Rivers in Maine
St. John River at Dickey
Below flood stage
3.53ftStage
Observed Mon, Sep 21, 11:45 PM EDT
- Flood stage
- 25.00 ft
- Forecast crest
- 3.50 ftTue, Sep 22, 2:00 AM EDT
- Record crest
- 37.89 ft1991
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 35.00 ft |
| Moderate flood | 30.00 ft |
| Minor flood | 25.00 ft |
| Action | 23.50 ft |
- 35.00 ftWidespread catastrophic flooding of State Route 161 between Dickey Bridge and St. Francis. Numerous homes inundated from Big Rapids downstream to St. Francis. Significant inundation of structures in Allagash with combined backwater flooding from the Allagash River. Most campsites between Longs Rapids and Big Rapids inaccessible.
- 30.00 ftFlooding along State Route 161 near the Allagash Maine Forest Service Ranger Station due to backwater issues with the Allagash River. Moderate flooding impacting Route 161 near the Allagash and St Francis town line. Significant flooding at campsites between Longs Rapids and Dickey Bridge.
- 25.00 ftMinor flooding of low lying properties from Longs Rapids downstream to St. Francis. Backwater issues begins to cause minor flooding along the Little Black River near Walker Brook Road. Campsites between Castonia Farm to Poplar Island experience minor flooding.
- 23.50 ftRiver nearing bankfull and begins to threaten low lying campsites from Castonia Rapids downstream to Dickey Bridge.
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 September 14, 2026.
Crest history
28 crests on NOAA’s list since 1953.
| # | Date | Stage |
|---|---|---|
| 1 | April 9, 1991 | 37.89 ft |
| 2 | April 30, 1974 | 29.16 ft |
| 3 | April 19, 2008 | 28.93 ft |
| 4 | April 17, 1984 | 26.56 ft |
| 5 | April 23, 2007 | 24.29 ft |
| 6 | April 15, 1994 | 23.81 ft |
| 7 | April 22, 1970 | 23.44 ft |
| 8 | March 11, 1979 | 23.40 ft |
| 9 | April 18, 1983 | 21.97 ft |
| 10 | April 2, 1976 | 21.88 ft |
| 11 | February 24, 1981 | 21.71 ft |
| 12 | February 24, 1996 | 21.18 ft |
| 13 | April 16, 2019 | 20.55 ft |
| 14 | April 30, 2008 | 20.16 ft |
| 15 | April 11, 1963 | 20.11 ft |
| 16 | April 21, 1995 | 20.05 ft |
| 17 | March 29, 1953 | 19.88 ft |
| 18 | April 1, 1986 | 19.57 ft |
| 19 | April 23, 2019 | 19.43 ft |
| 20 | April 29, 1979 | 19.13 ft |
| 21 | April 3, 1977 | 19.03 ft |
| 22 | April 13, 1968 | 18.72 ft |
| 23 | April 19, 1983 | 18.52 ft |
| 24 | March 19, 1990 | 18.06 ft |
| 25 | April 2, 1987 | 18.01 ft |
Most recent crests
- March 24, 2025: 11.19 ft
- April 14, 2024: 13.83 ft
- April 23, 2019: 19.43 ft
- April 16, 2019: 20.55 ft
- April 30, 2008: 20.16 ft
- April 19, 2008: 28.93 ft
- April 23, 2007: 24.29 ft
- April 25, 1996: 16.09 ft
- February 24, 1996: 21.18 ft
- April 21, 1995: 20.05 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Northeast River Forecast Center. Forecasts are issued routinely year-round. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice. Gauge reading may be affected by ice. Forecast flows are unadjusted for ice.
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.