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DESCRIPTION:

Latitude 41°48'27",   Longitude 87°54'40"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 1913 feet
Hole depth: 1913 feet
Land surface altitude: 642.00 feet above NGVD29.
Well completed in "Cambrian-Ordovician aquifer system" (S300CAMORD) national aquifer.
Well completed in "Ironton-Galesville" (372IRGL) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1966-08-24	2019-07-15	11
Field/Lab water-quality samples	1966-08-01	2017-08-07	20
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