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DESCRIPTION:

Latitude 41°48'40",   Longitude 87°52'44"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 1956 feet
Hole depth: 1957 feet
Land surface altitude: 645.95 feet above NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1909-01-01	1945-03-23	4
Field/Lab water-quality samples	1939-06-06	1946-05-06	2
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