Gallatin River near Gallatin Gateway, MT
River level and flood forecast · Gallatin County
Normal1.5 ftas of Mon 1 PM
The river is 4.5 ft below flood stage (6 ft).
Flow: 430 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 | 7.5 ft |
| Moderate flood stage | 7 ft |
| Flood stage | 6 ft |
| Action stage | 5 ft |
| Record crest (June 17, 1974) | 7.38 ft |
What floods at each level
From the National Weather Service, highest first.
- 7.2 ftSmall bridge near gallatin gateway and a few homes west of town are beginning to flood.
- 7.1 ftWater flows over road connecting two bridges over gallatin river. Three forest service campgrounds flood, including the one at squaw creek.
- 7 ftMinor roads in gallatin gateway covered with water.
- 6.3 ftWater flows over the axtell and irwin bridges.
- 6.1 ftFlooding of the lowlands along the gallatin river.
- 6 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 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.
Highest crests on record
- 7.38 ft — June 17, 1974
- 6.71 ft — June 2, 1997
- 6.7 ft — June 13, 2022
- 6.51 ft — June 30, 2011
- 6.5 ft — June 6, 1991
Recent crests: 6.7 ft (June 13, 2022) · 5.65 ft (June 1, 2018) · 5.17 ft (June 5, 2012) · 6.51 ft (June 30, 2011) · 5.2 ft (June 5, 2010)
Up and down the river, and nearby
- DownstreamGallatin River at Logan, MT
- Hyalite Creek near S 19th near Gallatin Gateway, MT
- Gallatin River above Deer Creek near Big Sky, MT
- Madison River above Powerplant near McAllister, MT
- Madison River below Ennis Lake near McAllister, MT
- East Gallatin River near abv Water Recl Fac nr Bozeman, MT
- Willow Creek (Southwest MT) near Harrison, MT
- Madison River near Cameron, MT
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (GLGM8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.