Latitude 41°29'40", Longitude 87°40'46" NAD27
Cook County, Illinois , Hydrologic Unit 07120003
Well depth: 350 feet Land surface altitude: 695
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer