Sun River near Vaughn, MT
River level and flood forecast · Cascade County
Normal2.5 ftas of Mon 12 PM
The river is 3.5 ft below flood stage (6 ft).
Flow: 600 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 | 9 ft |
| Moderate flood stage | 8 ft |
| Flood stage | 6 ft |
| Action stage | 5 ft |
| Record crest (March 19, 1969) | 13.66 ft |
What floods at each level
From the National Weather Service, highest first.
- 24 ftStage at old gage site. Extensive flooding in great falls westside with most of the homes flooded. Country club was flooded before the levee was built.
- 22 ftStage at old gage site. Extensive flooding in great falls west side. Great falls country club flooded before the levee was built.
- 17 ftCurrent gage site. Stage estimated. Extensive flooding in great falls westside with most of the homes flooded. Country club was flooded before the levee was built.
- 15 ftCurrent gage site. Stage estimated. Extensive flooding in great falls west side. Great falls country club flooded before the levee was built.
- 13 ftStage at old gage site. Lower lying agricultural areas flood.
- 9.6 ftAt 9.6 4 Feet - June 21 2018 Flooding around Vaughn.
- 6 ftCurrent gage site. Lower lying agricultural areas flood.
Highest crests on record
- 13.66 ft — March 19, 1969
- 12.77 ft — March 11, 1989
- 12.42 ft — March 17, 1978
- 11.8 ft — June 19, 1967
- 11.45 ft — June 13, 1997
Recent crests: 6.66 ft (May 28, 2019) · 9.64 ft (June 21, 2018) · 9.64 ft (June 21, 2018) · 5.64 ft (May 13, 2018) · 5.43 ft (June 7, 2012)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (VAUM8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.