Gallatin River near Gallatin Gateway
Observed Wed, Sep 30, 3:00 AM MDT
- Flood stage
- 6.00 ft
- Record crest
- 7.38 ft1974
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 7.50 ft |
| Moderate flood | 7.00 ft |
| Minor flood | 6.00 ft |
| Action | 5.00 ft |
- 7.20 ftSmall bridge near gallatin gateway and a few homes west of town are beginning to flood.
- 7.10 ftWater flows over road connecting two bridges over gallatin river. Three forest service campgrounds flood, including the one at squaw creek.
- 7.00 ftMinor roads in gallatin gateway covered with water.
- 6.30 ftWater flows over the axtell and irwin bridges.
- 6.10 ftFlooding of the lowlands along the gallatin river.
- 6.00 ftWater flows over roads as well as several smalller bridges. Several forest service campgrounds as well as some home west of town begin to flood.
- 5.00 ftGallatin river on west side of gallatin gateway can come out of banks at mill road near where the road crosses the river. Water may work into area yards and fields, and may encroach onto mill road.
Flood outlook
Chance of flooding, October to December
| 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 September 23, 2026.
Crest history
79 crests on NOAA’s list since 1933.
| # | Date | Stage |
|---|---|---|
| 1 | June 17, 1974 | 7.38 ft |
| 2 | June 2, 1997 | 6.71 ft |
| 3 | June 13, 2022 | 6.70 ft |
| 4 | June 30, 2011 | 6.51 ft |
| 5 | June 6, 1991 | 6.50 ft |
| 6 | June 27, 1971 | 6.49 ft |
| 7 | June 9, 1970 | 6.48 ft |
| 8 | June 6, 1995 | 6.31 ft |
| 9 | July 4, 1975 | 6.27 ft |
| 10 | June 15, 1959 | 6.23 ft |
| 11 | June 11, 1996 | 6.11 ft |
| 12 | June 13, 1965 | 6.02 ft |
| 13 | June 6, 1986 | 6.00 ft |
| 14 | June 4, 1948 | 5.77 ft |
| 15 | June 6, 1952 | 5.71 ft |
| 16 | May 30, 2003 | 5.71 ft |
| 17 | June 8, 1964 | 5.70 ft |
| 18 | June 1, 2018 | 5.65 ft |
| 19 | June 19, 1943 | 5.61 ft |
| 20 | June 7, 1957 | 5.59 ft |
| 21 | May 28, 1956 | 5.57 ft |
| 22 | June 9, 1981 | 5.56 ft |
| 23 | June 20, 1968 | 5.56 ft |
| 24 | June 23, 2008 | 5.54 ft |
| 25 | June 22, 1967 | 5.44 ft |
Most recent crests
- June 13, 2022: 6.70 ft
- June 1, 2018: 5.65 ft
- June 5, 2012: 5.17 ft
- June 30, 2011: 6.51 ft
- June 5, 2010: 5.20 ft
- June 1, 2009: 5.28 ft
- June 23, 2008: 5.54 ft
- May 14, 2007: 4.04 ft
- May 21, 2006: 5.17 ft
- June 23, 2005: 4.52 ft
Nearby
Upstream, downstream and the gauges around this one.
- DownstreamGallatin River at Logan
- Hyalite Creek at S 19th near Gallatin Gateway
- Gallatin River at Deer Creek near Big Sky
- Madison River at Ennis Lake near McAllister
- Madison River at Powerplant near McAllister
- East Gallatin River at Bridger Creek near Bozeman
- East Gallatin River at abv Water Recl Fac nr Bozeman
- East Gallatin River at Manhattan
- Willow Creek (Southwest MT) at Harrison
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. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 120 hours into the future from the forecast issuance time.
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.