Heart River near Mandan, ND
River level and flood forecast · Morton County
Normal8.9 ftas of Mon 3:15 PM
The river is 18.1 ft below flood stage (27 ft).
Flow: 21 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 | 38 ft |
| Moderate flood stage | 33 ft |
| Flood stage | 27 ft |
| Action stage | 25 ft |
| Record crest (April 4, 1952) | 35.75 ft |
What floods at each level
From the National Weather Service, highest first.
- 38 ftTown of Mandan will flood due to levees being overtopped at this level.
- 27 ftWooded banks and lowlands west of Mandan will flood above 17 feet.
Highest crests on record
- 35.75 ft — April 4, 1952
- 35.38 ft — March 22, 1987
- 34.85 ft — March 25, 1978
- 34.7 ft — March 27, 1943
- 34.35 ft — March 28, 1951
Recent crests: 15.78 ft (March 14, 2024) · 29.27 ft (April 14, 2023) · 13.48 ft (April 25, 2022) · 10.67 ft (March 11, 2021) · 15.76 ft (March 7, 2020)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MDNN8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.