USGS Surface Water for USA: Streamflow Measurements

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Streamflow Measurements for the Nation

Pennington County, South Dakota

Hydrologic Unit Code 10120110

Latitude 44°03'33", Longitude 103°17'02" NAD27

Drainage area 387 square miles

Contributing drainage area 387 square miles

**Period of record**
Begin Date	End Date	Count
1987-07-14	2018-10-16	87

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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: 2025-09-06 18:31:59 EDT
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