Monongahela River at Braddock Lock and Dam
Pennsylvania — Water Level & Flood Stage
Located in Allegheny County, Pennsylvania on the Monongahela River. Live water level data from USGS gauge 03085000, updated every 15 minutes.
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
Flood Stages
Major Flood
24 ft
Moderate Flood
23 ft
Minor Flood
22 ft
Action Stage
18.2 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
29 ft
Back 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 ft
Severe flooding occurs at communities of Braddock, Dravosburg, Rankin and others.
24.8 ft
Thirty homes along Route 837 in Dravosburg flood.
24.05 ft
Water levels reach the flood levels of the flood of July 30, 2017.
24 ft
Sewers back up in McKeesport along Market, 12th and 13th streets affecting the Riverside Senior Care Center, Kane Hospital and Isbir Manor.
23 ft
Backwater 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 ft
Sewers 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 ft
Lock walls overtopped.
19 ft
Navigation suspended, lock out of service.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Mar 17, 1936 | 35.3 ft | 300,000 cfs |
| Mar 17, 1936 | 35.3 ft | 300,000 cfs |
| Jun 23, 1972 | 29.7 ft | — |
| Jun 23, 1972 | 29.7 ft | — |
| Jan 19, 1996 | 29.1 ft | 230,000 cfs |
About This Gauge
USGS Site
NWS LID
BDDP1
River
Monongahela River
County
Allegheny, PA
Coordinates
40.3925°N, 79.8603°W
Get Flood Alerts for Monongahela River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Monongahela River at Braddock Lock and Dam?
The Monongahela River at Braddock Lock and Dam gauge is maintained by USGS (site 03085000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Monongahela River at Braddock Lock and Dam?
The NWS-defined flood stage for Monongahela River at Braddock Lock and Dam is 22 feet. Action stage begins at 18.2 feet. Moderate flooding starts at 23 feet, and major flooding at 24 feet.
How do I get alerts when Monongahela River rises?
Download StormCast free on Google Play, go to River Gauges, and add Monongahela River at Braddock Lock and Dam to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Monongahela River at Braddock Lock and Dam gauge located?
The gauge is located in Allegheny County, Pennsylvania at coordinates 40.3925°N, 79.8603°W. USGS site number: 03085000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Monongahela River
On This River
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers
- 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.