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DESCRIPTION:

Latitude 41°57'11",   Longitude 87°51'15"   NAD27

Cook County, Illinois, Hydrologic Unit 07120004

Drainage area: 444.00 square miles

Contributing drainage area: 444.00 square miles,

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Field measurements	1986-06-16	1990-09-18	25
Field/Lab water-quality samples	1978-09-19	1997-04-07	195
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