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Over 200 USGS real-time streamgages used to support NWS river forecasts and warnings are at risk of being discontinued. Click here for more information from the USGS...


NOTE: Gauge readings may be delayed or temporarily unavailable due to satellite communication issues.
Weather Forecast Office Pittsburgh, PA Ohio River Forecast Center
Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Monongahela River at Charleroi Lock and Dam Tailwater (ft)Flow (kcfs)Observed: 11.9 ft at 11:00PM May 20, 2013Observed: 11.9 ft at 12:00AM May 21, 2013Observed: 12 ft at 1:00AM May 21, 2013Observed: 11.8 ft at 2:00AM May 21, 2013Observed: 11.7 ft at 3:00AM May 21, 2013Observed: 11.5 ft at 4:00AM May 21, 2013Observed: 11.3 ft at 5:00AM May 21, 2013Observed: 11.3 ft at 6:00AM May 21, 2013Observed: 11.1 ft at 7:00AM May 21, 2013Observed: 11.1 ft at 8:00AM May 21, 2013Observed: 11 ft at 9:00AM May 21, 2013Observed: 10.9 ft at 10:00AM May 21, 2013Observed: 10.8 ft at 11:00AM May 21, 2013Observed: 10.8 ft at 12:00PM May 21, 2013Observed: 10.7 ft at 1:00PM May 21, 2013Observed: 10.7 ft at 2:00PM May 21, 2013Observed: 10.7 ft at 3:00PM May 21, 2013Observed: 10.8 ft at 4:00PM May 21, 2013Observed: 10.8 ft at 5:00PM May 21, 2013Observed: 11 ft at 6:00PM May 21, 2013Observed: 11 ft at 7:00PM May 21, 2013Observed: 11.2 ft at 8:00PM May 21, 2013Observed: 11.3 ft at 9:00PM May 21, 2013Observed: 11.4 ft at 10:00PM May 21, 2013Observed: 11.4 ft at 11:00PM May 21, 2013Observed: 11.6 ft at 12:00AM May 22, 2013Observed: 11.7 ft at 1:00AM May 22, 2013Observed: 11.7 ft at 2:00AM May 22, 2013Observed: 11.5 ft at 3:00AM May 22, 2013Observed: 11.5 ft at 4:00AM May 22, 2013Observed: 11.5 ft at 5:00AM May 22, 2013Observed: 11.5 ft at 6:00AM May 22, 2013Observed: 11.4 ft at 7:00AM May 22, 2013Observed: 11.3 ft at 8:00AM May 22, 2013Observed: 11.2 ft at 9:00AM May 22, 2013Observed: 11.2 ft at 10:00AM May 22, 2013Observed: 11.1 ft at 11:00AM May 22, 2013Observed: 11 ft at 12:00PM May 22, 2013Observed: 11 ft at 1:00PM May 22, 2013Observed: 10.9 ft at 2:00PM May 22, 2013Observed: 10.9 ft at 3:00PM May 22, 2013Observed: 10.8 ft at 4:00PM May 22, 2013Observed: 10.7 ft at 5:00PM May 22, 2013Observed: 10.6 ft at 6:00PM May 22, 2013Observed: 10.7 ft at 7:00PM May 22, 2013Observed: 10.7 ft at 7:45PM May 22, 2013Observed: 10.7 ft at 8:00PM May 22, 2013Observed: 10.8 ft at 9:00PM May 22, 2013Observed: 10.8 ft at 10:00PM May 22, 2013Observed: 10.8 ft at 11:00PM May 22, 2013Observed: 10.9 ft at 12:00AM May 23, 2013Observed: 10.9 ft at 1:00AM May 23, 2013Observed: 10.9 ft at 2:00AM May 23, 2013Observed: 11 ft at 3:00AM May 23, 2013Observed: 11 ft at 4:00AM May 23, 2013Observed: 10.9 ft at 5:00AM May 23, 2013Observed: 11.1 ft at 6:00AM May 23, 2013Observed: 11.1 ft at 7:00AM May 23, 2013Observed: 11.1 ft at 8:00AM May 23, 2013Observed: 11.2 ft at 9:00AM May 23, 2013Observed: 11.2 ft at 10:00AM May 23, 2013Observed: 11.2 ft at 11:00AM May 23, 2013Observed: 11.2 ft at 12:00PM May 23, 2013Observed: 11.2 ft at 1:00PM May 23, 2013Observed: 11.3 ft at 2:00PM May 23, 2013Observed: 11.3 ft at 3:00PM May 23, 2013Observed: 11.6 ft at 4:00PM May 23, 2013Observed: 11.5 ft at 5:00PM May 23, 2013Observed: 11.7 ft at 6:00PM May 23, 2013Observed: 11.9 ft at 7:00PM May 23, 2013Observed: 12 ft at 8:00PM May 23, 2013Highest Observation: 12.2 ft at 9:00PM May 23, 2013Forecast: 12.1 ft 2:00AM May 24, 2013Forecast: 10.8 ft 8:00AM May 24, 2013Forecast: 11 ft 2:00PM May 24, 2013Forecast: 12.3 ft 8:00PM May 24, 2013Highest Forecast: 13.8 ft 2:00AM May 25, 2013Forecast: 12.2 ft 8:00AM May 25, 2013Forecast: 11.5 ft 2:00PM May 25, 2013Forecast: 11.4 ft 8:00PM May 25, 2013Forecast: 12.3 ft 2:00AM May 26, 2013Forecast: 11.1 ft 8:00AM May 26, 2013Forecast: 10.7 ft 2:00PM May 26, 2013Forecast: 10.8 ft 8:00PM May 26, 2013Forecast: 11.5 ft 2:00AM May 27, 2013Forecast: 10.6 ft 8:00AM May 27, 2013Forecast: 10.3 ft 2:00PM May 27, 2013Forecast: 10.4 ft 8:00PM May 27, 2013Forecast: 11 ft 2:00AM May 28, 2013Forecast: 10.3 ft 8:00AM May 28, 2013Forecast: 10 ft 2:00PM May 28, 2013Forecast: 10.1 ft 8:00PM May 28, 2013CHRP1(plotting HTIRZ) Graph Created (10:31PM May 23, 2013)ObservedForecast (issued 9:51PM May 23)Latest observed value: 12.2 ft at 9:00 PM EDT 23-May-2013. Flood Stage is 28 ft
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NOTE: 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.

NOTE: Forecasts for the Monongahela River at Charleroi Lock and Dam are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Maxwell Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Elizabeth Lock and Dam
Flood Categories (in feet)
Major Flood Stage:35
Moderate Flood Stage:31
Flood Stage:28
Action Stage:22.6

Historical Crests
(1) 42.70 ft on 11/05/1985
(2) 41.10 ft on 03/09/1967
(3) 39.90 ft on 03/18/1936
(4) 39.80 ft on 01/20/1996
(5) 39.40 ft on 03/05/1963
(6) 39.20 ft on 06/04/1941
(7) 38.50 ft on 02/19/2000
(8) 38.00 ft on 10/16/1954
(9) 37.20 ft on 08/06/1956
(10) 36.10 ft on 03/28/1963
Show More Historical Crests

Low Water Records
(1) 0.00 ft on 01/01/1980
Legend
Gauge Location
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
37 50 HOMES ARE FLOODED IN ROSCOE. FLOODING ALSO OCCURS IN THE TOWNS OF ELKO...ALLENPORT...AND STOCKDALE
36 SEVERAL HOMES ARE FLOODED ON LYNN STREET IN ROSCOE
35 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 DIVISION OF AMERICAN CHAIN AND CABLE CO. IN MONESSEN FLOODS.
33 FLOODING IS WIDSPREAD IN FAYETTE CITY
32 FLOODING OCCURS ON CONNELLSVILLE...FOURTH...COOK...AND MAIN STREETS IN FAYETTE CITY
31.6 Lock walls overtopped.
30 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 Navigation suspended, lock out of service.
28 IN MONONGAHELA...BACKWATER FLOODING ALONG PIGEON CREEK BEGINS FROM THE INTERSECTION OF PARK WAY AND PARK AVENUE.
26 RT 201 IN CLOSED DUE TO FLOODING ALONG DONNER'S RUN
About This Location Collapse

Latitude: 40.149444° N, Longitude: 79.901667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 28 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 717.900024414062 ft 745.900024414062 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Other Data Sources:
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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Pittsburgh Weather Forecast Office
192 Shafer Road
Moon Township, PA 15108
(412) 262-1591
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Page last modified: 13-Mar-2013 6:34 PM 		Disclaimer
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