Latitude 41°21'45", Longitude 88°26'09" NAD27 Grundy County, Illinois, Hydrologic Unit 07120005
Land surface altitude: 525 feet above sea level NGVD29. Well completed in "Cambrian-Ordovician aquifer system" (S300CAMORD) national aquifer. Well completed in "IRONTON-GALESVILLE" (372IRGL) local aquifer