Action Stage
3800 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: CYNM8). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
3800 ft
At 3800 Feet...Canyon Ferry Reservoir would start to flood. (June 2017)
3797 ft
At 3797 Feet...Canyon Ferry Reservoir is full. It becomes a pass thru. (June 2017)
3782 ft
Per Bureau of Reclamation, water levels below 3782 feet make lauching of a boat too low to safely launch a boat at Silos South Ramp boat launch location. (April 2018)
3781 ft
Per Bureau of Reclamation, water levels below 3781 feet make lauching of a boat too low to safely launch a boat at White Earth boat launch location. (April 2018)
3780 ft
Per Bureau of Reclamation, water levels below 3780 feet make lauching of a boat too low to safely launch a boat at Silos North Ramp and Kims Marina launch locations. (April 2018)
3777 ft
Per Bureau of Reclamation, water levels below 3777 feet make lauching of a boat too low to safely launch a boat at Yacht Basin Ramp location. (April 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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About This Gauge
NWS LID
CYNM8
River
Missouri River
County
Lewis and Clark, MT
Coordinates
46.6492°N, 111.7275°W
Get Flood Alerts for Missouri 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 Missouri River at Canyon Ferry Reservoir?
The Missouri River at Canyon Ferry Reservoir gauge is maintained by USGS 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 Missouri River at Canyon Ferry Reservoir?
This gauge has NWS-defined flood categories. Check the flood stages section above for current thresholds.
How do I get alerts when Missouri River rises?
Download StormCast free on Google Play, go to River Gauges, and add Missouri River at Canyon Ferry Reservoir 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 Missouri River at Canyon Ferry Reservoir gauge located?
The gauge is located in Lewis and Clark County, Montana at coordinates 46.6492°N, 111.7275°W. Data is provided by the U.S. Geological Survey and the National Weather Service.