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Weather Forecast Office Pittsburgh, PA Ohio River Forecast Center

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Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Allegheny River at Clinton L&D Forecast crest: 10 ft at 7:00am Nov 24 Observed crest: 10.13 ft at 1:45pm Nov 21 Observed: 9.72 ft at 12:45am Nov 21 Observed: 9.74 ft at 1:00am Nov 21 Observed: 9.75 ft at 1:15am Nov 21 Observed: 9.76 ft at 1:30am Nov 21 Observed: 9.76 ft at 1:45am Nov 21 Observed: 9.77 ft at 2:00am Nov 21 Observed: 9.75 ft at 2:15am Nov 21 Observed: 9.75 ft at 2:30am Nov 21 Observed: 9.77 ft at 2:45am Nov 21 Observed: 9.77 ft at 3:00am Nov 21 Observed: 9.75 ft at 3:15am Nov 21 Observed: 9.76 ft at 3:30am Nov 21 Observed: 9.78 ft at 3:45am Nov 21 Observed: 9.78 ft at 4:00am Nov 21 Observed: 9.78 ft at 4:15am Nov 21 Observed: 9.8 ft at 4:30am Nov 21 Observed: 9.78 ft at 4:45am Nov 21 Observed: 9.79 ft at 5:00am Nov 21 Observed: 9.77 ft at 5:15am Nov 21 Observed: 9.77 ft at 5:30am Nov 21 Observed: 9.77 ft at 5:45am Nov 21 Observed: 9.79 ft at 6:00am Nov 21 Observed: 9.78 ft at 6:15am Nov 21 Observed: 9.77 ft at 6:30am Nov 21 Observed: 9.78 ft at 6:45am Nov 21 Observed: 9.84 ft at 7:00am Nov 21 Observed: 9.82 ft at 7:15am Nov 21 Observed: 9.82 ft at 7:30am Nov 21 Observed: 9.86 ft at 7:45am Nov 21 Observed: 9.85 ft at 8:00am Nov 21 Observed: 9.87 ft at 8:15am Nov 21 Observed: 9.91 ft at 8:30am Nov 21 Observed: 9.93 ft at 8:45am Nov 21 Observed: 9.94 ft at 9:00am Nov 21 Observed: 9.95 ft at 9:15am Nov 21 Observed: 9.96 ft at 9:30am Nov 21 Observed: 9.98 ft at 9:45am Nov 21 Observed: 10.02 ft at 10:00am Nov 21 Observed: 10.02 ft at 10:15am Nov 21 Observed: 10.05 ft at 10:30am Nov 21 Observed: 10.08 ft at 10:45am Nov 21 Observed: 10.07 ft at 11:00am Nov 21 Observed: 10.09 ft at 11:15am Nov 21 Observed: 10.09 ft at 11:30am Nov 21 Observed: 10.07 ft at 11:45am Nov 21 Observed: 10.09 ft at 12:00pm Nov 21 Observed: 10.08 ft at 12:15pm Nov 21 Observed: 10.1 ft at 12:30pm Nov 21 Observed: 10.12 ft at 12:45pm Nov 21 Observed: 10.09 ft at 1:00pm Nov 21 Observed: 10.09 ft at 1:15pm Nov 21 Observed: 10.09 ft at 1:30pm Nov 21 Observed: 10.13 ft at 1:45pm Nov 21 Observed: 10.1 ft at 2:00pm Nov 21 Observed: 10.11 ft at 2:15pm Nov 21 Observed: 10.1 ft at 2:30pm Nov 21 Observed: 10.1 ft at 2:45pm Nov 21 Observed: 10.1 ft at 3:00pm Nov 21 Observed: 10.08 ft at 3:15pm Nov 21 Observed: 10.04 ft at 3:30pm Nov 21 Observed: 10.05 ft at 3:45pm Nov 21 Observed: 10.07 ft at 4:00pm Nov 21 Observed: 10.04 ft at 4:15pm Nov 21 Observed: 10.02 ft at 4:30pm Nov 21 Observed: 10.02 ft at 4:45pm Nov 21 Observed: 10 ft at 5:00pm Nov 21 Observed: 10.01 ft at 5:15pm Nov 21 Observed: 9.99 ft at 5:30pm Nov 21 Observed: 9.98 ft at 5:45pm Nov 21 Observed: 9.97 ft at 6:00pm Nov 21 Observed: 9.97 ft at 6:15pm Nov 21 Observed: 9.97 ft at 6:30pm Nov 21 Observed: 9.97 ft at 6:45pm Nov 21 Observed: 9.95 ft at 7:00pm Nov 21 Observed: 9.96 ft at 7:15pm Nov 21 Observed: 9.96 ft at 7:30pm Nov 21 Observed: 9.93 ft at 7:45pm Nov 21 Observed: 9.92 ft at 8:00pm Nov 21 Observed: 9.91 ft at 8:15pm Nov 21 Observed: 9.91 ft at 8:30pm Nov 21 Observed: 9.92 ft at 8:45pm Nov 21 Observed: 9.9 ft at 9:00pm Nov 21 Observed: 9.91 ft at 9:15pm Nov 21 Observed: 9.9 ft at 9:30pm Nov 21 Observed: 9.91 ft at 9:45pm Nov 21 Observed: 9.88 ft at 10:00pm Nov 21 Observed: 9.93 ft at 10:15pm Nov 21 Observed: 9.87 ft at 10:30pm Nov 21 Observed: 9.89 ft at 10:45pm Nov 21 Observed: 9.87 ft at 11:00pm Nov 21 Observed: 9.87 ft at 11:15pm Nov 21 Observed: 9.9 ft at 11:30pm Nov 21 Observed: 9.89 ft at 11:45pm Nov 21 Observed: 9.93 ft at 12:00am Nov 22 Observed: 9.9 ft at 12:15am Nov 22 Observed: 9.91 ft at 12:30am Nov 22 Observed: 9.94 ft at 12:45am Nov 22 Observed: 9.93 ft at 1:00am Nov 22 Observed: 9.94 ft at 1:15am Nov 22 Observed: 9.94 ft at 1:30am Nov 22 Observed: 10 ft at 1:45am Nov 22 Observed: 9.96 ft at 2:00am Nov 22 Observed: 9.98 ft at 2:15am Nov 22 Observed: 9.97 ft at 2:30am Nov 22 Observed: 10 ft at 2:45am Nov 22 Observed: 10 ft at 3:00am Nov 22 Observed: 9.99 ft at 3:15am Nov 22 Observed: 10 ft at 3:30am Nov 22 Observed: 10 ft at 3:45am Nov 22 Observed: 10.03 ft at 4:00am Nov 22 Observed: 10 ft at 4:15am Nov 22 Observed: 10.01 ft at 4:30am Nov 22 Observed: 10.03 ft at 4:45am Nov 22 Observed: 10.02 ft at 5:00am Nov 22 Observed: 10.02 ft at 5:15am Nov 22 Observed: 10.04 ft at 5:30am Nov 22 Observed: 10.03 ft at 5:45am Nov 22 Observed: 10.02 ft at 6:00am Nov 22 Observed: 10.03 ft at 6:15am Nov 22 Observed: 10.05 ft at 6:30am Nov 22 Observed: 10.03 ft at 6:45am Nov 22 Observed: 10.05 ft at 7:00am Nov 22 Observed: 10.06 ft at 7:15am Nov 22 Observed: 10.04 ft at 7:30am Nov 22 Observed: 10.03 ft at 7:45am Nov 22 Observed: 10.04 ft at 8:00am Nov 22 Observed: 10.06 ft at 8:15am Nov 22 Observed: 10.06 ft at 8:30am Nov 22 Observed: 10.04 ft at 8:45am Nov 22 Observed: 10.06 ft at 9:00am Nov 22 Observed: 10.04 ft at 9:15am Nov 22 Observed: 10.03 ft at 9:30am Nov 22 Observed: 10.04 ft at 9:45am Nov 22 Observed: 10.06 ft at 10:00am Nov 22 Observed: 10.03 ft at 10:15am Nov 22 Observed: 10.02 ft at 10:30am Nov 22 Observed: 10.01 ft at 10:45am Nov 22 Observed: 10.01 ft at 11:00am Nov 22 Observed: 10.01 ft at 11:15am Nov 22 Observed: 10.01 ft at 11:30am Nov 22 Observed: 10.02 ft at 11:45am Nov 22 Observed: 9.99 ft at 12:00pm Nov 22 Observed: 9.99 ft at 12:15pm Nov 22 Observed: 9.98 ft at 12:30pm Nov 22 Observed: 9.98 ft at 12:45pm Nov 22 Observed: 9.96 ft at 1:00pm Nov 22 Observed: 9.97 ft at 1:15pm Nov 22 Observed: 9.95 ft at 1:30pm Nov 22 Observed: 9.95 ft at 1:45pm Nov 22 Observed: 9.94 ft at 2:00pm Nov 22 Observed: 9.93 ft at 2:15pm Nov 22 Observed: 9.92 ft at 2:30pm Nov 22 Observed: 9.93 ft at 2:45pm Nov 22 Observed: 9.91 ft at 3:00pm Nov 22 Observed: 9.92 ft at 3:15pm Nov 22 Observed: 9.93 ft at 3:30pm Nov 22 Observed: 9.9 ft at 3:45pm Nov 22 Observed: 9.87 ft at 4:00pm Nov 22 Observed: 9.92 ft at 4:15pm Nov 22 Observed: 9.85 ft at 4:30pm Nov 22 Observed: 9.87 ft at 4:45pm Nov 22 Observed: 9.89 ft at 5:00pm Nov 22 Observed: 9.88 ft at 5:15pm Nov 22 Observed: 9.84 ft at 5:30pm Nov 22 Observed: 9.83 ft at 5:45pm Nov 22 Observed: 9.81 ft at 6:00pm Nov 22 Observed: 9.8 ft at 6:15pm Nov 22 Observed: 9.8 ft at 6:30pm Nov 22 Observed: 9.79 ft at 6:45pm Nov 22 Observed: 9.79 ft at 7:00pm Nov 22 Observed: 9.78 ft at 7:15pm Nov 22 Observed: 9.81 ft at 7:30pm Nov 22 Observed: 9.78 ft at 7:45pm Nov 22 Observed: 9.78 ft at 8:00pm Nov 22 Observed: 9.76 ft at 8:15pm Nov 22 Observed: 9.76 ft at 8:30pm Nov 22 Observed: 9.77 ft at 8:45pm Nov 22 Observed: 9.74 ft at 9:00pm Nov 22 Observed: 9.77 ft at 9:15pm Nov 22 Observed: 9.74 ft at 9:30pm Nov 22 Observed: 9.74 ft at 9:45pm Nov 22 Observed: 9.75 ft at 10:00pm Nov 22 Observed: 9.78 ft at 10:15pm Nov 22 Observed: 9.76 ft at 10:30pm Nov 22 Observed: 9.76 ft at 10:45pm Nov 22 Observed: 9.77 ft at 11:00pm Nov 22 Observed: 9.8 ft at 11:15pm Nov 22 Observed: 9.77 ft at 11:30pm Nov 22 Observed: 9.79 ft at 11:45pm Nov 22 Observed: 9.78 ft at 12:00am Nov 23 Observed: 9.79 ft at 12:15am Nov 23 Observed: 9.79 ft at 12:30am Nov 23 Observed: 9.8 ft at 12:45am Nov 23 Observed: 9.8 ft at 1:00am Nov 23 Observed: 9.81 ft at 1:15am Nov 23 Observed: 9.81 ft at 1:30am Nov 23 Observed: 9.83 ft at 1:45am Nov 23 Observed: 9.83 ft at 2:00am Nov 23 Observed: 9.85 ft at 2:15am Nov 23 Observed: 9.84 ft at 2:30am Nov 23 Observed: 9.83 ft at 2:45am Nov 23 Observed: 9.85 ft at 3:00am Nov 23 Observed: 9.84 ft at 3:15am Nov 23 Observed: 9.84 ft at 3:30am Nov 23 Observed: 9.86 ft at 3:45am Nov 23 Observed: 9.88 ft at 4:00am Nov 23 Observed: 9.88 ft at 4:15am Nov 23 Observed: 9.88 ft at 4:30am Nov 23 Observed: 9.9 ft at 4:45am Nov 23 Observed: 9.9 ft at 5:00am Nov 23 Observed: 9.92 ft at 5:15am Nov 23 Observed: 9.91 ft at 5:30am Nov 23 Observed: 9.93 ft at 5:45am Nov 23 Observed: 9.94 ft at 6:00am Nov 23 Observed: 9.94 ft at 6:15am Nov 23 Observed: 9.94 ft at 6:30am Nov 23 Observed: 9.95 ft at 6:45am Nov 23 Observed: 9.98 ft at 7:00am Nov 23 Observed: 9.99 ft at 7:15am Nov 23 Observed: 9.98 ft at 7:30am Nov 23 Observed: 9.98 ft at 7:45am Nov 23 Observed: 10 ft at 8:00am Nov 23 Observed: 9.99 ft at 8:15am Nov 23 Observed: 9.99 ft at 8:30am Nov 23 Observed: 10.01 ft at 8:45am Nov 23 Observed: 10.01 ft at 9:00am Nov 23 Observed: 10.01 ft at 9:15am Nov 23 Observed: 10.02 ft at 9:30am Nov 23 Observed: 10.02 ft at 9:45am Nov 23 Observed: 10.02 ft at 10:00am Nov 23 Observed: 10.02 ft at 10:15am Nov 23 Observed: 10.02 ft at 10:30am Nov 23 Observed: 10.02 ft at 10:45am Nov 23 Observed: 10.02 ft at 11:00am Nov 23 Observed: 10.01 ft at 11:15am Nov 23 Observed: 10.02 ft at 11:30am Nov 23 Observed: 10.01 ft at 11:45am Nov 23 Observed: 9.99 ft at 12:00pm Nov 23 Observed: 9.99 ft at 12:15pm Nov 23 Observed: 9.98 ft at 12:30pm Nov 23 Observed: 9.97 ft at 12:45pm Nov 23 Observed: 9.98 ft at 1:00pm Nov 23 Observed: 9.94 ft at 1:15pm Nov 23 Observed: 9.93 ft at 1:30pm Nov 23 Observed: 9.94 ft at 1:45pm Nov 23 Observed: 9.93 ft at 2:00pm Nov 23 Observed: 9.92 ft at 2:15pm Nov 23 Observed: 9.89 ft at 2:30pm Nov 23 Observed: 9.87 ft at 2:45pm Nov 23 Observed: 9.86 ft at 3:00pm Nov 23 Observed: 9.85 ft at 3:15pm Nov 23 Observed: 9.84 ft at 3:30pm Nov 23 Observed: 9.85 ft at 3:45pm Nov 23 Observed: 9.81 ft at 4:00pm Nov 23 Observed: 9.79 ft at 4:15pm Nov 23 Observed: 9.78 ft at 4:30pm Nov 23 Observed: 9.78 ft at 4:45pm Nov 23 Observed: 9.75 ft at 5:00pm Nov 23 Observed: 9.76 ft at 5:15pm Nov 23 Observed: 9.74 ft at 5:30pm Nov 23 Observed: 9.72 ft at 5:45pm Nov 23 Observed: 9.71 ft at 6:00pm Nov 23 Observed: 9.7 ft at 6:15pm Nov 23 Observed: 9.71 ft at 6:30pm Nov 23 Observed: 9.7 ft at 6:45pm Nov 23 Observed: 9.7 ft at 7:00pm Nov 23 Observed: 9.69 ft at 7:15pm Nov 23 Observed: 9.71 ft at 7:30pm Nov 23 Observed: 9.69 ft at 7:45pm Nov 23 Observed: 9.69 ft at 8:00pm Nov 23 Observed: 9.69 ft at 8:15pm Nov 23 Observed: 9.71 ft at 8:30pm Nov 23 Observed: 9.69 ft at 8:45pm Nov 23 Observed: 9.69 ft at 9:00pm Nov 23 Observed: 9.69 ft at 9:15pm Nov 23 Observed: 9.71 ft at 9:30pm Nov 23 Observed: 9.69 ft at 9:45pm Nov 23 Observed: 9.68 ft at 10:00pm Nov 23 Observed: 9.68 ft at 10:15pm Nov 23 Observed: 9.68 ft at 10:30pm Nov 23 Observed: 9.68 ft at 10:45pm Nov 23 Observed: 9.68 ft at 11:00pm Nov 23 Observed: 9.69 ft at 11:15pm Nov 23 Observed: 9.69 ft at 11:30pm Nov 23 Observed: 9.71 ft at 11:45pm Nov 23 Observed: 9.7 ft at 12:00am Nov 24 Forecast: 9.8 ft at 1:00am Nov 24 Forecast: 10 ft at 7:00am Nov 24 Forecast: 9.9 ft at 1:00pm Nov 24 Forecast: 9.7 ft at 7:00pm Nov 24 Forecast: 9.7 ft at 1:00am Nov 25 Forecast: 9.7 ft at 7:00am Nov 25 Forecast: 9.7 ft at 1:00pm Nov 25 Forecast: 9.6 ft at 7:00pm Nov 25 Forecast: 9.6 ft at 1:00am Nov 26 Forecast: 9.6 ft at 7:00am Nov 26 Forecast: 9.6 ft at 1:00pm Nov 26 Forecast: 9.7 ft at 7:00pm Nov 26 Forecast: 9.7 ft at 1:00am Nov 27 Forecast: 9.7 ft at 7:00am Nov 27 Forecast: 9.7 ft at 1:00pm Nov 27 Forecast: 9.7 ft at 7:00pm Nov 27 Forecast: 9.7 ft at 1:00am Nov 28 Forecast: 9.7 ft at 7:00am Nov 28 Forecast: 9.7 ft at 1:00pm Nov 28 Forecast: 9.7 ft at 7:00pm Nov 28 Graph Created (1:02am Nov 24, 2009) Observed Forecast (issued 7:35pm Nov 23) CLNP1 (plotting HPIRG) Gage 0 Datum: 759.96 Latest observed value: 9.7 ft at 12:00 AM EST 24-Nov-2009. Flood Stage is 21.0 ft. Pool (ft) Flow (kcfs)
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Tabular Data
XML Data
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Datum: N/A
Metadata
NOTE: The above river forecast includes future rainfall. Forecast stages may be different if the rainfall does not occur.

NOTE: Forecasts for the Allegheny River at Clinton L&D are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Kittanning L&D Upstream Gauge Downstream Gauge Downstream Gauge - at Freeport L&D

Flood Categories (in feet)
Major Flood Stage:24
Moderate Flood Stage:22
Flood Stage:21
Action Stage:17

Historical Crests
(1) 26.40 ft on 03/18/1936
(2) 22.00 ft on 06/23/1972
(3) 20.30 ft on 09/18/2004
(4) 19.80 ft on 03/16/2007
(5) 19.20 ft on 12/31/1990
(6) 16.20 ft on 03/23/2007

Low Water Records
Currently none available.

Allegheny River at Clinton L&D location map

Flood Impacts Collapse
26.4 WATER REACHES THE BOTTOM OF THE FIRST FLOOR WINDOW OF THE POWERHOUSE AT LOCK 6.
23.0 TOP OF RAIL OF THE PENNSYLVANIA RAILROAD ACROSS THE RIVER FROM THE LOCK FLOODS.
19.0 Lock walls overtopped.
17.0 Navigation suspended, lock out of service.

About This Location Collapse
Latitude: 40.716100° N, Longitude: 79.581100° W, Horizontal Datum: NAD83

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 21 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 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 759.96 ft 780.96 ft Older USGS topographic maps, NGVD29 benchmarks
MSL N/A N/A Older USGS topographic maps, MSL benchmarks
Other N/A N/A  

Other Data Sources:
Corps of Engineers (COE) Info for Clinton L&D

Resources Collapse
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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