Ohio River at Montgomery Lock and Dam, PA
River level and flood forecast · Beaver County
Normal13.7 ftas of Mon 4:45 PM
The river is 19.3 ft below flood stage (33 ft).
Forecast to rise to 14.3 ft Mon 2 PM, below the 33 ft flood stage.
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 10:12 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 38 ft |
| Moderate flood stage | 36 ft |
| Flood stage | 33 ft |
| Action stage | 23.3 ft |
| Record crest (March 18, 1936) | 55 ft |
What floods at each level
From the National Weather Service, highest first.
- 55 ftThis was the st. Patricks day flood of 1936. This crest occurred before flood control projects were in place at numerous locations upstream.
- 40.5 ftLock walls overtopped.
- 37 ftNavigation suspended, lock out of service.
Highest crests on record
- 55 ft — March 18, 1936
- 47.9 ft — December 31, 1942
- 43.1 ft — June 24, 1972
- 43 ft — January 19, 1996
- 43 ft — October 17, 1954
Recent crests: 36 ft (April 4, 2024) · 35.97 ft (April 4, 2024) · 37.49 ft (September 11, 2018) · 33.85 ft (September 11, 2018) · 33.57 ft (February 17, 2018)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MGYP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.