Monongahela River at Charleroi Lock and Dam
Pennsylvania — Water Level & Flood Stage
Located in Westmoreland County, Pennsylvania on the Monongahela River. Live water level data from USGS gauge 03075000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
35 ft
Moderate Flood
31 ft
Minor Flood
28 ft
Action Stage
22.6 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
42.7 ft
Water reaches the flood of record...Election Day Flood event...November 5, 1985.
39.9 ft
Water reaches the level of the ST. Patricks Day Flood and crest on March 18, 1936.
37 ft
50 homes are flooded in Roscoe. Flooding also occurs in the towns of Elco, Allenport, and Stockdale.
36 ft
Several homes are flooded on Lynn Street in Roscoe.
35.9 ft
Water levels reach the flood levels of the flood of July 30, 2017.
35 ft
Backwater flooding in Monongahela along Pigeon Creek causes flood waters up to 4.5 feet in businesses in the lowest building in Penos Plaza and up to 6 feet in Armstrong Park. Backwater flooding spreads upstream along Pigeon Creek to the Route 43 overpass on Park Avenue.
34.1 ft
Division of American Chain and Cable Co. In Monessen floods.
33.15 ft
Water reaches the level reached on March 5, 2015.
33 ft
Flooding is widespread in Fayette City.
32 ft
Flooding occurs on Connellsville, Fourth, Cook, and Main Streets in Fayette City
31.6 ft
Lock walls overtopped.
30 ft
Backwater flooding along Pigeon Creek in Monongahela, begins to flood the lowest building in Penos Plaza, Armstrong Park, and closes Wall Street Bridge across Pigeon Creek.
29 ft
Navigation suspended, lock out of service.
28 ft
In Monongahela, backwater flooding along Pigeon Creek begins from the intersection of Park Way and Park Avenue.
26.3 ft
Water reaches the level reached during Hurricane Ivan September 18, 2004.
26 ft
Route 201 in closed due to flooding along Donner's Run.
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 |
|---|---|---|
| Nov 4, 1985 | 42.7 ft | — |
| Nov 4, 1985 | 42.7 ft | — |
| Mar 8, 1967 | 41.1 ft | — |
| Mar 8, 1967 | 41.1 ft | — |
| Mar 17, 1936 | 39.9 ft | — |
About This Gauge
USGS Site
NWS LID
CHRP1
River
Monongahela River
County
Westmoreland, PA
Coordinates
40.1494°N, 79.9017°W
Get Flood Alerts for Monongahela 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 Monongahela River at Charleroi Lock and Dam?
The Monongahela River at Charleroi Lock and Dam gauge is maintained by USGS (site 03075000) 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 Monongahela River at Charleroi Lock and Dam?
The NWS-defined flood stage for Monongahela River at Charleroi Lock and Dam is 28 feet. Action stage begins at 22.6 feet. Moderate flooding starts at 31 feet, and major flooding at 35 feet.
How do I get alerts when Monongahela River rises?
Download StormCast free on Google Play, go to River Gauges, and add Monongahela River at Charleroi 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 — even when your screen is off.
Where is the Monongahela River at Charleroi Lock and Dam gauge located?
The gauge is located in Westmoreland County, Pennsylvania at coordinates 40.1494°N, 79.9017°W. USGS site number: 03075000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: 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.