Rivers in Montana
Sun River near Vaughn
Below flood stage
2.60ftStage
Observed Tue, Sep 22, 9:00 AM MDT
- Flood stage
- 6.00 ft
- Record crest
- 23.40 ft1964
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 9.00 ft |
| Moderate flood | 8.00 ft |
| Minor flood | 6.00 ft |
| Action | 5.00 ft |
- 24.00 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.
- 22.00 ftStage at old gage site. Extensive flooding in great falls west side. Great falls country club flooded before the levee was built.
- 17.00 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.
- 15.00 ftCurrent gage site. Stage estimated. Extensive flooding in great falls west side. Great falls country club flooded before the levee was built.
- 13.00 ftStage at old gage site. Lower lying agricultural areas flood.
- 9.60 ftAt 9.6 4 Feet - June 21 2018 Flooding around Vaughn.
- 6.00 ftCurrent gage site. Lower lying agricultural areas flood.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 26, 2026.
Crest history
90 crests on NOAA’s list since 1934.
| # | Date | Stage |
|---|---|---|
| 1 | June 9, 1964 | 23.40 ft |
| 2 | June 20, 1975 | 22.28 ft |
| 3 | June 4, 1953 | 16.38 ft |
| 4 | May 24, 1981 | 15.45 ft |
| 5 | March 19, 1969 | 13.66 ft |
| 6 | June 6, 1948 | 13.48 ft |
| 7 | March 11, 1989 | 12.77 ft |
| 8 | March 17, 1978 | 12.42 ft |
| 9 | June 19, 1967 | 11.80 ft |
| 10 | June 13, 1997 | 11.45 ft |
| 11 | May 15, 1976 | 11.41 ft |
| 12 | June 13, 1958 | 10.92 ft |
| 13 | May 22, 1991 | 10.55 ft |
| 14 | June 16, 1943 | 10.48 ft |
| 15 | May 22, 1957 | 10.33 ft |
| 16 | May 27, 1980 | 10.14 ft |
| 17 | May 27, 1962 | 9.99 ft |
| 18 | June 21, 2018 | 9.64 ft |
| 19 | June 21, 2018 | 9.64 ft |
| 20 | June 24, 1938 | 9.56 ft |
| 21 | June 18, 1950 | 9.50 ft |
| 22 | June 8, 1934 | 9.50 ft |
| 23 | May 22, 1954 | 9.15 ft |
| 24 | June 18, 1982 | 9.07 ft |
| 25 | June 7, 1995 | 9.05 ft |
Most recent crests
- May 28, 2019: 6.66 ft
- June 21, 2018: 9.64 ft
- June 21, 2018: 9.64 ft
- May 13, 2018: 5.64 ft
- June 7, 2012: 5.43 ft
- June 10, 2011: 8.29 ft
- June 18, 2010: 3.95 ft
- June 2, 2009: 4.58 ft
- May 27, 2008: 5.81 ft
- May 21, 2007: 3.61 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued routinely during the warm season, and as needed at other times of the year. Stage may be affected by ice during winter months.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.