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Hydrograph River at a Glance Download
Monongahela River at Grays Landing Lock and Dam Pool (ft)Flow (kcfs)Observed: 11.12 ft at 6:15AM Apr 16, 2014Observed: 11.36 ft at 6:30AM Apr 16, 2014Observed: 11.5 ft at 6:45AM Apr 16, 2014Observed: 11.6 ft at 7:00AM Apr 16, 2014Observed: 11.74 ft at 7:15AM Apr 16, 2014Observed: 11.84 ft at 7:30AM Apr 16, 2014Observed: 11.93 ft at 7:45AM Apr 16, 2014Observed: 12.02 ft at 8:00AM Apr 16, 2014Observed: 12.07 ft at 8:15AM Apr 16, 2014Observed: 12.13 ft at 8:30AM Apr 16, 2014Observed: 12.18 ft at 8:45AM Apr 16, 2014Observed: 12.21 ft at 9:00AM Apr 16, 2014Observed: 12.23 ft at 9:15AM Apr 16, 2014Observed: 12.27 ft at 9:30AM Apr 16, 2014Observed: 12.31 ft at 9:45AM Apr 16, 2014Observed: 12.33 ft at 10:00AM Apr 16, 2014Observed: 12.35 ft at 10:15AM Apr 16, 2014Highest Observation: 12.37 ft at 10:30AM Apr 16, 2014Observed: 12.33 ft at 10:45AM Apr 16, 2014Observed: 12.18 ft at 11:00AM Apr 16, 2014Observed: 12.06 ft at 11:15AM Apr 16, 2014Observed: 12.01 ft at 11:30AM Apr 16, 2014Observed: 11.96 ft at 11:45AM Apr 16, 2014Observed: 11.92 ft at 12:00PM Apr 16, 2014Observed: 11.85 ft at 12:15PM Apr 16, 2014Observed: 11.82 ft at 12:30PM Apr 16, 2014Observed: 11.78 ft at 12:45PM Apr 16, 2014Observed: 11.74 ft at 1:00PM Apr 16, 2014Observed: 11.71 ft at 1:15PM Apr 16, 2014Observed: 11.68 ft at 1:30PM Apr 16, 2014Observed: 11.64 ft at 1:45PM Apr 16, 2014Observed: 11.61 ft at 2:00PM Apr 16, 2014Observed: 11.58 ft at 2:15PM Apr 16, 2014Observed: 11.55 ft at 2:30PM Apr 16, 2014Observed: 11.55 ft at 2:45PM Apr 16, 2014Observed: 11.52 ft at 3:00PM Apr 16, 2014Observed: 11.52 ft at 3:15PM Apr 16, 2014Observed: 11.49 ft at 3:30PM Apr 16, 2014Observed: 11.48 ft at 3:45PM Apr 16, 2014Observed: 11.47 ft at 4:00PM Apr 16, 2014Observed: 11.46 ft at 4:15PM Apr 16, 2014Observed: 11.44 ft at 4:30PM Apr 16, 2014Observed: 11.44 ft at 4:45PM Apr 16, 2014Observed: 11.43 ft at 5:00PM Apr 16, 2014Observed: 11.42 ft at 5:15PM Apr 16, 2014Observed: 11.42 ft at 5:30PM Apr 16, 2014Observed: 11.41 ft at 5:45PM Apr 16, 2014Observed: 11.4 ft at 6:00PM Apr 16, 2014Observed: 11.4 ft at 6:15PM Apr 16, 2014Observed: 11.4 ft at 6:30PM Apr 16, 2014Observed: 11.39 ft at 6:45PM Apr 16, 2014Observed: 11.54 ft at 7:00PM Apr 16, 2014Observed: 11.73 ft at 7:15PM Apr 16, 2014Observed: 11.8 ft at 7:30PM Apr 16, 2014Observed: 11.86 ft at 7:45PM Apr 16, 2014Observed: 11.96 ft at 8:00PM Apr 16, 2014Observed: 12.04 ft at 8:15PM Apr 16, 2014Observed: 12.1 ft at 8:30PM Apr 16, 2014Observed: 12.15 ft at 8:45PM Apr 16, 2014Observed: 12.21 ft at 9:00PM Apr 16, 2014Observed: 12.23 ft at 9:15PM Apr 16, 2014Observed: 12.28 ft at 9:30PM Apr 16, 2014Observed: 12.31 ft at 9:45PM Apr 16, 2014Observed: 12.32 ft at 10:00PM Apr 16, 2014Observed: 12.34 ft at 10:15PM Apr 16, 2014Observed: 12.33 ft at 10:30PM Apr 16, 2014Observed: 12.3 ft at 10:45PM Apr 16, 2014Observed: 12.08 ft at 11:00PM Apr 16, 2014Observed: 11.84 ft at 11:15PM Apr 16, 2014Observed: 11.76 ft at 11:30PM Apr 16, 2014Observed: 11.67 ft at 11:45PM Apr 16, 2014Observed: 11.56 ft at 12:00AM Apr 17, 2014Observed: 11.51 ft at 12:15AM Apr 17, 2014Observed: 11.41 ft at 12:30AM Apr 17, 2014Observed: 11.33 ft at 12:45AM Apr 17, 2014Observed: 11.22 ft at 1:00AM Apr 17, 2014Observed: 11.16 ft at 1:15AM Apr 17, 2014Observed: 11.16 ft at 1:30AM Apr 17, 2014Observed: 11.09 ft at 1:45AM Apr 17, 2014Observed: 11.04 ft at 2:00AM Apr 17, 2014Observed: 10.97 ft at 2:15AM Apr 17, 2014Observed: 10.94 ft at 2:30AM Apr 17, 2014Observed: 10.89 ft at 2:45AM Apr 17, 2014Observed: 10.88 ft at 3:00AM Apr 17, 2014Observed: 10.84 ft at 3:15AM Apr 17, 2014Observed: 10.8 ft at 3:30AM Apr 17, 2014Observed: 10.76 ft at 3:45AM Apr 17, 2014Observed: 10.73 ft at 4:00AM Apr 17, 2014Observed: 10.72 ft at 4:15AM Apr 17, 2014Observed: 10.69 ft at 4:30AM Apr 17, 2014Observed: 10.67 ft at 4:45AM Apr 17, 2014Observed: 10.64 ft at 5:00AM Apr 17, 2014Observed: 10.62 ft at 5:15AM Apr 17, 2014Observed: 10.62 ft at 5:30AM Apr 17, 2014Observed: 10.59 ft at 5:45AM Apr 17, 2014Observed: 10.58 ft at 6:00AM Apr 17, 2014Observed: 10.57 ft at 6:15AM Apr 17, 2014Observed: 10.56 ft at 6:30AM Apr 17, 2014Observed: 10.55 ft at 6:45AM Apr 17, 2014Observed: 10.54 ft at 7:00AM Apr 17, 2014Observed: 10.53 ft at 7:15AM Apr 17, 2014Observed: 10.52 ft at 7:30AM Apr 17, 2014Observed: 10.51 ft at 7:45AM Apr 17, 2014Observed: 10.51 ft at 8:00AM Apr 17, 2014Observed: 10.49 ft at 8:15AM Apr 17, 2014Observed: 10.48 ft at 8:30AM Apr 17, 2014Observed: 10.48 ft at 8:45AM Apr 17, 2014Observed: 10.49 ft at 9:00AM Apr 17, 2014Observed: 10.48 ft at 9:15AM Apr 17, 2014Observed: 10.48 ft at 9:30AM Apr 17, 2014Observed: 10.47 ft at 9:45AM Apr 17, 2014Observed: 10.46 ft at 10:00AM Apr 17, 2014Observed: 10.47 ft at 10:15AM Apr 17, 2014Observed: 10.45 ft at 10:30AM Apr 17, 2014Observed: 10.46 ft at 10:45AM Apr 17, 2014Observed: 10.44 ft at 11:00AM Apr 17, 2014Observed: 10.44 ft at 11:15AM Apr 17, 2014Observed: 10.43 ft at 11:30AM Apr 17, 2014Observed: 10.43 ft at 11:45AM Apr 17, 2014Observed: 10.42 ft at 12:00PM Apr 17, 2014Observed: 10.41 ft at 12:15PM Apr 17, 2014Observed: 10.42 ft at 12:30PM Apr 17, 2014Observed: 10.41 ft at 12:45PM Apr 17, 2014Observed: 10.41 ft at 1:00PM Apr 17, 2014Observed: 10.4 ft at 1:15PM Apr 17, 2014Observed: 10.39 ft at 1:30PM Apr 17, 2014Observed: 10.4 ft at 1:45PM Apr 17, 2014Observed: 10.4 ft at 2:00PM Apr 17, 2014Observed: 10.4 ft at 2:15PM Apr 17, 2014Observed: 10.39 ft at 2:30PM Apr 17, 2014Observed: 10.39 ft at 2:45PM Apr 17, 2014Observed: 10.34 ft at 3:00PM Apr 17, 2014Observed: 10.33 ft at 3:15PM Apr 17, 2014Observed: 10.4 ft at 3:30PM Apr 17, 2014Observed: 10.61 ft at 3:45PM Apr 17, 2014Observed: 10.25 ft at 4:00PM Apr 17, 2014Observed: 10.44 ft at 4:15PM Apr 17, 2014Observed: 10.37 ft at 4:30PM Apr 17, 2014Observed: 10.34 ft at 4:45PM Apr 17, 2014Observed: 10.43 ft at 5:00PM Apr 17, 2014Observed: 10.42 ft at 5:15PM Apr 17, 2014Observed: 10.41 ft at 5:30PM Apr 17, 2014Observed: 10.47 ft at 5:45PM Apr 17, 2014Observed: 10.48 ft at 6:00PM Apr 17, 2014Observed: 10.38 ft at 6:15PM Apr 17, 2014Observed: 10.43 ft at 6:30PM Apr 17, 2014Observed: 10.5 ft at 6:45PM Apr 17, 2014Observed: 10.38 ft at 7:00PM Apr 17, 2014Observed: 10.48 ft at 7:15PM Apr 17, 2014Observed: 10.26 ft at 7:30PM Apr 17, 2014Observed: 10.3 ft at 7:45PM Apr 17, 2014Observed: 10.41 ft at 8:00PM Apr 17, 2014Observed: 10.41 ft at 8:15PM Apr 17, 2014Observed: 10.43 ft at 8:30PM Apr 17, 2014Observed: 10.38 ft at 8:45PM Apr 17, 2014Observed: 10.39 ft at 9:00PM Apr 17, 2014Observed: 10.43 ft at 9:15PM Apr 17, 2014Observed: 10.44 ft at 9:30PM Apr 17, 2014Observed: 10.36 ft at 9:45PM Apr 17, 2014Observed: 10.66 ft at 10:00PM Apr 17, 2014Observed: 10.33 ft at 10:15PM Apr 17, 2014Observed: 10.47 ft at 10:30PM Apr 17, 2014Observed: 10.46 ft at 10:45PM Apr 17, 2014Observed: 10.38 ft at 11:00PM Apr 17, 2014Observed: 10.43 ft at 11:15PM Apr 17, 2014Observed: 10.46 ft at 11:30PM Apr 17, 2014Observed: 10.41 ft at 11:45PM Apr 17, 2014Observed: 10.43 ft at 12:00AM Apr 18, 2014Observed: 10.47 ft at 12:15AM Apr 18, 2014Observed: 10.43 ft at 12:30AM Apr 18, 2014Observed: 10.48 ft at 12:45AM Apr 18, 2014Observed: 10.46 ft at 1:00AM Apr 18, 2014Observed: 10.46 ft at 1:15AM Apr 18, 2014Observed: 10.62 ft at 1:30AM Apr 18, 2014Observed: 10.48 ft at 1:45AM Apr 18, 2014Observed: 10.51 ft at 2:00AM Apr 18, 2014Observed: 10.48 ft at 2:15AM Apr 18, 2014Observed: 10.48 ft at 2:30AM Apr 18, 2014Observed: 10.44 ft at 2:45AM Apr 18, 2014Observed: 10.54 ft at 3:00AM Apr 18, 2014Observed: 10.54 ft at 3:15AM Apr 18, 2014Observed: 10.5 ft at 3:30AM Apr 18, 2014Observed: 10.52 ft at 3:45AM Apr 18, 2014Observed: 10.48 ft at 4:00AM Apr 18, 2014Observed: 10.51 ft at 4:15AM Apr 18, 2014Observed: 10.52 ft at 4:30AM Apr 18, 2014Observed: 10.51 ft at 4:45AM Apr 18, 2014Observed: 10.5 ft at 5:00AM Apr 18, 2014Observed: 10.56 ft at 5:15AM Apr 18, 2014Observed: 10.57 ft at 5:30AM Apr 18, 2014Observed: 10.5 ft at 5:45AM Apr 18, 2014Observed: 10.81 ft at 6:00AM Apr 18, 2014Observed: 11.16 ft at 6:15AM Apr 18, 2014Observed: 11.25 ft at 6:30AM Apr 18, 2014Observed: 11.6 ft at 6:45AM Apr 18, 2014Observed: 11.38 ft at 7:00AM Apr 18, 2014Observed: 11.53 ft at 7:15AM Apr 18, 2014Observed: 11.86 ft at 7:30AM Apr 18, 2014Observed: 11.67 ft at 7:45AM Apr 18, 2014Observed: 11.79 ft at 8:00AM Apr 18, 2014Observed: 11.82 ft at 8:15AM Apr 18, 2014Observed: 11.86 ft at 8:30AM Apr 18, 2014Observed: 11.91 ft at 8:45AM Apr 18, 2014Observed: 11.95 ft at 9:00AM Apr 18, 2014Observed: 11.98 ft at 9:15AM Apr 18, 2014Observed: 12 ft at 9:30AM Apr 18, 2014Observed: 12.04 ft at 9:45AM Apr 18, 2014Observed: 12.06 ft at 10:00AM Apr 18, 2014Observed: 12.09 ft at 10:15AM Apr 18, 2014Observed: 12.1 ft at 10:30AM Apr 18, 2014Observed: 12.12 ft at 10:45AM Apr 18, 2014Observed: 12.14 ft at 11:00AM Apr 18, 2014Observed: 12.16 ft at 11:15AM Apr 18, 2014Observed: 12.17 ft at 11:30AM Apr 18, 2014Observed: 12.17 ft at 11:45AM Apr 18, 2014Observed: 12.19 ft at 12:00PM Apr 18, 2014Observed: 12.19 ft at 12:15PM Apr 18, 2014Observed: 12.2 ft at 12:30PM Apr 18, 2014Observed: 12.21 ft at 12:45PM Apr 18, 2014Observed: 12.21 ft at 1:00PM Apr 18, 2014Observed: 12.22 ft at 1:15PM Apr 18, 2014Observed: 12.21 ft at 1:30PM Apr 18, 2014Observed: 12.17 ft at 1:45PM Apr 18, 2014Observed: 11.9 ft at 2:00PM Apr 18, 2014Observed: 11.66 ft at 2:15PM Apr 18, 2014Observed: 11.57 ft at 2:30PM Apr 18, 2014Observed: 11.51 ft at 2:45PM Apr 18, 2014Observed: 11.43 ft at 3:00PM Apr 18, 2014Observed: 11.32 ft at 3:15PM Apr 18, 2014Observed: 11.21 ft at 3:30PM Apr 18, 2014Observed: 11.13 ft at 3:45PM Apr 18, 2014Observed: 11.08 ft at 4:00PM Apr 18, 2014Observed: 11.03 ft at 4:15PM Apr 18, 2014Observed: 10.97 ft at 4:30PM Apr 18, 2014Observed: 10.92 ft at 4:45PM Apr 18, 2014Observed: 10.86 ft at 5:00PM Apr 18, 2014Observed: 10.82 ft at 5:15PM Apr 18, 2014Observed: 10.81 ft at 5:30PM Apr 18, 2014Observed: 10.77 ft at 5:45PM Apr 18, 2014Observed: 10.65 ft at 6:00PM Apr 18, 2014Observed: 10.64 ft at 6:15PM Apr 18, 2014Observed: 10.62 ft at 6:30PM Apr 18, 2014Observed: 10.57 ft at 6:45PM Apr 18, 2014Observed: 10.6 ft at 7:00PM Apr 18, 2014Observed: 10.51 ft at 7:15PM Apr 18, 2014Observed: 10.45 ft at 7:30PM Apr 18, 2014Observed: 10.48 ft at 7:45PM Apr 18, 2014Observed: 10.46 ft at 8:00PM Apr 18, 2014Observed: 10.45 ft at 8:15PM Apr 18, 2014Observed: 10.43 ft at 8:30PM Apr 18, 2014Observed: 10.39 ft at 8:45PM Apr 18, 2014Observed: 10.37 ft at 9:00PM Apr 18, 2014Observed: 10.38 ft at 9:15PM Apr 18, 2014Observed: 10.35 ft at 9:30PM Apr 18, 2014Observed: 10.34 ft at 9:45PM Apr 18, 2014Observed: 10.35 ft at 10:00PM Apr 18, 2014Observed: 10.34 ft at 10:15PM Apr 18, 2014Observed: 10.36 ft at 10:30PM Apr 18, 2014Observed: 10.35 ft at 10:45PM Apr 18, 2014Observed: 10.33 ft at 11:00PM Apr 18, 2014Observed: 10.19 ft at 11:15PM Apr 18, 2014Observed: 10.25 ft at 11:30PM Apr 18, 2014Observed: 10.32 ft at 11:45PM Apr 18, 2014Observed: 10.34 ft at 12:00AM Apr 19, 2014Observed: 10.35 ft at 12:15AM Apr 19, 2014Observed: 10.3 ft at 12:30AM Apr 19, 2014Observed: 10.26 ft at 12:45AM Apr 19, 2014Observed: 10.32 ft at 1:00AM Apr 19, 2014Observed: 10.34 ft at 1:15AM Apr 19, 2014Observed: 10.32 ft at 1:30AM Apr 19, 2014Observed: 10.32 ft at 1:45AM Apr 19, 2014Observed: 10.29 ft at 2:00AM Apr 19, 2014Observed: 10.3 ft at 2:15AM Apr 19, 2014Observed: 10.3 ft at 2:30AM Apr 19, 2014Observed: 10.3 ft at 2:45AM Apr 19, 2014Observed: 10.3 ft at 3:00AM Apr 19, 2014Observed: 10.3 ft at 3:15AM Apr 19, 2014Observed: 10.3 ft at 3:30AM Apr 19, 2014Observed: 10.3 ft at 3:45AM Apr 19, 2014Observed: 10.31 ft at 4:00AM Apr 19, 2014Observed: 10.29 ft at 4:15AM Apr 19, 2014Observed: 10.29 ft at 4:30AM Apr 19, 2014Observed: 10.29 ft at 4:45AM Apr 19, 2014Observed: 10.3 ft at 5:00AM Apr 19, 2014Observed: 10.31 ft at 5:15AM Apr 19, 2014Observed: 10.3 ft at 5:30AM Apr 19, 2014Observed: 10.3 ft at 5:45AM Apr 19, 2014Highest Forecast: 10.6 ft 8:00AM Apr 19, 2014Forecast: 10.3 ft 2:00PM Apr 19, 2014Forecast: 10.3 ft 8:00PM Apr 19, 2014Forecast: 10.2 ft 2:00AM Apr 20, 2014Forecast: 10.2 ft 8:00AM Apr 20, 2014Forecast: 10.2 ft 2:00PM Apr 20, 2014Forecast: 10.2 ft 8:00PM Apr 20, 2014Forecast: 10.2 ft 2:00AM Apr 21, 2014Forecast: 10.1 ft 8:00AM Apr 21, 2014Forecast: 9.9 ft 2:00PM Apr 21, 2014Forecast: 9.8 ft 8:00PM Apr 21, 2014Forecast: 9.8 ft 2:00AM Apr 22, 2014Forecast: 9.9 ft 8:00AM Apr 22, 2014Forecast: 10.1 ft 2:00PM Apr 22, 2014Forecast: 10.4 ft 8:00PM Apr 22, 2014Forecast: 10.1 ft 2:00AM Apr 23, 2014Forecast: 10 ft 8:00AM Apr 23, 2014Forecast: 10.1 ft 2:00PM Apr 23, 2014Forecast: 10.4 ft 8:00PM Apr 23, 2014USGS--Water Resources of the United StatesGYLP1(plotting HPIRG) Graph Created (6:02AM Apr 19, 2014)ObservedForecast (issued 1:01AM Apr 19)Latest observed value: 10.3 ft at 5:45 AM EDT 19-Apr-2014. Flood Stage is 21 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
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 Grays Landing Lock and Dam are issued routinely year-round.

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Upstream Gauge - at Point Marion Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Maxwell Lock and Dam
Flood Categories (in feet)
Major Flood Stage:27
Moderate Flood Stage:25
Flood Stage:21
Action Stage:15

Historical Crests
(1) 36.00 ft on 07/01/1888
(2) 28.40 ft on 03/18/1936
(3) 25.80 ft on 01/20/1996
(4) 24.50 ft on 02/19/2000
(5) 21.70 ft on 12/14/2007
(6) 21.37 ft on 12/14/2007
(7) 21.00 ft on 05/04/2009
(8) 20.70 ft on 03/21/2002
(9) 20.60 ft on 01/26/2010
(10) 20.09 ft on 11/23/2011
Show More Historical Crests

Low Water Records
(1) 0.00 ft on 01/01/1980
Zoom Level: 16
Gauge Location
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
35 Flood waters reach the Historic Log Cabin along Front Street in Greensboro
34 Flood waters reach the corner of Front and County Streets in Greensboro
31 Flood waters reach the Bed and Breakfast on County Street in Greensboro
25 Flood waters reach Martin Ferry Road in the Village of Glasworks
24 The lock walls are overtopped at Grays Landing Lock and Dam
21 The lock at Grays Landing Lock and Dam goes out of service...and navigation is suspended
19 The bike trail floods in Greensboro near County Street
About This Location Collapse

Latitude: 39.825000° N, Longitude: 79.923056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 21 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 769 ft 790 ft  

Current/Historical Observations:

Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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: 8-Apr-2014 8:38 AM
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