Latitude 41°18'22", Longitude 90°29'13" NAD27
Mercer County, Illinois , Hydrologic Unit 07120004
Well depth: 650 feet Land surface altitude: 780
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer