Latitude 41°02'08", Longitude 89°13'24" NAD27
Marshall County, Illinois , Hydrologic Unit 07130001
Well depth: 1870 feet Land surface altitude: 728
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer