Rivers in Montana
St. Regis River near St. Regis
Below flood stage
1.74ftStage
Observed Tue, Sep 22, 1:00 PM MDT
- Flood stage
- 8.00 ft
- Forecast crest
- 1.82 ftSat, Sep 26, 12:00 AM MDT
- Record crest
- 14.90 ft1933
Flood stages and impacts
| Category | Stage |
|---|---|
| Minor flood | 8.00 ft |
| Action | 7.50 ft |
- 12.00 ftFlooding impacts much of the town of St. Regis especially those buildings closer to the confluence of the St. Regis and Clark Fork Rivers.
- 10.00 ftFlood affects many buildings and roads near the town of St. Regis.
- 9.00 ftFlooding affects low lying areas adjacent to the river. Minor flooding near the town of St. Regis and several roads in the area may also be flooded.
- 8.00 ftSome flooding occurrs at the I-90 freeway exit upstream of the town of St. Regis.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | -99900% |
| Major flooding | -99900% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 22, 2026.
Crest history
26 crests on NOAA’s list since 1911.
| # | Date | Stage |
|---|---|---|
| 1 | December 20, 1933 | 14.90 ft |
| 2 | May 19, 1954 | 9.40 ft |
| 3 | May 28, 1917 | 8.65 ft |
| 4 | February 9, 1996 | 8.26 ft |
| 5 | March 19, 2017 | 8.16 ft |
| 6 | May 18, 2008 | 7.80 ft |
| 7 | May 17, 1997 | 7.80 ft |
| 8 | May 28, 1913 | 7.70 ft |
| 9 | November 30, 1995 | 7.64 ft |
| 10 | April 25, 2012 | 7.53 ft |
| 11 | May 7, 1916 | 7.50 ft |
| 12 | April 15, 2002 | 7.49 ft |
| 13 | January 16, 1974 | 7.38 ft |
| 14 | December 11, 2025 | 7.26 ft |
| 15 | May 16, 2011 | 7.20 ft |
| 16 | May 7, 2018 | 6.99 ft |
| 17 | May 13, 1971 | 6.67 ft |
| 18 | May 23, 1967 | 6.52 ft |
| 19 | April 21, 1965 | 6.46 ft |
| 20 | June 1, 1972 | 6.44 ft |
| 21 | May 7, 2022 | 6.27 ft |
| 22 | April 25, 1911 | 6.16 ft |
| 23 | June 8, 1964 | 6.16 ft |
| 24 | May 31, 2020 | 5.26 ft |
| 25 | May 18, 2021 | 4.86 ft |
Most recent crests
- December 11, 2025: 7.26 ft
- May 4, 2025: 4.72 ft
- May 7, 2022: 6.27 ft
- May 18, 2021: 4.86 ft
- May 31, 2020: 5.26 ft
- May 7, 2018: 6.99 ft
- March 19, 2017: 8.16 ft
- April 25, 2012: 7.53 ft
- May 16, 2011: 7.20 ft
- May 18, 2008: 7.80 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.