Missouri River at Decatur, IA
River level and flood forecast · Burt County
Normal19.3 ftas of Mon 3 PM
The river is 15.7 ft below flood stage (35 ft).
Flow: 27,300 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 41 ft |
| Moderate flood stage | 38 ft |
| Flood stage | 35 ft |
| Action stage | 33 ft |
| Record crest (April 16, 1952) | 44.41 ft |
What floods at each level
From the National Weather Service, highest first.
- 44 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 ftExtensive flooding along the reach would be encountered. Areas impacted will include Marina Drive as well as numerous homes along the river.
- 35 ftLocal marinas, boat docks and low lying areas begin to flood.
Highest crests on record
- 44.41 ft — April 16, 1952
- 40.24 ft — July 21, 2011
- 37.55 ft — June 26, 2024
- 36.51 ft — March 17, 2019
- 36.42 ft — September 20, 2019
Recent crests: 26.3 ft (February 27, 2025) · 37.55 ft (June 26, 2024) · 23.19 ft (February 2, 2023) · 21.73 ft (August 16, 2022) · 21.8 ft (September 1, 2021)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (DCTN1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.