Latitude 42°06'09", Longitude 87°54'15" NAD27
Cook County, Illinois , Hydrologic Unit 07120004
Well depth: 200 feet Land surface altitude: 645
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian Dolomite" (350SIDO) local aquifer