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DESCRIPTION:

Latitude 40°17'39",   Longitude 90°04'06"   NAD83

Mason County, Illinois, Hydrologic Unit 07130003

Drainage area: 18,299 square miles

Datum of gage: 424.40 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Daily Data
Discharge, cubic feet per second	1921-10-01	1989-09-30	3756
Daily Statistics
Discharge, cubic feet per second	1921-10-01	1989-09-30	3756
Monthly Statistics
Discharge, cubic feet per second	1921-10	1989-09
Annual Statistics
Discharge, cubic feet per second	1922	1989
Peak streamflow	1922-04-20	1989-09-17	11
Field measurements	1984-10-23	2019-05-06	45
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1996-10-23	2023-07-17	5
Revisions	Loading...

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