Rivers in Montana
Clark Fork River at St. Regis
Below flood stage
5.40ftStage
Observed Thu, Oct 1, 10:45 AM MDT
- Flood stage
- 19.00 ft
- Forecast crest
- 5.39 ftThu, Oct 1, 12:00 PM MDT
- Record crest
- 20.27 ft1997
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 22.00 ft |
| Moderate flood | 21.00 ft |
| Minor flood | 19.00 ft |
| Action | 18.00 ft |
- 22.00 ftFlooding affects buildings in the town of St. Regis inundating roads and isolating homes.
- 21.00 ftFlooding affects low lying areas adjacent to the confluence of the Clark Fork and St. Regis Rivers.
- 19.00 ftFlooding affects low lying areas adjacent to the river.
Flood outlook
Chance of flooding, October to December
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 30, 2026.
Crest history
19 crests on NOAA’s list since 1913.
| # | Date | Stage |
|---|---|---|
| 1 | May 18, 1997 | 20.27 ft |
| 2 | May 24, 1948 | 19.96 ft |
| 3 | June 3, 1972 | 19.50 ft |
| 4 | June 18, 1974 | 19.39 ft |
| 5 | May 30, 1913 | 19.20 ft |
| 6 | May 24, 1956 | 18.98 ft |
| 7 | May 12, 2018 | 18.90 ft |
| 8 | June 10, 1964 | 18.54 ft |
| 9 | May 29, 1917 | 18.50 ft |
| 10 | June 21, 1975 | 18.21 ft |
| 11 | June 10, 2011 | 18.16 ft |
| 12 | May 16, 1976 | 18.07 ft |
| 13 | May 10, 1947 | 17.91 ft |
| 14 | June 19, 1950 | 17.39 ft |
| 15 | May 22, 2020 | 16.33 ft |
| 16 | May 19, 2019 | 16.17 ft |
| 17 | June 13, 2022 | 15.06 ft |
| 18 | June 6, 2021 | 14.26 ft |
| 19 | May 12, 2025 | 11.51 ft |
Most recent crests
- May 12, 2025: 11.51 ft
- June 13, 2022: 15.06 ft
- June 6, 2021: 14.26 ft
- May 22, 2020: 16.33 ft
- May 19, 2019: 16.17 ft
- May 12, 2018: 18.90 ft
- June 10, 2011: 18.16 ft
- May 18, 1997: 20.27 ft
- May 16, 1976: 18.07 ft
- June 21, 1975: 18.21 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Northwest River Forecast Center. Forecasts are issued routinely year-round.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.