Missouri River at Toston, MT
River level and flood forecast · Broadwater County
Normal3.9 ftas of Mon 2 PM
The river is 6.6 ft below flood stage (10.5 ft).
Flow: 3,020 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 12 ft |
| Moderate flood stage | 11 ft |
| Flood stage | 10.5 ft |
| Action stage | 10 ft |
| Record crest (June 12, 1997) | 12.22 ft |
What floods at each level
From the National Weather Service, highest first.
- 11 ftWater floods low lying areas near Highway 287.
- 10 ftLow lying fields flood.
Highest crests on record
- 12.22 ft — June 12, 1997
- 11.77 ft — June 6, 1948
- 11.53 ft — June 15, 2011
- 11.32 ft — June 18, 1974
- 11.22 ft — June 11, 1996
Recent crests: 10.19 ft (June 15, 2022) · 11.08 ft (June 2, 2018) · 9.82 ft (May 30, 2014) · 6.48 ft (May 21, 2013) · 7.96 ft (June 6, 2012)
Up and down the river, and nearby
- UpstreamJefferson River near Three Forks, MT
- Gallatin River at Logan, MT
- Boulder River (Central MT) near Boulder, MT
- Willow Creek (Southwest MT) near Harrison, MT
- East Gallatin River near abv Water Recl Fac nr Bozeman, MT
- Prickly Pear Creek near Clancy, MT
- Hyalite Creek near S 19th near Gallatin Gateway, MT
- Shields River above Wilsall, MT
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (TOSM8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.