Rivers in Pennsylvania
Monongahela River at Braddock Lock and Dam
Below flood stage
14.11ftStage
Observed Mon, Sep 28, 5:58 AM EDT
- Flood stage
- 22.00 ft
- Forecast crest
- 14.40 ftMon, Sep 28, 8:00 AM EDT
- Record crest
- 35.30 ft1936
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 24.00 ft |
| Moderate flood | 23.00 ft |
| Minor flood | 22.00 ft |
| Action | 18.20 ft |
- 29.00 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.
- 28.00 ftSevere flooding occurs at communities of Braddock, Dravosburg, Rankin and others.
- 24.80 ftThirty homes along Route 837 in Dravosburg flood.
- 24.05 ftWater levels reach the flood levels of the flood of July 30, 2017.
- 24.00 ftSewers back up in McKeesport along Market, 12th and 13th streets affecting the Riverside Senior Care Center, Kane Hospital and Isbir Manor.
- 23.00 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.
- 22.00 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.
- 20.80 ftLock walls overtopped.
- 19.00 ftNavigation suspended, lock out of service.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 8% |
| Moderate flooding | 7% |
| Major flooding | 7% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 22, 2026.
Crest history
24 crests on NOAA’s list since 1936.
| # | Date | Stage |
|---|---|---|
| 1 | March 18, 1936 | 35.30 ft |
| 2 | June 24, 1972 | 29.70 ft |
| 3 | January 20, 1996 | 29.10 ft |
| 4 | November 6, 1985 | 28.60 ft |
| 5 | October 16, 1954 | 28.20 ft |
| 6 | December 30, 1942 | 27.10 ft |
| 7 | April 4, 2024 | 24.43 ft |
| 8 | February 20, 2000 | 24.20 ft |
| 9 | November 20, 2003 | 23.10 ft |
| 10 | February 17, 2018 | 22.58 ft |
| 11 | September 11, 2018 | 22.52 ft |
| 12 | December 19, 1990 | 22.00 ft |
| 13 | February 10, 1994 | 22.00 ft |
| 14 | January 29, 1994 | 21.90 ft |
| 15 | December 31, 1990 | 21.80 ft |
| 16 | March 5, 2015 | 21.71 ft |
| 17 | February 7, 2004 | 21.40 ft |
| 18 | January 6, 2005 | 21.40 ft |
| 19 | March 7, 2004 | 21.30 ft |
| 20 | July 30, 2017 | 21.13 ft |
| 21 | February 24, 2003 | 20.90 ft |
| 22 | September 18, 2004 | 20.70 ft |
| 23 | March 21, 2002 | 20.30 ft |
| 24 | February 9, 2019 | 16.84 ft |
Most recent crests
- April 4, 2024: 24.43 ft
- February 9, 2019: 16.84 ft
- September 11, 2018: 22.52 ft
- February 17, 2018: 22.58 ft
- July 30, 2017: 21.13 ft
- March 5, 2015: 21.71 ft
- January 6, 2005: 21.40 ft
- September 18, 2004: 20.70 ft
- March 7, 2004: 21.30 ft
- February 7, 2004: 21.40 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Ohio River Forecast Center. Forecasts are issued routinely year-round. The above river forecast includes future rainfall/snowmelt. Forecast stages may be different if the actual rainfall/snowmelt is different than the forecast rainfall/snowmelt. Stage may be affected by ice.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.