Geodatabase of the available top and bottom surface datasets that represent the Mississippian aquifer, Alabama, Illinois, Indiana, Iowa, Kentucky, Maryland, Missouri, Ohio, Pennsylvania, Tennessee, Virginia and West Virginia
This geodatabase includes spatial datasets that represent the Mississippian 
aquifer in the States of Alabama, Illinois, Indiana, Iowa, Kentucky, Maryland, 
Missouri, Ohio, Pennsylvania, Tennessee, Virginia and West Virginia. The 
aquifer is divided into three subareas, based on the data availability. In 
subarea 1 …