Latitude 41°18'39", Longitude 90°23'25" NAD27
Henry County, Illinois , Hydrologic Unit 07080104
Well depth: 460 feet Land surface altitude: 760
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer