Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap


Visit for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

View the Enhanced Operating Capability Products and Services StoryMap here

Hydrograph River at a Glance Download
Big Sioux River above Canton Stage (ft)South Dakota DANRCBSS2(plotting HGIRG) Graph Created (1:19PM Jan 28, 2023)Flood Stage is 1235 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NAVD88
NOTE: No forecasts are available for this location

NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts are not available for the Big Sioux River above Canton. Only observed stages are available for this point.

Return to Area Map
Upstream Gauge - near Brandon Upstream Gauge Downstream Gauge Downstream Gauge - at Fairview
Flood Categories (in feet)
Major Flood Stage: 1240
Moderate Flood Stage: 1238
Flood Stage: 1235
Action Stage: 1233
Low Stage (in feet): 0

Historic Crests
(1) 1,246.72 ft on 06/16/2014
(2) 1,245.88 ft on 09/13/2019
(3) 1,245.00 ft on 04/10/1969
(4) 1,244.68 ft on 03/15/2019 (P)
(5) 1,242.20 ft on 06/22/2018
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,235.23 ft on 03/30/2020
(2) 1,245.88 ft on 09/13/2019
(3) 1,244.68 ft on 03/15/2019 (P)
(4) 1,242.20 ft on 06/22/2018
(5) 1,246.72 ft on 06/16/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
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
1245 Highway 18 begins to flood and major damage will occur to trees and fences throughout the flood plain.
1238 nearly all crop and pasture land in the 1/2 mile wide flood plain will be inundated.
1235 flooding begins to affect significant amounts of crop and pasture land.
About This Location Collapse

Latitude: 43.307060° N, Longitude: 96.528283° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 1235 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 0.00 1235.00 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Resources Collapse
Hydrologic Resources Additional Resources
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM
Privacy Policy
About Us
Career Opportunities