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DESCRIPTION:

Latitude 41°49'00.2",   Longitude 87°45'12.5"   NAD83

Cook County, Illinois, Hydrologic Unit 07120003

Drainage area: 296.00 square miles

Datum of gage: 579.20 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2007-10-01	2025-12-30
Daily Data
Gage height, feet	2007-09-18	2025-12-29	6646
Daily Statistics
Gage height, feet	2007-09-18	2025-07-28	6493
Monthly Statistics
Gage height, feet	2007-09	2025-07
Annual Statistics
Gage height, feet	2007	2025
Field measurements	1976-06-01	2010-11-04	66
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2023-03-31	2023-07-13	2
Water-Year Summary	2011	2024	14
Revisions	Loading...

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