Thompson River near Thompson Falls
Montana — Water Level & Flood Stage
Located in Sanders County, Montana on the Thompson River. Live water level data from USGS gauge 12389500, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Minor Flood
7 ft
Action Stage
6.5 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
9 ft
Flooding affects low lying areas adjacent to the river. Homes in the community of Snider experience flooding and several roads in the community become inundated.
7 ft
Flooding affects low lying areas adjacent to the river. Flooding also affects homes in the community of Snider.
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 8, 1964 | 8.53 ft | 6,080 cfs |
| Jun 8, 1964 | 8.53 ft | 6,080 cfs |
| May 16, 1997 | 8.35 ft | 5,360 cfs |
| May 16, 1997 | 8.35 ft | 5,360 cfs |
| May 18, 2008 | 7.84 ft | 4,820 cfs |
About This Gauge
USGS Site
NWS LID
THRM8
River
Thompson River
County
Sanders, MT
Coordinates
47.5919°N, 115.2286°W
Get Flood Alerts for Thompson 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 Thompson River near Thompson Falls?
The Thompson River near Thompson Falls gauge is maintained by USGS (site 12389500) 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 Thompson River near Thompson Falls?
The NWS-defined flood stage for Thompson River near Thompson Falls is 7 feet. Action stage begins at 6.5 feet. Moderate flooding starts at N/A feet, and major flooding at N/A feet.
How do I get alerts when Thompson River rises?
Download StormCast free on Google Play, go to River Gauges, and add Thompson River near Thompson Falls to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Thompson River near Thompson Falls gauge located?
The gauge is located in Sanders County, Montana at coordinates 47.5919°N, 115.2286°W. USGS site number: 12389500. 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