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DESCRIPTION:

Latitude 41°39'24",   Longitude 91°32'27"   NAD27

Johnson County, Iowa, Hydrologic Unit 07080209

Drainage area: 3,271 square miles

Datum of gage: 617.27 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1986-10-01	2017-06-23
Daily Data
Temperature, water, degrees Celsius -- sediment station	1944-01-01	1987-09-29	12708
Discharge, cubic feet per second	1903-06-01	2017-06-22	41661
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- sediment station	1968-10-01	1981-09-28	3047
Suspended sediment concentration, milligrams per liter -- sediment station	1943-10-01	1987-09-29	15739
Suspended sediment discharge, short tons per day -- sediment station	1943-10-01	1987-09-29	16023
Specific conductance, water, unfiltered, laboratory, microsiemens per centimeter at 25 degrees Celsius -- sediment station	1981-10-02	1987-09-29	1290
Daily Statistics
Discharge, cubic feet per second	1903-06-01	2017-01-29	41517
Suspended sediment concentration, milligrams per liter -- sediment station	1943-10-01	1987-09-29	15739
Suspended sediment discharge, short tons per day -- sediment station	1943-10-01	1987-09-29	16023
Monthly Statistics
Discharge, cubic feet per second	1903-06	2017-01
Suspended sediment concentration, milligrams per liter -- sediment station	1943-10	1987-09
Suspended sediment discharge, short tons per day -- sediment station	1943-10	1987-09
Annual Statistics
Discharge, cubic feet per second	1903	2017
Suspended sediment concentration, milligrams per liter -- sediment station	1944	1987
Suspended sediment discharge, short tons per day -- sediment station	1944	1987
Peak streamflow	1851-06	2015-12-23	116
Field measurements	1903-06-02	2017-05-17	1323
Field/Lab water-quality samples	1901-01-01	2012-08-23	698
Water-Year Summary	2006	2016	11
Additional Data Sources	Begin Date	End Date	Count
Instantaneous-Data Archive  **offsite**	1986-10-01	2007-09-30	492435

OPERATION:

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