USGS Surface Water for USA: Streamflow Measurements

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Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Streamflow Measurements for the Nation

440212104003001 1N 1E21BACA

Pennington County, South Dakota

Hydrologic Unit Code 10120107

Latitude 44°02'12", Longitude 104°00'30" NAD27

Land-surface elevation 6,630 feet above NGVD29

Spring discharges from the Paleozoic aquifers (N500PLOZOC) national aquifer.

Spring discharges from the Pahasapa Limestone (337PHSP) local aquifer.

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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: 2025-09-14 04:32:48 EDT
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