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DESCRIPTION:

Latitude 42°18'33",   Longitude 88°15'05"   NAD27

Mchenry County, Illinois, Hydrologic Unit 07120006

Drainage area: 1,250 square miles

Datum of gage: 729.98 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2007-10-01	2025-09-01
Daily Data
Gage height, feet	2002-09-30	2025-08-31	8187
Daily Statistics
Gage height, feet	2002-09-30	2025-05-28	8092
Monthly Statistics
Gage height, feet	2002-09	2025-05
Annual Statistics
Gage height, feet	2002	2025
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2019-04-01	2023-11-14	40
Water-Year Summary	2006	2024	19
Revisions	Loading...

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