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DESCRIPTION:

Latitude 41°12'30",   Longitude 88°55'51"   NAD27

Lasalle County, Illinois, Hydrologic Unit 07130002

Drainage area: 1,251 square miles

Datum of gage: 520.58 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1986-09-05	2017-06-22
Daily Data
Discharge, cubic feet per second	1931-05-08	2017-06-21	31457
Gage height, feet	1993-10-01	2017-06-21	8313
Suspended sediment concentration, milligrams per liter	1980-06-01	1981-09-29	486
Suspended sediment discharge, short tons per day	1980-06-01	1981-09-29	486
Daily Statistics
Discharge, cubic feet per second	1931-05-08	2017-01-28	31313
Gage height, feet	1993-10-01	2017-01-28	8169
Suspended sediment concentration, milligrams per liter	1980-06-01	1981-09-29	486
Suspended sediment discharge, short tons per day	1980-06-01	1981-09-29	486
Monthly Statistics
Discharge, cubic feet per second	1931-05	2017-01
Gage height, feet	1993-10	2017-01
Suspended sediment concentration, milligrams per liter	1980-06	1981-09
Suspended sediment discharge, short tons per day	1980-06	1981-09
Annual Statistics
Discharge, cubic feet per second	1931	2017
Gage height, feet	1994	2017
Suspended sediment concentration, milligrams per liter	1980	1981
Suspended sediment discharge, short tons per day	1980	1981
Peak streamflow	1931-06-07	2015-12-29	86
Field measurements	1971-09-01	2017-06-07	388
Field/Lab water-quality samples	1974-10-07	2017-05-31	366
Water-Year Summary	2006	2016	11
Additional Data Sources	Begin Date	End Date	Count
Instantaneous-Data Archive  **offsite**	1986-09-05	2007-09-30	589440

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