Latitude 38°32'13.6", Longitude 89°57'15.1" NAD83 St Clair County, Illinois, Hydrologic Unit 07140204
Land surface altitude: 545 feet above sea level NGVD29. Well completed in "Sand and gravel aquifers (glaciated regions)" (N100GLCIAL) national aquifer. Well completed in "QUATERNARY SYSTEM" (110QRNR) local aquifer