Aquifer Systems Mapping (1:48000)

Indiana Aquifer Systems

County specific unconsolidated and bedrock map series (2003-2011)

In 2003 the Resource Assessment Section started production of a new series of aquifer systems maps for the purpose of assessing Indiana’s groundwater resources. There are two maps per county; one for unconsolidated aquifer systems and one for bedrock aquifer systems. Mapping of the aquifer systems rely heavily on the Indiana DNR Division of Water Water Well Record Database  (about 400,000 records available online) along with other useful digital information (see Indiana Map ) where available (e.g. seismic data, bedrock topography maps, soil surveys, oil and gas wells). In addition, publications by the U.S. Geological Survey, Indiana Geological & Water Survey , and other entities were very helpful. Relatively uniform characteristics are the basis for the naming of an aquifer system. However, some variation between counties is possible.