Moderate Flood
11 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.
Minor Flood
10 ft
Action Stage
9 ft
What Floods at Each Level
11 ft
Lower sections of downstream parking lot may be under water. Flagg Ranch campgrounds still not affected.
10.75 ft
Record stage and flow---15,000 cfs (6/5/1996).
10 ft
Flood stage. Minor flooding along lower sections of parking lot 300 feet downstream of gage on right bank.
9 ft
Bankfull stage.
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 |
|---|---|---|
| Jun 4, 1996 | 10.75 ft | 15,000 cfs |
| Jun 4, 1997 | 10.16 ft | 14,500 cfs |
| Jun 5, 1986 | 9.41 ft | 10,600 cfs |
About This Gauge
Get Flood Alerts for Snake 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 Snake River at Flagg Ranch?
The Snake River at Flagg Ranch gauge is maintained by USGS (site 13010065) 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 Snake River at Flagg Ranch?
The NWS-defined flood stage for Snake River at Flagg Ranch is 10 feet. Action stage begins at 9 feet. Moderate flooding starts at 11 feet, and major flooding at N/A feet.
How do I get alerts when Snake River rises?
Download StormCast free on Google Play, go to River Gauges, and add Snake River at Flagg Ranch 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 Snake River at Flagg Ranch gauge located?
The gauge is located in Teton County, Wyoming at coordinates 44.0990°N, 110.6675°W. USGS site number: 13010065. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Snake River
On This River
Downstream: Snake River below Jackson Dam
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey