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DESCRIPTION:

Latitude 37°13'12.9",   Longitude 89°27'47.4"   NAD83

Alexander County, Illinois, Hydrologic Unit 07140105

Drainage area: 713,200 square miles

Datum of gage: 299.70 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1989-10-02	2026-01-18
Daily Data
Discharge, cubic feet per second	1933-04-01	2026-01-17	33150
Gage height, feet	1982-10-01	2026-01-18	15424
Suspended sediment discharge, short tons per day	1982-10-01	2021-09-29	14125
Suspended sediment concentration, water, unfiltered, estimated by regression equation, milligrams per liter	1982-10-01	2025-02-04	15048
Daily Statistics
Discharge, cubic feet per second	1933-04-01	2025-05-27	32929
Suspended sediment discharge, short tons per day	1982-10-01	2021-09-29	14125
Suspended sediment concentration, water, unfiltered, estimated by regression equation, milligrams per liter	1982-10-01	2022-09-30	14300
Monthly Statistics
Discharge, cubic feet per second	1933-04	2025-05
Suspended sediment discharge, short tons per day	1982-10	2021-09
Suspended sediment concentration, water, unfiltered, estimated by regression equation, milligrams per liter	1982-10	2022-09
Annual Statistics
Discharge, cubic feet per second	1933	2025
Suspended sediment discharge, short tons per day	1983	2021
Suspended sediment concentration, water, unfiltered, estimated by regression equation, milligrams per liter	1983	2022
Peak streamflow	1844-07-04	2023-03-06	92
Field measurements	1941-04-05	2026-01-14	3193
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1973-01-30	2024-03-01	1820
Water-Year Summary	2006	2024	19
Revisions	Loading...

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