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DESCRIPTION:

Latitude 41°25'25.6",   Longitude 91°28'42.7"   NAD83

Louisa County, Iowa, Hydrologic Unit 07080209

Drainage area: 4,293 square miles

Datum of gage: 588.16 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2017-06-26
Daily Data
Discharge, cubic feet per second	1956-10-01	2017-06-25	22183
Daily Statistics
Discharge, cubic feet per second	1956-10-01	2017-02-25	22063
Monthly Statistics
Discharge, cubic feet per second	1956-10	2017-02
Annual Statistics
Discharge, cubic feet per second	1957	2017
Peak streamflow	1944-05-25	2015-12-16	61
Field measurements	1949-11-22	2017-06-20	902
Field/Lab water-quality samples	1958-08-23	2012-08-15	156
Water-Year Summary	2006	2016	11
Additional Data Sources	Begin Date	End Date	Count
Instantaneous-Data Archive  **offsite**	1990-10-01	2007-09-30	311601

OPERATION:

Record for this site is maintained by the USGS Iowa Water Science Center

Email questions about this site to Iowa Water Science Center Water-Data Inquiries