Latitude 41°40'14", Longitude 87°36'53" NAD27
Cook County, Illinois , Hydrologic Unit 07120003
Well depth: not determined. Land surface altitude: 590.57
feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Racine Formation" (355RCIN) local aquifer