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DESCRIPTION:

Latitude 38°38'05",   Longitude 88°17'50"   NAD83

Clay County, Illinois, Hydrologic Unit 05120114

Drainage area: 1,131 square miles

Datum of gage: 391.92 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2025-06-18
Daily Data
Discharge, cubic feet per second	1914-08-22	2025-06-17	40478
Gage height, feet	1993-10-02	2025-06-17	11356
Daily Statistics
Discharge, cubic feet per second	1914-08-22	2025-04-05	40405
Gage height, feet	1993-10-02	2025-04-05	11283
Monthly Statistics
Discharge, cubic feet per second	1914-08	2025-04
Gage height, feet	1993-10	2025-04
Annual Statistics
Discharge, cubic feet per second	1914	2025
Gage height, feet	1994	2025
Peak streamflow	1915-08-22	2024-01-29	110
Field measurements	1929-04-12	2025-06-03	503
Field/Lab water-quality samples	1974-10-18	2021-12-16	278
Water-Year Summary	2006	2024	19
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