USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Union County, South Dakota

Hydrologic Unit Code 10170203

Latitude 42°37'35", Longitude 96°30'55" NAD27

Drainage area 8,400 square miles

Contributing drainage area 7,516 square miles

Gage datum 1,070 feet above NAVD88

**Period of record**
Begin Date	End Date	Count
2015-02-24	2024-12-10	80

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://waterdata.usgs.gov/nwis/measurements?

Page Contact Information: South Dakota Water Data Support Team
Page Last Modified: 2024-12-28 20:14:19 EST
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