Ohio River at Dashields Lock and Dam, PA
River level and flood forecast · Allegheny County
The river is 8.8 ft below flood stage (25 ft).
Forecast to rise to 16.5 ft Mon 2 PM, below the 25 ft flood stage.
Flow: 47,800 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 10:12 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 32 ft |
| Moderate flood stage | 29 ft |
| Flood stage | 25 ft |
| Action stage | 19.4 ft |
| Record crest (March 18, 1936) | 42.8 ft |
What floods at each level
From the National Weather Service, highest first.
- 48 ftThe railroad tracks flood in the vicinity of Chadwick Street in Sewickley.
- 45 ftWater flowing through the railroad underpass reaches the intersection of Chestnut and Chadwick Streets in Sewickley.
- 37 ftState 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 ftFlooding reaches front yards of homes along Chestnut Avenue between White and Ferry Streets in Sewickley.
- 33 ftWater reaches the parking lot of the United States Coast Guard Station.
- 32 ftFront River Road on Neville Island begins to flood.
- 31 ftFlooding begins in the vicinity of I-79 intersection and Grand Avenue on Neville Island from water backing up into drains.
- 30 ftWater is in basements of low-lying houses along front River Road on Neville Island.
- 28 ftBackyards of low lying houses along Front River Road on Nevelle Island are flooded. Chestnut Avenue is flooded near intersection with Ferry Street
- 27 ftThe 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 ftLock walls are overtopped.
- 23 ftNavigation suspended at Dashields Locks and Dam, lock out of service.
Highest crests on record
- 42.8 ft — March 18, 1936
- 35.9 ft — December 31, 1942
- 33.2 ft — January 20, 1996
- 33 ft — June 24, 1972
- 32.1 ft — March 7, 1975
Recent crests: 26.82 ft (April 4, 2024) · 25.98 ft (September 11, 2018) · 26.03 ft (February 17, 2018) · 20.17 ft (March 24, 2007) · 22.76 ft (March 16, 2007)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (DSHP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.