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 ft
Minor Flood
7.5 ft
Action Stage
6.5 ft
What Floods at Each Level
8.5 ft
A petroleum gas pipeline becomes exposed underneath the creek due to high flood flows.
8.19 ft
Homes along Prospect Creek become surrounded with water from Prospect Creek.
8.1 ft
Water begins flowing across Prospect Creek Road.
7.5 ft
Road washouts are possible along Prospect Creek Road.
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 15, 1974 | 9.86 ft | 5,490 cfs |
| Feb 8, 1996 | 9.54 ft | 5,160 cfs |
| Mar 18, 2017 | 8.1 ft | 3,640 cfs |
About This Gauge
USGS Site
NWS LID
PRCM8
River
Prospect Creek
County
Sanders, MT
Coordinates
47.5861°N, 115.3542°W
Get Flood Alerts for Prospect Creek
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 Prospect Creek at Thompson Falls?
The Prospect Creek at Thompson Falls gauge is maintained by USGS (site 12390700) 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 Prospect Creek at Thompson Falls?
The NWS-defined flood stage for Prospect Creek at Thompson Falls is 7.5 feet. Action stage begins at 6.5 feet. Moderate flooding starts at 8 feet, and major flooding at 9 feet.
How do I get alerts when Prospect Creek rises?
Download StormCast free on Google Play, go to River Gauges, and add Prospect Creek at 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.
Where is the Prospect Creek at Thompson Falls gauge located?
The gauge is located in Sanders County, Montana at coordinates 47.5861°N, 115.3542°W. USGS site number: 12390700. 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