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DESCRIPTION:

Latitude 41°48'21.9",   Longitude 87°48'40.4"   NAD83

Cook County, Illinois, Hydrologic Unit 07120004

Drainage area: 631.60 square miles

Datum of gage: 578.64 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2013-10-22	2025-12-01
Daily Data
Gage height, feet	2013-10-21	2025-11-30	4323
Daily Statistics
Gage height, feet	2013-10-21	2025-07-28	4199
Monthly Statistics
Gage height, feet	2013-10	2025-07
Annual Statistics
Gage height, feet	2014	2025
Water-Year Summary	2014	2024	11
Revisions	Loading...

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