National Weather Service Advanced Hydrologic Prediction Service

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This probabilistic forecast is issued by the Missouri Basin River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental) Not Available

About this graph

Forecasts for the Big Sioux River near Watertown are issued as needed during times of high water, but are not routinely available.

Vertical datum height surveyed by the USGS

Return to Area Map

Downstream Gauge

Zoom Level:14

Flood Categories (in feet)

Major Flood Stage:	12
Moderate Flood Stage:	10
Flood Stage:	8
Action Stage:	7
Low Stage (in feet):	-9999

Historic Crests
(1) 12.49 ft on 04/06/1997
(2) 11.58 ft on 04/07/2001
(3) 11.40 ft on 04/08/1969
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.07 ft on 06/17/2017
(2) 4.83 ft on 04/29/2016
(3) 7.45 ft on 03/12/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

	Gauge Location	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

If you notice any errors in the below information, please contact our Webmaster
14	The bridge on Sioux Conifer Road is overtopped.
12	Sioux Conifer Road floods south of the gauge, and water reaches the bottom of the bridge at the gauge.
10	Significant amounts of pasture land are flooded.
8	Minor lowland flooding begins, mainly upstream of the gauge.

Other Real-time and/or Archive Data Sources:

U.S. Geological Survey (USGS) Data and Site Info for Watertown

Additional Information

How low could the river get?

Collaborative Agencies

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
Aberdeen Weather Forecast Office
824 Brown County 14 South
Aberdeen, SD 57401
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Page last modified: 7-Nov-2019 3:33 PM

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