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DESCRIPTION:

Latitude 41°40'44",   Longitude 88°00'03"   NAD27

Cook County, Illinois, Hydrologic Unit 07120004

Drainage area: 738.00 square miles

Datum of gage: 551.76 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2023-01-22	2026-01-23
Daily Data
Gage height, feet	2023-01-24	2026-01-22	1021
Field measurements	1957-11-05	1957-11-06	3
Revisions	Loading...

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