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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 Ohio River at Dashields Lock and Dam are issued routinely year-round.
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Downstream Gauge Downstream Gauge - at Montgomery Lock and Dam
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 32
Moderate Flood Stage: 29
Flood Stage: 25
Action Stage: 19.4
Low Stage (in feet): -9999

Historic Crests
(1) 42.80 ft on 03/18/1936
(2) 35.90 ft on 12/31/1942
(3) 33.20 ft on 01/20/1996
(4) 33.00 ft on 06/24/1972
(5) 32.10 ft on 03/07/1975
(6) 31.40 ft on 10/16/1954
(7) 30.00 ft on 03/11/1964
(8) 29.90 ft on 09/19/2004
(9) 28.80 ft on 01/22/1959
(10) 27.50 ft on 12/04/1959
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 26.82 ft on 04/04/2024
(2) 25.98 ft on 09/11/2018
(3) 26.03 ft on 02/17/2018
(4) 20.17 ft on 03/24/2007
(5) 22.76 ft on 03/16/2007
(6) 27.18 ft on 01/07/2005
(7) 29.90 ft on 09/19/2004
(8) 19.38 ft on 02/24/2003
(9) 33.20 ft on 01/20/1996
(10) 26.40 ft on 12/31/1990
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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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
48 The railroad tracks flood in the vicinity of Chadwick Street in Sewickley.
45 Water flowing through the railroad underpass reaches the intersection of Chestnut and Chadwick Streets in Sewickley.
37 State Route 51 at Stoops Ferry Road at Narrows Run floods, and the parking lot behind the Sewickley Station on Chestnut Street in Sewickley floods. Water reaches the parking lot of the Paradise Island Bowl on Neville Island.
34 Flooding reaches front yards of homes along Chestnut Avenue between White and Ferry Streets in Sewickley.
33 Water reaches the parking lot of the United States Coast Guard Station.
32 Front River Road on Neville Island begins to flood.
31 Flooding begins in the vicinity of I-79 intersection and Grand Avenue on Neville Island from water backing up into drains.
30 Water is in basements of low-lying houses along front River Road on Neville Island.
28 Backyards of low lying houses along Front River Road on Nevelle Island are flooded. Chestnut Avenue is flooded near intersection with Ferry Street
27 The access roads to Dashileds Locks and Dam and the United States Coast Guard Station begin to flood. The beach area at Paradise Island Bowl on Neville Island begins to flood.
26.4 Lock walls are overtopped.
23 Navigation suspended at Dashields Locks and Dam, lock out of service.
(1) Dashields DCP and River Gage Data Logger
(2) View Downstream from Dashields Dam
(3) View of Dashields Dam from Lock Wall
(4) Top of Wall on U.S. Coast Guard Dock is 33 Feet
(5) Dashields Dam Upper Pool lower half of Staff Gage
(6) Dashields Dam Upper Pool Upper half staff Gage

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: 30-Oct-2020 4:10 PM
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