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DESCRIPTION:

Latitude 41°48'39",   Longitude 87°52'47"   NAD27
Cook County, Illinois   , Hydrologic Unit 07120004

Well depth: 1962 feet
Hole depth: 2005 feet
Land surface altitude: 640 feet above NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1944-05-22	1944-05-22	1
Field/Lab water-quality samples	1918-08-05	1949-11-22	3
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