Latitude 41°31'42", Longitude 90°11'57" NAD27
Henry County, Illinois , Hydrologic Unit 07090007
Well depth: 490 feet Land surface altitude: 700
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer