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This probabilistic forecast is issued by the Ohio River Forecast Center.
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About this graph
Forecasts for the Monongahela River at Point Marion Lock and Dam (lower pool) are issued routinely year-round.
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Upstream Gauge - at Morgantown Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Grays Landing Lock and Dam
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 27
Flood Stage: 26
Action Stage: 20
Low Stage (in feet): -9999

Historic Crests
(1) 34.00 ft on 01/19/1996
(2) 33.50 ft on 03/07/1967
(3) 32.30 ft on 02/19/2000
(4) 31.80 ft on 03/05/1963
(5) 30.30 ft on 07/29/2017
(6) 30.20 ft on 03/20/1963
(7) 29.70 ft on 05/24/1968
(8) 27.97 ft on 03/04/2015
(9) 27.66 ft on 02/17/2018
(10) 27.60 ft on 01/26/1978
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 26.90 ft on 03/01/2021 (P)
(2) 18.99 ft on 02/08/2019
(3) 22.40 ft on 09/28/2018
(4) 27.66 ft on 02/17/2018
(5) 30.30 ft on 07/29/2017
(6) 21.63 ft on 03/15/2015
(7) 27.97 ft on 03/04/2015
(8) 25.10 ft on 01/26/2010
(9) 26.19 ft on 05/04/2009
(10) 23.65 ft on 06/05/2008
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 01/01/1980
KML Image
Gauge LocationGauge Map Marker
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
If you notice any errors in the below information, please contact our Webmaster
45 Flood waters extend to near the railroad tracks.
44.4 Water reaches the flood of record...Election Day Flood event...November 5, 1985.
40 Flood waters extend to main and cheat streets.
35 Flood waters reach portions of Fourth, Water, Second, Broadway, and Home Streets in Point Marion.
34 Flood waters reach homes on Water Street, and the lock walls are overtopped at Point Marion Locks and Dam.
30.36 Water levels reach the flood levels of the flood of July 29, 2017.
29.7 The first floors of about twenty-five homes in Point Marion are flooded, and backwater flooding occurs along Camp Run.
29 The locks go out of service at the Point Marion Locks and Dam, and navigation is suspended. Flood waters reach Water Street near the intersection with Penn Street in Point Marion.
27.97 Water reaches the level reached on March 4, 2015.
27.5 Flood waters reach the access road to Point Marion Locks and Dam about 0.8 of a mile below the dam.
26 Basement flooding begins in some homes and businesses in Point Marion.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 10 Day (NAEFS) 10 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

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: 2-Nov-2020 7:30 PM
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