Latitude 41°31'41.3", Longitude 88°40'24.2" NAD83 La Salle County, Illinois, Hydrologic Unit 07120007
Land surface altitude: 585 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