Latitude 41°30'43", Longitude 87°39'12" NAD27
Cook County, Illinois , Hydrologic Unit 07120003
Well depth: 406 feet Hole depth: 406 feet
Land surface altitude: 665.00
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer