Latitude 41°04'38", Longitude 89°37'56" NAD27
Marshall County, Illinois , Hydrologic Unit 07120004
Well depth: 825 feet Land surface altitude: 850
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer