Gallatin River at Logan, MT
River level and flood forecast · Gallatin County
Normal5.0 ftas of Mon 12 PM
The river is 4.0 ft below flood stage (9 ft).
Flow: 647 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 | 11 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 9 ft |
| Action stage | 8 ft |
| Record crest (February 5, 1963) | 11.88 ft |
What floods at each level
From the National Weather Service, highest first.
- 9.9 ftWater into USGS gage house.
- 8.8 ftWater may be on small bridges and around railroad bridge footing.
- 8.7 ftFebruary 2019...Ice Jam. Water level near 8.7 feet. Water flooding farm field next to river.
- 8.3 ftMinor lowland flooding near Logan.
- 8.1 ftLowland flooding occurs. Water may cross some smaller roads.
Highest crests on record
- 11.88 ft — February 5, 1963
- 11.85 ft — February 17, 1969
- 10.87 ft — February 28, 2019
- 10.63 ft — January 29, 1975
- 10.32 ft — January 1, 1980
Recent crests: 9.75 ft (June 14, 2022) · 10.87 ft (February 28, 2019) · 8.7 ft (February 10, 2019) · 9.15 ft (June 2, 2018) · 8.87 ft (May 29, 2014)
Up and down the river, and nearby
- UpstreamGallatin River near Gallatin Gateway, MT
- DownstreamMissouri River at Toston, MT
- Jefferson River near Three Forks, MT
- Willow Creek (Southwest MT) near Harrison, MT
- East Gallatin River near abv Water Recl Fac nr Bozeman, MT
- Hyalite Creek near S 19th near Gallatin Gateway, MT
- Madison River below Ennis Lake near McAllister, MT
- Madison River above Powerplant near McAllister, MT
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (LOGM8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.