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DESCRIPTION:

Latitude 41°49'33",   Longitude 87°54'01"   NAD83

Cook County, Illinois, Hydrologic Unit 07120004

Drainage area: 115 square miles

Contributing drainage area: 115.0 square miles,

Datum of gage: 624.72 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1986-09-01	2025-09-03
Daily Data
Discharge, cubic feet per second	1945-10-01	2025-09-02	29190
Gage height, feet	1994-02-28	2025-09-02	11262
Daily Statistics
Discharge, cubic feet per second	1945-10-01	2025-07-21	29148
Gage height, feet	1994-02-28	2025-07-21	11220
Monthly Statistics
Discharge, cubic feet per second	1945-10	2025-07
Gage height, feet	1994-02	2025-07
Annual Statistics
Discharge, cubic feet per second	1946	2025
Gage height, feet	1994	2025
Peak streamflow	1946-01-09	2023-07-02	78
Field measurements	1954-10-12	2025-07-22	461
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1974-10-11	2013-08-07	510
Water-Year Summary	2006	2024	19
Revisions	Loading...

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