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DESCRIPTION:

Latitude 42°09'43",   Longitude 88°17'38"   NAD83

Mchenry County, Illinois, Hydrologic Unit 07120006

Drainage area: 1,429 square miles

Datum of gage: 719.22 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2009-10-01	2025-09-04
Daily Data
Temperature, water, degrees Celsius	2016-06-30	2025-09-03	4758
Discharge, cubic feet per second	2009-09-30	2025-09-02	5817
Gage height, feet -- (DOWNSTREAM TAILWATER)	2009-09-30	2025-09-02	5725
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2016-06-30	2025-09-03	4742
Dissolved oxygen, water, unfiltered, milligrams per liter	2016-06-30	2025-09-03	4601
pH, water, unfiltered, field, standard units	2016-06-30	2018-10-10	1467
Daily Statistics
Temperature, water, degrees Celsius	2016-06-30	2018-10-10	488
Discharge, cubic feet per second	2009-09-30	2025-07-21	5774
Gage height, feet -- (DOWNSTREAM TAILWATER)	2009-09-30	2025-07-21	5682
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2016-06-30	2018-10-10	486
Dissolved oxygen, water, unfiltered, milligrams per liter	2016-06-30	2018-10-10	434
Monthly Statistics
Temperature, water, degrees Celsius	2016-06	2018-10
Discharge, cubic feet per second	2009-09	2025-07
Gage height, feet -- (DOWNSTREAM TAILWATER)	2009-09	2025-07
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2016-06	2018-10
Dissolved oxygen, water, unfiltered, milligrams per liter	2016-06	2018-10
Annual Statistics
Temperature, water, degrees Celsius	2016	2019
Discharge, cubic feet per second	2009	2025
Gage height, feet -- (DOWNSTREAM TAILWATER)	2009	2025
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2016	2019
Dissolved oxygen, water, unfiltered, milligrams per liter	2016	2019
Peak streamflow	2010-05-13	2024-04-08	15
Field measurements	2009-08-05	2025-09-03	118
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2013-06-04	2013-06-04	1
Water-Year Summary	2006	2024	19
Revisions	Loading...

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