Rivers in South Dakota
Big Sioux River near Florence
Below flood stage
2.95ftStage
Observed Tue, Sep 22, 4:00 AM CDT
- Flood stage
- 8.00 ft
- Record crest
- 9.70 ft2023
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 9.00 ft |
| Moderate flood | 8.50 ft |
| Minor flood | 8.00 ft |
| Action | 7.00 ft |
- 12.00 ftThe bridge at the gauge and the bridge 2 miles south of the gauge are both overtopped
- 10.50 ftThe bridge 1 mile north of the gauge is overtopped
- 10.00 ftThe water reaches the bottom of the bridge at the gauge and the bridge 2 miles south of the gauge the bridge 1 mile east and 1 1/2 mile north of the gauge is overtopped
- 9.00 ftThe water reaches the bottom of the bridge 1 mile north of the gauge
- 8.50 ftThe water reaches the bottom of the bridge 1 mile east and 1 1/2 mile north of the gauge
Crest history
38 crests on NOAA’s list since 1984.
| # | Date | Stage |
|---|---|---|
| 1 | April 13, 2023 | 9.70 ft |
| 2 | April 2, 1997 | 9.52 ft |
| 3 | July 25, 1993 | 9.18 ft |
| 4 | March 29, 1986 | 9.08 ft |
| 5 | April 7, 2001 | 9.07 ft |
| 6 | March 11, 1995 | 9.02 ft |
| 7 | June 26, 2025 | 8.97 ft |
| 8 | March 27, 2019 | 8.95 ft |
| 9 | March 19, 1994 | 8.79 ft |
| 10 | March 17, 2009 | 8.50 ft |
| 11 | April 4, 2011 | 8.45 ft |
| 12 | June 11, 2008 | 8.36 ft |
| 13 | March 27, 1989 | 8.34 ft |
| 14 | March 17, 2010 | 8.24 ft |
| 15 | August 2, 1991 | 8.16 ft |
| 16 | May 16, 1998 | 8.12 ft |
| 17 | June 15, 1984 | 8.05 ft |
| 18 | June 19, 2014 | 8.01 ft |
| 19 | March 21, 2007 | 8.01 ft |
| 20 | March 11, 1996 | 7.94 ft |
| 21 | March 20, 1985 | 7.72 ft |
| 22 | June 30, 1992 | 7.72 ft |
| 23 | March 25, 1987 | 7.51 ft |
| 24 | July 10, 2005 | 7.48 ft |
| 25 | April 28, 2013 | 7.32 ft |
Most recent crests
- June 26, 2025: 8.97 ft
- April 13, 2023: 9.70 ft
- May 5, 2020: 6.89 ft
- March 27, 2019: 8.95 ft
- February 22, 2017: 6.37 ft
- April 26, 2016: 4.09 ft
- March 11, 2015: 5.67 ft
- June 19, 2014: 8.01 ft
- April 28, 2013: 7.32 ft
- April 18, 2012: 4.21 ft
Nearby
Upstream, downstream and the gauges around this one.
- DownstreamBig Sioux River at Watertown
- South Dakota Glacial Lakes at Bitter Lake
- Mud Creek at Rauville
- South Dakota Glacial Lakes at Blue Dog Lake
- Big Sioux River at Lake Kampeska
- South Branch Tributary Mud Creek at Rauville
- Big Sioux River at Watertown Sioux Conifer Road
- Lake Kampeska at Watertown Water Plant
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are not available. Only observed stages are available for this point. Stage may be affected by ice.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.