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Hydrograph River at a Glance Download
Monongahela River at Braddock Lock and Dam Pool (ft)Flow (kcfs)Observed: 12.08 ft at 10:45PM May 19, 2015Observed: 12.09 ft at 11:00PM May 19, 2015Observed: 12.1 ft at 11:15PM May 19, 2015Observed: 12.11 ft at 11:30PM May 19, 2015Observed: 12.16 ft at 11:45PM May 19, 2015Observed: 12.17 ft at 12:00AM May 20, 2015Observed: 12.13 ft at 12:15AM May 20, 2015Observed: 12.21 ft at 12:30AM May 20, 2015Observed: 12.21 ft at 12:45AM May 20, 2015Observed: 12.23 ft at 1:00AM May 20, 2015Observed: 12.25 ft at 1:15AM May 20, 2015Observed: 12.28 ft at 1:30AM May 20, 2015Observed: 12.31 ft at 1:45AM May 20, 2015Observed: 12.31 ft at 2:00AM May 20, 2015Observed: 12.35 ft at 2:15AM May 20, 2015Observed: 12.42 ft at 2:30AM May 20, 2015Observed: 12.42 ft at 2:45AM May 20, 2015Observed: 12.44 ft at 3:00AM May 20, 2015Observed: 12.45 ft at 3:15AM May 20, 2015Observed: 12.48 ft at 3:30AM May 20, 2015Observed: 12.49 ft at 3:45AM May 20, 2015Observed: 12.49 ft at 4:00AM May 20, 2015Observed: 12.49 ft at 4:15AM May 20, 2015Observed: 12.49 ft at 4:30AM May 20, 2015Observed: 12.48 ft at 4:45AM May 20, 2015Observed: 12.38 ft at 5:00AM May 20, 2015Observed: 12.39 ft at 5:15AM May 20, 2015Observed: 12.35 ft at 5:30AM May 20, 2015Highest Observation: 22.76 ft at 5:45AM May 20, 2015Observed: 12.29 ft at 6:00AM May 20, 2015Observed: 12.25 ft at 6:15AM May 20, 2015Observed: 12.17 ft at 6:30AM May 20, 2015Observed: 12.18 ft at 6:45AM May 20, 2015Observed: 12.17 ft at 7:00AM May 20, 2015Observed: 12.11 ft at 7:15AM May 20, 2015Observed: 12.05 ft at 7:30AM May 20, 2015Observed: 12.02 ft at 7:45AM May 20, 2015Observed: -0.01 ft at 10:15AM May 21, 2015Observed: -0.01 ft at 10:30AM May 21, 2015Observed: -0.01 ft at 10:45AM May 21, 2015Observed: -0.01 ft at 11:00AM May 21, 2015Observed: -0.01 ft at 11:15AM May 21, 2015Observed: -0.01 ft at 11:30AM May 21, 2015Observed: -0.01 ft at 11:45AM May 21, 2015Observed: -0.01 ft at 12:00PM May 21, 2015Observed: -0.01 ft at 12:15PM May 21, 2015Observed: 12.23 ft at 12:30PM May 21, 2015Observed: 12.34 ft at 12:45PM May 21, 2015Observed: 12.32 ft at 1:00PM May 21, 2015Observed: 12.32 ft at 1:15PM May 21, 2015Observed: 12.37 ft at 1:30PM May 21, 2015Observed: 12.34 ft at 1:45PM May 21, 2015Observed: 12.32 ft at 2:00PM May 21, 2015Observed: 12.2 ft at 2:15PM May 21, 2015Observed: 12.3 ft at 2:30PM May 21, 2015Observed: 12.32 ft at 2:45PM May 21, 2015Observed: 12.33 ft at 3:00PM May 21, 2015Observed: 12.34 ft at 3:15PM May 21, 2015Observed: 12.3 ft at 3:30PM May 21, 2015Observed: 12.3 ft at 3:45PM May 21, 2015Observed: 12.25 ft at 4:00PM May 21, 2015Observed: 12.29 ft at 4:15PM May 21, 2015Observed: 12.28 ft at 4:30PM May 21, 2015Observed: 12.3 ft at 4:45PM May 21, 2015Observed: 12.32 ft at 5:00PM May 21, 2015Observed: 12.31 ft at 5:15PM May 21, 2015Observed: 12.32 ft at 5:30PM May 21, 2015Observed: 12.24 ft at 5:45PM May 21, 2015Observed: 12.29 ft at 6:00PM May 21, 2015Observed: 12.28 ft at 6:15PM May 21, 2015Observed: 12.29 ft at 6:30PM May 21, 2015Observed: 12.32 ft at 6:45PM May 21, 2015Observed: 12.33 ft at 7:00PM May 21, 2015Observed: 12.33 ft at 7:15PM May 21, 2015Observed: 12.32 ft at 7:30PM May 21, 2015Observed: 12.26 ft at 7:45PM May 21, 2015Observed: 12.26 ft at 8:00PM May 21, 2015Observed: 12.22 ft at 8:15PM May 21, 2015Observed: 12.28 ft at 8:30PM May 21, 2015Observed: 12.25 ft at 8:45PM May 21, 2015Observed: 12.28 ft at 9:00PM May 21, 2015Observed: 12.19 ft at 9:15PM May 21, 2015Observed: 12.22 ft at 9:30PM May 21, 2015Observed: 12.22 ft at 9:45PM May 21, 2015Observed: 12.22 ft at 10:00PM May 21, 2015Observed: 12.23 ft at 10:15PM May 21, 2015Observed: 12.08 ft at 10:30PM May 21, 2015Observed: 12.22 ft at 10:45PM May 21, 2015Observed: 12.11 ft at 11:00PM May 21, 2015Observed: 12.22 ft at 11:15PM May 21, 2015Observed: 12.19 ft at 11:30PM May 21, 2015Observed: 12.2 ft at 11:45PM May 21, 2015Observed: 12.19 ft at 12:00AM May 22, 2015Observed: 12.11 ft at 12:15AM May 22, 2015Observed: 12.16 ft at 12:30AM May 22, 2015Observed: 12.14 ft at 12:45AM May 22, 2015Observed: 12.15 ft at 1:00AM May 22, 2015Observed: 12.17 ft at 1:15AM May 22, 2015Observed: 12.17 ft at 1:30AM May 22, 2015Observed: 12.14 ft at 1:45AM May 22, 2015Observed: 12.11 ft at 2:00AM May 22, 2015Observed: 12.12 ft at 2:15AM May 22, 2015Observed: 12.1 ft at 2:30AM May 22, 2015Observed: 12.13 ft at 2:45AM May 22, 2015Observed: 12.06 ft at 3:00AM May 22, 2015Observed: 12.12 ft at 3:15AM May 22, 2015Observed: 12.13 ft at 3:30AM May 22, 2015Observed: 12.08 ft at 3:45AM May 22, 2015Observed: 12.09 ft at 4:00AM May 22, 2015Observed: 12.07 ft at 4:15AM May 22, 2015Observed: 12.07 ft at 4:30AM May 22, 2015Observed: 12.05 ft at 4:45AM May 22, 2015Observed: 12.06 ft at 5:00AM May 22, 2015Observed: 12.04 ft at 5:15AM May 22, 2015Observed: 12.05 ft at 5:30AM May 22, 2015Observed: 12.04 ft at 5:45AM May 22, 2015Observed: 12.01 ft at 6:00AM May 22, 2015Observed: 12.03 ft at 6:15AM May 22, 2015Observed: 11.99 ft at 6:30AM May 22, 2015Observed: 11.99 ft at 6:45AM May 22, 2015Observed: 11.96 ft at 7:00AM May 22, 2015Observed: 11.97 ft at 7:15AM May 22, 2015Observed: 11.97 ft at 7:30AM May 22, 2015Observed: 11.97 ft at 7:45AM May 22, 2015Observed: 11.96 ft at 8:00AM May 22, 2015Observed: 11.96 ft at 8:15AM May 22, 2015Observed: 11.93 ft at 8:30AM May 22, 2015Observed: 11.93 ft at 8:45AM May 22, 2015Observed: 11.93 ft at 9:00AM May 22, 2015Observed: 11.9 ft at 9:15AM May 22, 2015Observed: 11.9 ft at 9:30AM May 22, 2015Observed: 11.85 ft at 9:45AM May 22, 2015Observed: 11.96 ft at 10:00AM May 22, 2015Observed: 11.89 ft at 10:15AM May 22, 2015Observed: 11.92 ft at 10:30AM May 22, 2015Observed: 11.89 ft at 10:45AM May 22, 2015Observed: 11.88 ft at 11:00AM May 22, 2015Observed: 11.88 ft at 11:15AM May 22, 2015Observed: 11.83 ft at 11:30AM May 22, 2015Observed: 11.85 ft at 11:45AM May 22, 2015Observed: 11.86 ft at 12:00PM May 22, 2015Observed: 11.88 ft at 12:15PM May 22, 2015Observed: 11.83 ft at 12:30PM May 22, 2015Observed: 11.87 ft at 12:45PM May 22, 2015Observed: 11.83 ft at 1:00PM May 22, 2015Observed: 11.82 ft at 1:15PM May 22, 2015Observed: 11.89 ft at 1:30PM May 22, 2015Observed: 11.83 ft at 1:45PM May 22, 2015Observed: 11.78 ft at 2:00PM May 22, 2015Observed: 11.84 ft at 2:15PM May 22, 2015Observed: 11.82 ft at 2:30PM May 22, 2015Observed: 11.84 ft at 2:45PM May 22, 2015Observed: 11.83 ft at 3:00PM May 22, 2015Observed: 11.83 ft at 3:15PM May 22, 2015Observed: 11.84 ft at 3:30PM May 22, 2015Observed: 11.91 ft at 3:45PM May 22, 2015Observed: 11.89 ft at 4:00PM May 22, 2015Observed: 11.83 ft at 4:15PM May 22, 2015Observed: 11.75 ft at 4:30PM May 22, 2015Observed: 11.79 ft at 4:45PM May 22, 2015Observed: 11.78 ft at 5:00PM May 22, 2015Observed: 11.79 ft at 5:15PM May 22, 2015Observed: 11.66 ft at 5:30PM May 22, 2015Observed: 11.79 ft at 5:45PM May 22, 2015Observed: 11.82 ft at 6:00PM May 22, 2015Observed: 11.89 ft at 6:15PM May 22, 2015Observed: 11.82 ft at 6:30PM May 22, 2015Observed: 11.82 ft at 6:45PM May 22, 2015Observed: 11.83 ft at 7:00PM May 22, 2015Observed: 11.8 ft at 7:15PM May 22, 2015Observed: 11.8 ft at 7:30PM May 22, 2015Observed: 11.93 ft at 7:45PM May 22, 2015Observed: 11.97 ft at 8:00PM May 22, 2015Observed: 11.93 ft at 8:15PM May 22, 2015Observed: 11.97 ft at 8:30PM May 22, 2015Observed: 12.02 ft at 8:45PM May 22, 2015Observed: 12 ft at 9:00PM May 22, 2015Observed: 12 ft at 9:15PM May 22, 2015Observed: 12.08 ft at 9:30PM May 22, 2015Observed: 12.1 ft at 9:45PM May 22, 2015Highest Forecast: 12 ft 2:00AM May 23, 2015Highest Forecast: 12 ft 8:00AM May 23, 2015Highest Forecast: 12 ft 2:00PM May 23, 2015Highest Forecast: 12 ft 8:00PM May 23, 2015Highest Forecast: 12 ft 2:00AM May 24, 2015Highest Forecast: 12 ft 8:00AM May 24, 2015Highest Forecast: 12 ft 2:00PM May 24, 2015Highest Forecast: 12 ft 8:00PM May 24, 2015Highest Forecast: 12 ft 2:00AM May 25, 2015Highest Forecast: 12 ft 8:00AM May 25, 2015Highest Forecast: 12 ft 2:00PM May 25, 2015Forecast: 11.9 ft 8:00PM May 25, 2015Highest Forecast: 12 ft 2:00AM May 26, 2015Highest Forecast: 12 ft 8:00AM May 26, 2015Forecast: 11.9 ft 2:00PM May 26, 2015Forecast: 11.9 ft 8:00PM May 26, 2015Forecast: 11.9 ft 2:00AM May 27, 2015Highest Forecast: 12 ft 8:00AM May 27, 2015Forecast: 11.9 ft 2:00PM May 27, 2015Forecast: 11.9 ft 8:00PM May 27, 2015USGS--Water Resources of the United StatesBDDP1(plotting HPIRG) Graph Created (10:31PM May 22, 2015)ObservedForecast (issued 9:21PM May 22)Latest observed value: 12.1 ft at 9:45 PM EDT 22-May-2015. Flood Stage is 22 ft
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Metadata
NOTE: 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.

NOTE: Forecasts for the Monongahela River at Braddock Lock and Dam are issued routinely year-round.

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Upstream Gauge - at Elizabeth Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Pittsburgh
Flood Categories (in feet)
Major Flood Stage: 24
Moderate Flood Stage: 23
Flood Stage: 22
Action Stage: 18.2
Low Stage (in feet): 0

Historic Crests
(1) 35.30 ft on 03/18/1936
(2) 29.70 ft on 06/24/1972
(3) 29.10 ft on 01/20/1996
(4) 28.60 ft on 11/06/1985
(5) 28.20 ft on 10/16/1954
(6) 27.10 ft on 12/30/1942
(7) 24.20 ft on 02/20/2000
(8) 23.10 ft on 11/20/2003
(9) 22.00 ft on 02/10/1994
(10) 22.00 ft on 12/19/1990
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 21.71 ft on 03/05/2015
(2) 21.40 ft on 01/06/2005
(3) 20.70 ft on 09/18/2004
(4) 21.30 ft on 03/07/2004
(5) 21.40 ft on 02/07/2004
(6) 23.10 ft on 11/20/2003
(7) 20.90 ft on 02/24/2003
(8) 20.30 ft on 03/21/2002
(9) 24.20 ft on 02/20/2000
(10) 29.10 ft on 01/20/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 9.00 ft on 01/01/1901

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:15
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Gauge LocationGauge Map Marker
Disclaimer
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
29 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 Severe flooding occurs at communities of Braddock, Dravosburg, Rankin and others.
24.8 Thirty homes along Route 837 in Dravosburg flood.
24 Sewers back up in McKeesport along Market, 12th and 13th streets affecting the Riverside Senior Care Center, Kane Hospital and Isbir Manor.
23 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 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 Lock walls overtopped.
19 Navigation suspended, lock out of service.
About This Location Collapse

Latitude: 40.392500° N, Longitude: 79.860278° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 22 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 709.7 ft 731.7 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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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: 12-Feb-2015 9:34 PM
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