Latitude 41°40'33", Longitude 87°59'59" NAD27
Cook County, Illinois , Hydrologic Unit 07120004
Well depth: 1493 feet Hole depth: 2284 feet
Land surface altitude: 596.1
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer