About The Illinois State Water Survey

Groundwater Science

Mahomet Aquifer East

Mahomet_East

With funding provided by the Illinois-American Water Company, the ISWS monitors water levels via a network of observation wells in the Champaign and Urbana region of the Mahomet Aquifer system.  The main purpose of the network is to collect long-term data to study how the aquifer is impacted by large groundwater withdrawals for public, industrial, and irrigation uses. This monitoring also helps ISWS scientists uncover how the aquifer is recharged, how it interacts with streams, and how it responds to droughts and floods.

 

 

The ISWS initiated monitoring water levels in the Mahomet Aquifer just west of Champaign in 1953 to help resolve a dispute between the petro-chemical company in Tuscola and the water utility serving Champaign and Urbana. The 1990’s interest in understanding groundwater flow prompted state funding of the Aquifer Assessment Program. This monitoring network was greatly expanded in 2007-2009 with funding provided by Illinois American Water. The hydrologic behavoir of the Mahomet Aquifer is described the water supply planning report, Development of an observation well network in the Mahomet Aquifer of East-Central Illinois (under additional information).

 

The video, linked below, shows the daily deviation in groundwater levels from the mean aquifer level at each of the wells monitoring with pressure transducers. It shows the response of the aquifer to flooding in Piatt County, irrigation in Champaign County, and pumpage by the City of Decatur in DeWitt County.

 

Link to Mahomet Aquifer video  

 

The following wells are equipped with real-time data. Click on a well to view the hydrograph and download the data.

 



Illinois State Water Survey

2204 Griffith Dr., MC-674
Champaign, IL 61820-7463
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