Latitude 41°23'53", Longitude 90°25'41" NAD27
Henry County, Illinois , Hydrologic Unit 07090005
Well depth: 540 feet Land surface altitude: 730
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer