Major Flood
38 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
36 ft
Minor Flood
33 ft
Action Stage
23.3 ft
What Floods at Each Level
55 ft
This was the st. Patricks day flood of 1936. This crest occurred before flood control projects were in place at numerous locations upstream.
40.5 ft
Lock walls overtopped.
37 ft
Navigation suspended, lock out of service.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Mar 17, 1936 | 55 ft | — |
| Dec 30, 1942 | 47.9 ft | — |
| Jun 23, 1972 | 43.1 ft | — |
About This Gauge
Get Flood Alerts for Ohio River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Ohio River at Montgomery Lock and Dam?
The Ohio River at Montgomery Lock and Dam gauge is maintained by USGS (site 03108500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Ohio River at Montgomery Lock and Dam?
The NWS-defined flood stage for Ohio River at Montgomery Lock and Dam is 33 feet. Action stage begins at 23.3 feet. Moderate flooding starts at 36 feet, and major flooding at 38 feet.
How do I get alerts when Ohio River rises?
Download StormCast free on Google Play, go to River Gauges, and add Ohio River at Montgomery Lock and Dam to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Ohio River at Montgomery Lock and Dam gauge located?
The gauge is located in Beaver County, Pennsylvania at coordinates 40.6472°N, 80.3889°W. USGS site number: 03108500. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers
- 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.