USGS Surface Water for USA: Peak Streamflow

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Peak Streamflow for the Nation

USGS 06483950 BIG SIOUX RIVER NEAR HAWARDEN, IA

Union County, South Dakota

Hydrologic Unit Code 10170203

Latitude 43°03'05", Longitude 96°29'22" NAD27

Drainage area 7,566 square miles

Contributing drainage area 6,682 square miles

Gage datum 1,150.00 feet above NAVD88

Water Year	Date	Gage Height (feet)	Stream- flow (cfs)
2015	2015-07-09	18.30	6,290
2016	2016-05-02	22.38	11,300
2017	2017-05-23	20.35	8,180
2018	2018-06-22	34.00	50,800
2019	2019-03-15	35.20	58,100
2020	2020-03-30	23.02	12,500
2021	2021-08-30	17.30	5,070
2022	2022-06-01	18.88	6,820
2023	2023-04-13	22.89	12,400
2024	2024-06-22	39.92	164,000²

Peak Streamflow Qualification Codes.

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

Page Contact Information: USGS Water Data Support Team
Page Last Modified: 2025-02-19 15:44:23 EST
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