Latitude 41°43'15", Longitude 87°31'31" NAD27 Cook County, Illinois, Hydrologic Unit 04040001
Well depth: 68 feet Hole depth: 68 feet Land surface altitude: 592feet above sea level NAVD88. Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer. Well completed in "Niagara Dolomite" (355NIGR) local aquifer