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DESCRIPTION:

Latitude 42°17'24",   Longitude 87°57'11"   NAD27
Lake County, Illinois   , Hydrologic Unit 07120004

Well depth: 227 feet
Hole depth: 227 feet
Land surface altitude: 685 feet above NGVD29.
Well completed in "Silurian-Devonian aquifers" (N400SLRDVN) national aquifer.
Well completed in "Silurian System" (350SLRN) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field groundwater-level measurements	1951-02-27	1986-03-12	4
Field/Lab water-quality samples	1985-06-25	1986-03-12	2
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