Rivers in Montana
Boulder River at Big Timber
Below flood stage
1.11ftStage
Observed Mon, Sep 21, 10:00 PM MDT
- Flood stage
- 8.00 ft
- Record crest
- 9.00 ft1997
Flood stages and impacts
| Category | Stage |
|---|---|
| Minor flood | 8.00 ft |
- 7.50 ftMinor flooding along the south bank.
Flood outlook
Chance of flooding, September to November
| 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 August 26, 2026.
Crest history
78 crests on NOAA’s list since 1947.
| # | Date | Stage |
|---|---|---|
| 1 | June 5, 1997 | 9.00 ft |
| 2 | June 13, 2022 | 8.56 ft |
| 3 | June 1, 2020 | 8.33 ft |
| 4 | July 8, 1975 | 8.25 ft |
| 5 | June 30, 2011 | 8.04 ft |
| 6 | July 5, 1975 | 7.89 ft |
| 7 | June 18, 1974 | 7.87 ft |
| 8 | May 28, 1956 | 7.84 ft |
| 9 | May 29, 2014 | 7.71 ft |
| 10 | June 15, 1959 | 7.68 ft |
| 11 | May 27, 2018 | 7.64 ft |
| 12 | June 7, 2019 | 7.60 ft |
| 13 | June 12, 1991 | 7.60 ft |
| 14 | June 23, 1971 | 7.60 ft |
| 15 | June 27, 1970 | 7.58 ft |
| 16 | June 16, 1965 | 7.51 ft |
| 17 | June 28, 1964 | 7.50 ft |
| 18 | June 10, 1996 | 7.47 ft |
| 19 | June 29, 1982 | 7.44 ft |
| 20 | June 6, 2021 | 7.44 ft |
| 21 | June 20, 1968 | 7.43 ft |
| 22 | June 10, 1978 | 7.39 ft |
| 23 | June 5, 1948 | 7.37 ft |
| 24 | June 6, 2017 | 7.26 ft |
| 25 | June 2, 2015 | 7.17 ft |
Most recent crests
- June 11, 2024: 6.74 ft
- June 3, 2023: 5.97 ft
- June 13, 2022: 8.56 ft
- June 6, 2021: 7.44 ft
- June 1, 2020: 8.33 ft
- June 7, 2019: 7.60 ft
- May 27, 2018: 7.64 ft
- June 6, 2017: 7.26 ft
- June 10, 2016: 6.74 ft
- June 2, 2015: 7.17 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. Stage may be affected by ice during winter months. River forecasts will be issued for this location when the water level reaches 1.5 feet from flood stage.
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.