Red River of the North at Oslo, MN
River level and flood forecast · Marshall County
Normal7.6 ftas of Mon 3 PM
The river is 18.4 ft below flood stage (26 ft).
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 | 36 ft |
| Moderate flood stage | 30 ft |
| Flood stage | 26 ft |
| Action stage | 23 ft |
| Record crest (April 1, 2009) | 38.37 ft |
What floods at each level
From the National Weather Service, highest first.
- 42.2 ftTop of the permanent levee upstream of Highway 1.
- 41.2 ftTop of the permanent levee downstream of Highway 1.
- 41 ftCity of Oslo Evacuation Action Plan initiated.
- 37.5 ftState Highway 1 overtops (MN DOT).
- 37 ftWater affects the Canadian Pacific railroad tracks west of Oslo.
- 36.5 ftND State Highway 54 has water over the road.
- 36 ftMAJOR FLOOD.
- 35.79 ftTop of the Walsh County agricultural dikes in Walshville Township.
- 35 ftNorth of Oslo Highway 220 and 317 typically overtop.
- 30 ftMODERATE FLOOD. Levee and floodwall patrols begin.
- 26 ftMINOR FLOOD.
- 23 ftACTION STAGE/FORECAST SERVICE STAGE. Pump operations begin.
- 21 ftCity begins closing flood gates.
Highest crests on record
- 38.37 ft — April 1, 2009
- 38.09 ft — April 14, 2011
- 38.01 ft — April 10, 2020
- 38 ft — April 23, 1997
- 37.91 ft — April 12, 1978
Recent crests: 26.1 ft (March 30, 2026) · 16.44 ft (May 27, 2025) · 25.41 ft (May 30, 2024) · 36.27 ft (April 24, 2023) · 37.47 ft (April 27, 2022)
Up and down the river, and nearby
- UpstreamRed River of the North at Grand Forks, ND
- DownstreamRed River of the North at Drayton, ND
- Forest River at Minto, ND
- Middle River at Argyle, MN
- Snake River (NW MN) above Warren, MN
- Park River at Grafton, ND
- Park River at Park River Diversion at Grafton, ND
- Turtle River at Turtle River State Park near Arvilla, ND
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (OSLM5); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.