depletion in the Mississippi River Valley Alluvial Aquifer

James Rigby, USDA Agricultural Research Service Oxford, Oxford, MS, United States, Burke J Minsley, USGS Geology, Geophysics, and Geochemistry Science Center, Denver, CO, United States and Wade Hampton Kress, U.S. Geological Survey, Lower Mississippi-Gulf Water Science Center, Nashville, TN, United States