Geology of the Mahomet Aquifer in Champaign County

Geology of the Mahomet Aquifer

On March 21, 2013, Illinois State Geological Survey (ISGS) staff members Bill Dey and Andrew Stumpf made a presentation titled “Geology of the Mahomet Aquifer” to the Board of the Champaign County Forest Preserve District. Their presentation provided an overview of a project undertaken by the ISGS to study the geology and hydrogeology of the Mahomet aquifer in Champaign County. The project was funded through a contract with the Illinois American Water Company.

Specifically, information was provided to the Board regarding the installation and monitoring of groundwater observation wells that are located at the River Bend, Sangamon River, and Middle Fork River Forest Preserves. The water levels in these wells are currently being monitored by the ISGS, the Illinois State Water Survey, and the United States Geological Survey to help better understand the flow of groundwater in the Mahomet aquifer and the overlying aquifers. This information is being used to construct 3-D models of the geology and hydrogeology of Champaign County. Understanding how groundwater flows in three dimensions is imperative so that government agencies, private industry, stakeholder groups, and local governments can develop long-range water-supply management plans to utilize this important natural resource in the most efficient and effective manner.

Download an Adobe Acrobat file (.pdf) of the PowerPoint slides and associated annotated text at Geology of the Mahomet Aquifer CCFPD Board Meeting Presentation (pdf)