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DESCRIPTION:

Latitude 41°48'54",   Longitude 87°49'16"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 2020 feet
Land surface altitude: 620.60 feet above NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1929-06-01	1953-01-01	10
Field/Lab water-quality samples	1929-10-21	1976-03-29	5
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