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Peak Streamflow for the Nation

USGS 06485950 BIG SIOUX RIVER AT SIOUX CITY, IA

Woodbury County, Iowa
Hydrologic Unit Code 10170203
Latitude  42°31'28", Longitude  96°28'48.7" NAD27
Drainage area 8,430  square miles
Contributing drainage area 7,546  square miles
Gage datum 1,060 feet above NAVD88
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
Reselect output format
Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
2015 2015-07-10 15.091 4,720
2016 2016-05-04 19.04 11,000
2017 2017-05-26 17.73 8,850
2018 2018-06-26 31.911 40,400
2019 2019-03-17 37.461 61,600
2020 2020-04-02 21.412 12,200
2021 2021-09-01 12.642 3,230
2022 2022-06-02 14.94 6,450
2023 2023-04-15 18.57 12,500
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  Peak Gage-Height Qualification Codes.