Description: Unconsolidated Aquifer Systems in Indiana , 1994 (1:500,000) - Shows unconsolidated aquifer systems in Indiana. Attributes include information regarding aquifer type, local names, aquifer thickness, and potential aquifer yields. Derived from the printed publication titled 'Hydrogeologic Atlas of Aquifers in Indiana' of the U.S. Geological Survey. Also of possible interest is the related data layer named 'Aquifers_Bedrock_USGS_IN', showing bedrock aquifer systems in Indiana. NOTE: These data should not be used for specific local data analysis.