About The Illinois State Water Survey

Groundwater Science

Northern Logan County Groundwater Monitoring

McTazThe Illinois State Water Survey (ISWS), under contract to the Northern Logan County Water Authority, continuously monitors five wells:  SWS-E, SWS-10, SWS-08, MTH-22D, and MTH-22S. Two water levels are monitored at MTH-22, deep (labeled D) and shallow (labeled S). These four wells are part of the larger McTaz monitoring network, shown in the map. 

view real-time hydrographs for Northern Logan County

Illinois State Water Survey

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