Latitude 41°46'19", Longitude 87°53'37" NAD27
Cook County, Illinois , Hydrologic Unit 07120004
Well depth: 0400 feet Hole depth: 414 feet
Land surface altitude: 707
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer