Rivers in Pennsylvania
Ohio River at Montgomery Lock and Dam
Below flood stage
13.32ftStage
Observed Mon, Sep 28, 2:45 PM EDT
- Flood stage
- 33.00 ft
- Forecast crest
- 13.40 ftTue, Sep 29, 2:00 AM EDT
- Record crest
- 55.00 ft1936
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 38.00 ft |
| Moderate flood | 36.00 ft |
| Minor flood | 33.00 ft |
| Action | 23.30 ft |
- 55.00 ftThis was the st. Patricks day flood of 1936. This crest occurred before flood control projects were in place at numerous locations upstream.
- 40.50 ftLock walls overtopped.
- 37.00 ftNavigation suspended, lock out of service.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 6% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 22, 2026.
Crest history
57 crests on NOAA’s list since 1936.
| # | Date | Stage |
|---|---|---|
| 1 | March 18, 1936 | 55.00 ft |
| 2 | December 31, 1942 | 47.90 ft |
| 3 | June 24, 1972 | 43.10 ft |
| 4 | January 19, 1996 | 43.00 ft |
| 5 | October 17, 1954 | 43.00 ft |
| 6 | March 11, 1966 | 42.00 ft |
| 7 | March 11, 1964 | 42.00 ft |
| 8 | January 23, 1959 | 41.30 ft |
| 9 | September 19, 2004 | 41.00 ft |
| 10 | January 28, 1952 | 40.50 ft |
| 11 | December 5, 1950 | 37.70 ft |
| 12 | September 11, 2018 | 37.49 ft |
| 13 | January 7, 2005 | 36.90 ft |
| 14 | April 1, 1960 | 36.20 ft |
| 15 | April 4, 2024 | 36.00 ft |
| 16 | April 4, 2024 | 35.97 ft |
| 17 | February 14, 1966 | 35.60 ft |
| 18 | March 31, 1964 | 34.30 ft |
| 19 | March 6, 1963 | 34.30 ft |
| 20 | September 11, 2018 | 33.85 ft |
| 21 | February 17, 2018 | 33.57 ft |
| 22 | March 21, 1963 | 33.30 ft |
| 23 | May 5, 1983 | 32.10 ft |
| 24 | February 26, 1979 | 31.90 ft |
| 25 | November 6, 1985 | 31.30 ft |
Most recent crests
- April 4, 2024: 36.00 ft
- April 4, 2024: 35.97 ft
- September 11, 2018: 37.49 ft
- September 11, 2018: 33.85 ft
- February 17, 2018: 33.57 ft
- March 24, 2007: 24.20 ft
- March 16, 2007: 28.30 ft
- January 7, 2005: 36.90 ft
- September 19, 2004: 41.00 ft
- September 10, 2004: 27.80 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Ohio River Forecast Center. Forecasts are issued routinely year-round. The above river forecast includes future rainfall/snowmelt. Forecast stages may be different if the actual rainfall/snowmelt is different than the forecast rainfall/snowmelt. Stage may be affected by 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.