Major Flood
9 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
8.5 ft
Minor Flood
8 ft
Action Stage
7 ft
What Floods at Each Level
8.5 ft
County roads and bridges have water flowing over them. Several homes flood.May 2018 - Old Town Road just north of Three Forks begins to flood. Road had to be closed.
8 ft
Farm buildings flood around Three Forks.Also monitor Boulder River. When Boulder River (BLDM8) starts to go above 8.0 feet, this can have an effect on rise/lowering of the Jefferson River near Three Forks. (June 2017)
7.5 ft
At 7.5 Feet...Agricultural land floods near Three Forks.
7.3 ft
At 7.3 Feet...Water starts to come out of its bank on the Jefferson River near Silver Star and Waterloo in Madison County. The water is near the foundations of several homes. Waterloo Road and Riverside Drive have water on them. An areal flood advisory is recommended from north of Twin Bridges to north of Waterloo. Look at staff gage PBRM8 for data. (June 2017). PBR only available from July thru September starting in 2018.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jan 2, 1997 | 9.88 ft | — |
| Dec 9, 1980 | 9.39 ft | — |
| Jun 11, 2011 | 9.38 ft | 17,400 cfs |
About This Gauge
USGS Site
NWS LID
TFKM8
River
Jefferson River
County
Broadwater, MT
Coordinates
45.8978°N, 111.5958°W
Get Flood Alerts for Jefferson River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Jefferson River near Three Forks?
The Jefferson River near Three Forks gauge is maintained by USGS (site 06036650) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Jefferson River near Three Forks?
The NWS-defined flood stage for Jefferson River near Three Forks is 8 feet. Action stage begins at 7 feet. Moderate flooding starts at 8.5 feet, and major flooding at 9 feet.
How do I get alerts when Jefferson River rises?
Download StormCast free on Google Play, go to River Gauges, and add Jefferson River near Three Forks to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Jefferson River near Three Forks gauge located?
The gauge is located in Broadwater County, Montana at coordinates 45.8978°N, 111.5958°W. USGS site number: 06036650. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Jefferson River
On This River
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice during winter months.