Major Flood
17 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
16 ft
Minor Flood
10 ft
Action Stage
9.5 ft
What Floods at Each Level
10 ft
Flooding to low lying areas adjacent to the river is possible.
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 |
|---|---|---|
| Feb 9, 1996 | 16 ft | — |
| Jun 3, 1953 | 11.65 ft | — |
| May 10, 2018 | 11.09 ft | 18,800 cfs |
About This Gauge
USGS Site
NWS LID
BONM8
River
Blackfoot River
County
Missoula, MT
Coordinates
46.8997°N, 113.7556°W
Get Flood Alerts for Blackfoot 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 Blackfoot River near Bonner?
The Blackfoot River near Bonner gauge is maintained by USGS (site 12340000) 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 Blackfoot River near Bonner?
The NWS-defined flood stage for Blackfoot River near Bonner is 10 feet. Action stage begins at 9.5 feet. Moderate flooding starts at 16 feet, and major flooding at 17 feet.
How do I get alerts when Blackfoot River rises?
Download StormCast free on Google Play, go to River Gauges, and add Blackfoot River near Bonner 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 Blackfoot River near Bonner gauge located?
The gauge is located in Missoula County, Montana at coordinates 46.8997°N, 113.7556°W. USGS site number: 12340000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey