Latitude 38°40'57.8", Longitude 90°01'05.8" NAD83 Madison County, Illinois, Hydrologic Unit 07140101
Land surface altitude: 422.5 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