Missouri River at Decatur
Observed Tue, Sep 22, 3:00 PM CDT
- Flood stage
- 35.00 ft
- Record crest
- 44.41 ft1952
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 41.00 ft |
| Moderate flood | 38.00 ft |
| Minor flood | 35.00 ft |
| Action | 33.00 ft |
- 44.00 ftWidespread major flooding would be prevalent along the entire reach from just upstream of Decatur downstream to the mouth of the Little Sioux River.
- 38.00 ftExtensive flooding along the reach would be encountered. Areas impacted will include Marina Drive as well as numerous homes along the river.
- 35.00 ftLocal marinas, boat docks and low lying areas begin to flood.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 23, 2026.
Crest history
43 crests on NOAA’s list since 1952.
| # | Date | Stage |
|---|---|---|
| 1 | April 16, 1952 | 44.41 ft |
| 2 | July 21, 2011 | 40.24 ft |
| 3 | June 26, 2024 | 37.55 ft |
| 4 | March 17, 2019 | 36.51 ft |
| 5 | September 20, 2019 | 36.42 ft |
| 6 | June 3, 2019 | 35.72 ft |
| 7 | June 26, 1984 | 34.60 ft |
| 8 | July 18, 1996 | 32.31 ft |
| 9 | July 16, 1993 | 32.19 ft |
| 10 | June 27, 2018 | 32.18 ft |
| 11 | April 15, 1997 | 31.99 ft |
| 12 | August 6, 2010 | 31.73 ft |
| 13 | June 20, 2014 | 31.01 ft |
| 14 | June 2, 1995 | 30.10 ft |
| 15 | April 28, 2001 | 28.89 ft |
| 16 | July 22, 1999 | 28.21 ft |
| 17 | June 29, 1983 | 28.10 ft |
| 18 | June 17, 1994 | 27.70 ft |
| 19 | April 2, 2020 | 27.64 ft |
| 20 | February 27, 2025 | 26.30 ft |
| 21 | June 26, 2000 | 26.24 ft |
| 22 | July 11, 2009 | 25.74 ft |
| 23 | September 16, 1988 | 25.59 ft |
| 24 | November 29, 1998 | 25.55 ft |
| 25 | March 14, 2007 | 25.38 ft |
Most recent crests
- February 27, 2025: 26.30 ft
- June 26, 2024: 37.55 ft
- February 2, 2023: 23.19 ft
- August 16, 2022: 21.73 ft
- September 1, 2021: 21.80 ft
- April 2, 2020: 27.64 ft
- September 20, 2019: 36.42 ft
- June 3, 2019: 35.72 ft
- March 17, 2019: 36.51 ft
- June 27, 2018: 32.18 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. 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.