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DESCRIPTION:

Latitude 42°59'45",   Longitude 97°22'10"   NAD27

Yankton County, South Dakota, Hydrologic Unit 10160011

Drainage area: 20,962 square miles

Contributing drainage area: 18,906 square miles,

Datum of gage: 1,154.08 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1990-10-01	2024-11-22
Daily Data
Discharge, cubic feet per second	1981-07-10	2024-11-21	10727
Gage height, feet	2018-05-01	2024-11-21	1748
Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen	2019-04-30	2024-11-21	877
Daily Statistics
Discharge, cubic feet per second	1981-07-10	2023-10-03	10312
Gage height, feet	2018-05-01	2023-10-03	1405
Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen	2019-04-30	2024-10-27	852
Monthly Statistics
Discharge, cubic feet per second	1981-07	2023-10
Gage height, feet	2018-05	2023-10
Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen	2019-04	2024-10
Annual Statistics
Discharge, cubic feet per second	1981	2024
Gage height, feet	2018	2024
Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen	2019	2025
Peak streamflow	1982-06-02	2023-05-05	37
Field measurements	1981-07-10	2024-10-02	354
Field/Lab water-quality samples	1981-10-07	2020-10-21	269
Water-Year Summary	2010	2024	15
Revisions	Loading...

OPERATION:

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

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

ADDITIONAL INFORMATION

National Weather Service Floodstage 12.0 ft.