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This probabilistic forecast is issued by the Missouri Basin River Forecast Center.
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About this graph
Forecasts for the Big Sioux River at Sioux Falls I-90 are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - near Dell Rapids Upstream Gauge
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 17
Moderate Flood Stage: 15
Flood Stage: 12
Action Stage: 11
Low Stage (in feet): -9999

Historic Crests
(1) 19.80 ft on 04/10/1969
(2) 18.91 ft on 09/14/2019
(3) 16.92 ft on 03/26/2019
(4) 16.80 ft on 06/23/1984
(5) 16.32 ft on 04/07/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.80 ft on 03/15/2020
(2) 18.91 ft on 09/14/2019
(3) 16.92 ft on 03/26/2019
(4) 16.30 ft on 04/28/2018
(5) 15.32 ft on 03/25/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
21 the levees protecting Sioux Falls are overtopped.
20.5 the levees immediately upstream of the gage will be overtopped.
19.5 levees downstream on diversion channel will be overtopped if all flow of around 37000 cfs is being diverted.
18.5 60th Street north of the airport begins to flood.
17 flooding begins to affect roads, homes, and businesses in Renner.
15 some farm buildings between Renner and Sioux Falls are threatened by high water.
12 some agricultural land between 60th Street North and Interstate 90 begins to flood.
11 minor flooding of some ditches upstream of Sioux Falls begins.
Photos
(1) Upstream View
(2) Downstream View

Other Real-time and/or Archive Data Sources:
Additional Information Collapse
How low could the river get?
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
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Page last modified: 2-Nov-2020 7:29 PM 		Disclaimer
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