Rivers in South Dakota
Big Sioux River above Canton
Below flood stage
1225.6ftStage
Observed Tue, Sep 22, 1:00 AM CDT
- Flood stage
- 1235.0 ft
- Record crest
- 1248.3 ft2024
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 1245.0 ft |
| Moderate flood | 1238.0 ft |
| Minor flood | 1235.0 ft |
| Action | 1233.0 ft |
- 1245.0 ftHighway 18 begins to flood and major damage will occur to trees and fences throughout the floodplain.
- 1238.0 ftNearly all crop and pasture land in the 1/2 mile wide floodplain will be inundated.
- 1237.0 ftThe park on the south side of Canton begins to flood.
- 1236.0 ftThe parking lot at the Big Sioux access point off of Hwy 18 at the gauge location begins to flood.
- 1235.0 ftFlooding begins to affect significant amounts of crop and pasture land.
- 1233.0 ftThe parking lot of the Big Sioux Access point on the south side of Canton begins to flood.
Crest history
16 crests on NOAA’s list since 1969.
| # | Date | Stage |
|---|---|---|
| 1 | June 22, 2024 | 1248.3 ft |
| 2 | June 16, 2014 | 1246.7 ft |
| 3 | September 13, 2019 | 1245.9 ft |
| 4 | April 10, 1969 | 1245.0 ft |
| 5 | March 15, 2019 | 1244.7 ft |
| 6 | June 22, 2018 | 1242.2 ft |
| 7 | May 8, 1993 | 1240.5 ft |
| 8 | April 24, 2001 | 1239.2 ft |
| 9 | March 28, 1997 | 1237.9 ft |
| 10 | September 23, 1986 | 1237.7 ft |
| 11 | April 10, 2023 | 1236.0 ft |
| 12 | March 30, 2020 | 1235.2 ft |
| 13 | March 16, 2010 | 1235.0 ft |
| 14 | July 4, 1992 | 1234.8 ft |
| 15 | June 14, 1994 | 1233.3 ft |
| 16 | August 19, 2025 | 1229.3 ft |
Most recent crests
- August 19, 2025: 1229.3 ft
- June 22, 2024: 1248.3 ft
- April 10, 2023: 1236.0 ft
- March 30, 2020: 1235.2 ft
- September 13, 2019: 1245.9 ft
- March 15, 2019: 1244.7 ft
- June 22, 2018: 1242.2 ft
- June 16, 2014: 1246.7 ft
- March 16, 2010: 1235.0 ft
- April 24, 2001: 1239.2 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are not available. Only observed stages are available for this point. No forecasts are available for this location Gauge reading may be affected by ice.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.