Latitude 41°29'21", Longitude 87°33'50" NAD27
Cook County, Illinois , Hydrologic Unit 07120003
Well depth: 0470 feet Land surface altitude: 650
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer