Clark Fork River at St. Regis, MT
River level and flood forecast · Mineral County
The river is 13.5 ft below flood stage (19 ft).
Forecast to hold near 5.5 ft through Tue, Oct 20, 12 PM.
Flow: 2,940 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Tue, Oct 13, 9:06 AM. Forecasts change as rain falls and as upstream water arrives.
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An email when the National Weather Service forecasts Clark Fork River at St. Regis to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 22 ft |
| Moderate flood stage | 21 ft |
| Flood stage | 19 ft |
| Action stage | 18 ft |
| Record crest (May 18, 1997) | 20.27 ft |
What floods at each level
From the National Weather Service, highest first.
- 22 ftFlooding affects buildings in the town of St. Regis inundating roads and isolating homes.
- 21 ftFlooding affects low lying areas adjacent to the confluence of the Clark Fork and St. Regis Rivers.
- 19 ftFlooding affects low lying areas adjacent to the river.
Highest crests on record
- 20.27 ft — May 18, 1997
- 19.96 ft — May 24, 1948
- 19.5 ft — June 3, 1972
- 19.39 ft — June 18, 1974
- 19.2 ft — May 30, 1913
Recent crests: 11.51 ft (May 12, 2025) · 15.06 ft (June 13, 2022) · 14.26 ft (June 6, 2021) · 16.33 ft (May 22, 2020) · 16.17 ft (May 19, 2019)
Up and down the river, and nearby
- UpstreamClark Fork River below Missoula, MT
- DownstreamClark Fork River near Plains, MT
- St. Regis River near St. Regis, MT
- St Joe River at Red Ives Ranger Station, ID
- Thompson River near Thompson Falls, MT
- Prospect Creek at Thompson Falls, MT
- Flathead River at Perma, MT
- Canyon Creek at Wallace, ID
- Ninemile Creek near Wallace, ID
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SRGM8); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.