Monongahela River at Braddock Lock and Dam, PA
River level and flood forecast · Allegheny County
Normal14.0 ftas of Mon 3:58 PM
The river is 8.0 ft below flood stage (22 ft).
Forecast to rise to 14.8 ft Tue 8 AM, below the 22 ft flood stage.
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 1:58 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 24 ft |
| Moderate flood stage | 23 ft |
| Flood stage | 22 ft |
| Action stage | 18.2 ft |
| Record crest (March 18, 1936) | 35.3 ft |
What floods at each level
From the National Weather Service, highest first.
- 29 ftBack water flooding along the Youghiogheny River causes widespread flooding from McKeesport upstream to Boston. Water will reach a depth of 3 to 4 feet at the intersection Market and Buena Vista Streets in McKeesport, and 3 to 4 feet at intersection of 37th and Walnut Streets in Versailles.
- 28 ftSevere flooding occurs at communities of Braddock, Dravosburg, Rankin and others.
- 24.8 ftThirty homes along Route 837 in Dravosburg flood.
- 24.05 ftWater levels reach the flood levels of the flood of July 30, 2017.
- 24 ftSewers back up in McKeesport along Market, 12th and 13th streets affecting the Riverside Senior Care Center, Kane Hospital and Isbir Manor.
- 23 ftBackwater flooding along the Youghiogheny river in McKeesport will flood the lower parking lot and dock area of the McKees Point boat complex. Backwater flooding further upstream on the Youghiogheny River will flood the lower parking lot of the community park near the Boston bridge in Boston.
- 22 ftSewers begin to back up along 12th, 13th and Buena Vista streets in McKeesport prompting evacuations to begin. In Boston, backwater flooding on the Youghiogheny River will begin to flood the restaurant on Saint David Street.
- 20.8 ftLock walls overtopped.
- 19 ftNavigation suspended, lock out of service.
Highest crests on record
- 35.3 ft — March 18, 1936
- 29.7 ft — June 24, 1972
- 29.1 ft — January 20, 1996
- 28.6 ft — November 6, 1985
- 28.2 ft — October 16, 1954
Recent crests: 24.43 ft (April 4, 2024) · 16.84 ft (February 9, 2019) · 22.52 ft (September 11, 2018) · 22.58 ft (February 17, 2018) · 21.13 ft (July 30, 2017)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (BDDP1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.