Latitude 41°12'10", Longitude 90°26'28" NAD27
Mercer County, Illinois , Hydrologic Unit 07080104
Well depth: 658 feet Land surface altitude: 790
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer