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Hydrograph River at a Glance Download
Monongahela River at Grays Landing Lock and Dam Pool (ft)Flow (kcfs)Observed: 12.18 ft at 6:15AM May 01, 2015Observed: 12.21 ft at 6:30AM May 01, 2015Observed: 12.24 ft at 6:45AM May 01, 2015Observed: 12.27 ft at 7:00AM May 01, 2015Observed: 12.28 ft at 7:15AM May 01, 2015Observed: 12.3 ft at 7:30AM May 01, 2015Observed: 12.32 ft at 7:45AM May 01, 2015Observed: 12.32 ft at 8:00AM May 01, 2015Observed: 12.34 ft at 8:15AM May 01, 2015Highest Observation: 12.35 ft at 8:30AM May 01, 2015Observed: 12.34 ft at 8:45AM May 01, 2015Observed: 12.32 ft at 9:00AM May 01, 2015Observed: 12.26 ft at 9:15AM May 01, 2015Observed: 12.23 ft at 9:30AM May 01, 2015Observed: 12.22 ft at 9:45AM May 01, 2015Observed: 12.21 ft at 10:00AM May 01, 2015Observed: 12.22 ft at 10:15AM May 01, 2015Observed: 12.22 ft at 10:30AM May 01, 2015Observed: 12.16 ft at 10:45AM May 01, 2015Observed: 12.08 ft at 11:00AM May 01, 2015Observed: 12.02 ft at 11:15AM May 01, 2015Observed: 11.98 ft at 11:30AM May 01, 2015Observed: 11.96 ft at 11:45AM May 01, 2015Observed: 11.94 ft at 12:00PM May 01, 2015Observed: 11.9 ft at 12:15PM May 01, 2015Observed: 11.78 ft at 12:30PM May 01, 2015Observed: 11.71 ft at 12:45PM May 01, 2015Observed: 11.67 ft at 1:00PM May 01, 2015Observed: 11.65 ft at 1:15PM May 01, 2015Observed: 11.6 ft at 1:30PM May 01, 2015Observed: 11.57 ft at 1:45PM May 01, 2015Observed: 11.55 ft at 2:00PM May 01, 2015Observed: 11.52 ft at 2:15PM May 01, 2015Observed: 11.5 ft at 2:30PM May 01, 2015Observed: 11.46 ft at 2:45PM May 01, 2015Observed: 11.44 ft at 3:00PM May 01, 2015Observed: 11.43 ft at 3:15PM May 01, 2015Observed: 11.41 ft at 3:30PM May 01, 2015Observed: 11.41 ft at 3:45PM May 01, 2015Observed: 11.38 ft at 4:00PM May 01, 2015Observed: 11.37 ft at 4:15PM May 01, 2015Observed: 11.34 ft at 4:30PM May 01, 2015Observed: 11.45 ft at 4:45PM May 01, 2015Observed: 11.33 ft at 5:00PM May 01, 2015Observed: 11.44 ft at 5:15PM May 01, 2015Observed: 11.42 ft at 5:30PM May 01, 2015Observed: 11.33 ft at 5:45PM May 01, 2015Observed: 11.43 ft at 6:00PM May 01, 2015Observed: 11.41 ft at 6:15PM May 01, 2015Observed: 11.4 ft at 6:30PM May 01, 2015Observed: 11.39 ft at 6:45PM May 01, 2015Observed: 11.39 ft at 7:00PM May 01, 2015Observed: 11.4 ft at 7:15PM May 01, 2015Observed: 11.39 ft at 7:30PM May 01, 2015Observed: 11.4 ft at 7:45PM May 01, 2015Observed: 11.39 ft at 8:00PM May 01, 2015Observed: 11.37 ft at 8:15PM May 01, 2015Observed: 11.38 ft at 8:30PM May 01, 2015Observed: 11.41 ft at 8:45PM May 01, 2015Observed: 11.42 ft at 9:00PM May 01, 2015Observed: 11.45 ft at 9:15PM May 01, 2015Observed: 11.47 ft at 9:30PM May 01, 2015Observed: 11.47 ft at 9:45PM May 01, 2015Observed: 11.48 ft at 10:00PM May 01, 2015Observed: 11.49 ft at 10:15PM May 01, 2015Observed: 11.51 ft at 10:30PM May 01, 2015Observed: 11.52 ft at 10:45PM May 01, 2015Observed: 11.52 ft at 11:00PM May 01, 2015Observed: 11.53 ft at 11:15PM May 01, 2015Observed: 11.53 ft at 11:30PM May 01, 2015Observed: 11.53 ft at 11:45PM May 01, 2015Observed: 11.55 ft at 12:00AM May 02, 2015Observed: 11.55 ft at 12:15AM May 02, 2015Observed: 11.54 ft at 12:30AM May 02, 2015Observed: 11.56 ft at 12:45AM May 02, 2015Observed: 11.48 ft at 1:00AM May 02, 2015Observed: 11.4 ft at 1:15AM May 02, 2015Observed: 11.37 ft at 1:30AM May 02, 2015Observed: 11.33 ft at 1:45AM May 02, 2015Observed: 11.29 ft at 2:00AM May 02, 2015Observed: 11.25 ft at 2:15AM May 02, 2015Observed: 11.21 ft at 2:30AM May 02, 2015Observed: 11.18 ft at 2:45AM May 02, 2015Observed: 11.16 ft at 3:00AM May 02, 2015Observed: 11.13 ft at 3:15AM May 02, 2015Observed: 11.11 ft at 3:30AM May 02, 2015Observed: 11.08 ft at 3:45AM May 02, 2015Observed: 11.05 ft at 4:00AM May 02, 2015Observed: 11.02 ft at 4:15AM May 02, 2015Observed: 11.02 ft at 4:30AM May 02, 2015Observed: 10.99 ft at 4:45AM May 02, 2015Observed: 10.99 ft at 5:00AM May 02, 2015Observed: 10.98 ft at 5:15AM May 02, 2015Observed: 10.96 ft at 5:30AM May 02, 2015Observed: 10.95 ft at 5:45AM May 02, 2015Observed: 10.93 ft at 6:00AM May 02, 2015Observed: 10.93 ft at 6:15AM May 02, 2015Observed: 10.93 ft at 6:30AM May 02, 2015Observed: 10.91 ft at 6:45AM May 02, 2015Observed: 11.07 ft at 7:00AM May 02, 2015Observed: 11.32 ft at 7:15AM May 02, 2015Observed: 11.38 ft at 7:30AM May 02, 2015Observed: 11.43 ft at 7:45AM May 02, 2015Observed: 11.48 ft at 8:00AM May 02, 2015Observed: 11.55 ft at 8:15AM May 02, 2015Observed: 11.45 ft at 8:30AM May 02, 2015Observed: 11.73 ft at 8:45AM May 02, 2015Observed: 11.71 ft at 9:00AM May 02, 2015Observed: 11.76 ft at 9:15AM May 02, 2015Observed: 11.78 ft at 9:30AM May 02, 2015Observed: 11.81 ft at 9:45AM May 02, 2015Observed: 11.82 ft at 10:00AM May 02, 2015Observed: 11.83 ft at 10:15AM May 02, 2015Observed: 11.84 ft at 10:30AM May 02, 2015Observed: 11.84 ft at 10:45AM May 02, 2015Observed: 11.83 ft at 11:00AM May 02, 2015Observed: 11.84 ft at 11:15AM May 02, 2015Observed: 11.83 ft at 11:30AM May 02, 2015Observed: 11.82 ft at 11:45AM May 02, 2015Observed: 11.62 ft at 12:00PM May 02, 2015Observed: 11.44 ft at 12:15PM May 02, 2015Observed: 11.37 ft at 12:30PM May 02, 2015Observed: 11.32 ft at 12:45PM May 02, 2015Observed: 11.27 ft at 1:00PM May 02, 2015Observed: 11.2 ft at 1:15PM May 02, 2015Observed: 10.94 ft at 1:30PM May 02, 2015Observed: 11.05 ft at 1:45PM May 02, 2015Observed: 10.97 ft at 2:00PM May 02, 2015Observed: 10.92 ft at 2:15PM May 02, 2015Observed: 10.9 ft at 2:30PM May 02, 2015Observed: 11.03 ft at 2:45PM May 02, 2015Observed: 10.73 ft at 3:00PM May 02, 2015Observed: 10.86 ft at 3:15PM May 02, 2015Observed: 10.78 ft at 3:30PM May 02, 2015Observed: 10.7 ft at 3:45PM May 02, 2015Observed: 10.73 ft at 4:00PM May 02, 2015Observed: 10.7 ft at 4:15PM May 02, 2015Observed: 10.65 ft at 4:30PM May 02, 2015Observed: 10.63 ft at 4:45PM May 02, 2015Observed: 10.61 ft at 5:00PM May 02, 2015Observed: 10.59 ft at 5:15PM May 02, 2015Observed: 10.59 ft at 5:30PM May 02, 2015Observed: 10.57 ft at 5:45PM May 02, 2015Observed: 10.7 ft at 6:00PM May 02, 2015Observed: 11.24 ft at 6:15PM May 02, 2015Observed: 11.13 ft at 6:30PM May 02, 2015Observed: 11.24 ft at 6:45PM May 02, 2015Observed: 11.32 ft at 7:00PM May 02, 2015Observed: 11.4 ft at 7:15PM May 02, 2015Observed: 11.6 ft at 7:30PM May 02, 2015Observed: 11.63 ft at 7:45PM May 02, 2015Observed: 11.96 ft at 8:00PM May 02, 2015Observed: 11.67 ft at 8:15PM May 02, 2015Observed: 11.77 ft at 8:30PM May 02, 2015Observed: 11.88 ft at 8:45PM May 02, 2015Observed: 11.9 ft at 9:00PM May 02, 2015Observed: 11.92 ft at 9:15PM May 02, 2015Observed: 11.79 ft at 9:30PM May 02, 2015Observed: 11.6 ft at 9:45PM May 02, 2015Observed: 11.54 ft at 10:00PM May 02, 2015Observed: 11.5 ft at 10:15PM May 02, 2015Observed: 11.46 ft at 10:30PM May 02, 2015Observed: 11.41 ft at 10:45PM May 02, 2015Observed: 11.32 ft at 11:00PM May 02, 2015Observed: 11.26 ft at 11:15PM May 02, 2015Observed: 11.27 ft at 11:30PM May 02, 2015Observed: 11.28 ft at 11:45PM May 02, 2015Observed: 11.22 ft at 12:00AM May 03, 2015Observed: 11.14 ft at 12:15AM May 03, 2015Observed: 11.11 ft at 12:30AM May 03, 2015Observed: 11.1 ft at 12:45AM May 03, 2015Observed: 11.08 ft at 1:00AM May 03, 2015Observed: 11.07 ft at 1:15AM May 03, 2015Observed: 11.05 ft at 1:30AM May 03, 2015Observed: 11.03 ft at 1:45AM May 03, 2015Observed: 11.02 ft at 2:00AM May 03, 2015Observed: 11 ft at 2:15AM May 03, 2015Observed: 11 ft at 2:30AM May 03, 2015Observed: 10.98 ft at 2:45AM May 03, 2015Observed: 10.96 ft at 3:00AM May 03, 2015Observed: 10.96 ft at 3:15AM May 03, 2015Observed: 10.96 ft at 3:30AM May 03, 2015Observed: 10.72 ft at 3:45AM May 03, 2015Observed: 11.02 ft at 4:00AM May 03, 2015Observed: 10.95 ft at 4:15AM May 03, 2015Observed: 10.94 ft at 4:30AM May 03, 2015Observed: 10.91 ft at 4:45AM May 03, 2015Observed: 10.87 ft at 5:00AM May 03, 2015Observed: 10.84 ft at 5:15AM May 03, 2015Observed: 10.83 ft at 5:30AM May 03, 2015Observed: 10.83 ft at 5:45AM May 03, 2015Observed: 10.8 ft at 6:00AM May 03, 2015Observed: 10.86 ft at 6:15AM May 03, 2015Observed: 10.83 ft at 6:30AM May 03, 2015Observed: 10.8 ft at 6:45AM May 03, 2015Observed: 10.95 ft at 7:00AM May 03, 2015Observed: 11.24 ft at 7:15AM May 03, 2015Observed: 11.28 ft at 7:30AM May 03, 2015Observed: 11.35 ft at 7:45AM May 03, 2015Observed: 11.4 ft at 8:00AM May 03, 2015Observed: 11.45 ft at 8:15AM May 03, 2015Observed: 11.55 ft at 8:30AM May 03, 2015Observed: 11.61 ft at 8:45AM May 03, 2015Observed: 11.65 ft at 9:00AM May 03, 2015Observed: 11.69 ft at 9:15AM May 03, 2015Observed: 11.68 ft at 9:30AM May 03, 2015Observed: 11.75 ft at 9:45AM May 03, 2015Observed: 11.78 ft at 10:00AM May 03, 2015Observed: 11.77 ft at 10:15AM May 03, 2015Observed: 11.82 ft at 10:30AM May 03, 2015Observed: 11.82 ft at 10:45AM May 03, 2015Observed: 11.66 ft at 11:00AM May 03, 2015Observed: 11.5 ft at 11:15AM May 03, 2015Observed: 11.42 ft at 11:30AM May 03, 2015Observed: 11.35 ft at 11:45AM May 03, 2015Observed: 11.29 ft at 12:00PM May 03, 2015Observed: 11.23 ft at 12:15PM May 03, 2015Observed: 11.17 ft at 12:30PM May 03, 2015Observed: 11.07 ft at 12:45PM May 03, 2015Observed: 11.04 ft at 1:00PM May 03, 2015Observed: 11.01 ft at 1:15PM May 03, 2015Observed: 10.85 ft at 1:30PM May 03, 2015Observed: 10.95 ft at 1:45PM May 03, 2015Observed: 10.88 ft at 2:00PM May 03, 2015Observed: 10.86 ft at 2:15PM May 03, 2015Observed: 10.85 ft at 2:30PM May 03, 2015Observed: 10.76 ft at 2:45PM May 03, 2015Observed: 10.79 ft at 3:00PM May 03, 2015Observed: 10.67 ft at 3:15PM May 03, 2015Observed: 10.68 ft at 3:30PM May 03, 2015Observed: 10.71 ft at 3:45PM May 03, 2015Observed: 10.71 ft at 4:00PM May 03, 2015Observed: 10.62 ft at 4:15PM May 03, 2015Observed: 10.64 ft at 4:30PM May 03, 2015Observed: 10.72 ft at 4:45PM May 03, 2015Observed: 10.72 ft at 5:00PM May 03, 2015Observed: 10.66 ft at 5:15PM May 03, 2015Observed: 10.64 ft at 5:30PM May 03, 2015Observed: 10.64 ft at 5:45PM May 03, 2015Observed: 10.83 ft at 6:00PM May 03, 2015Observed: 11.04 ft at 6:15PM May 03, 2015Observed: 11.11 ft at 6:30PM May 03, 2015Observed: 11.18 ft at 6:45PM May 03, 2015Observed: 11.23 ft at 7:00PM May 03, 2015Observed: 11.31 ft at 7:15PM May 03, 2015Observed: 11.41 ft at 7:30PM May 03, 2015Observed: 11.47 ft at 7:45PM May 03, 2015Observed: 11.51 ft at 8:00PM May 03, 2015Observed: 11.53 ft at 8:15PM May 03, 2015Observed: 11.62 ft at 8:30PM May 03, 2015Observed: 11.68 ft at 8:45PM May 03, 2015Observed: 11.49 ft at 9:00PM May 03, 2015Observed: 11.29 ft at 9:15PM May 03, 2015Observed: 11.25 ft at 9:30PM May 03, 2015Observed: 11.22 ft at 9:45PM May 03, 2015Observed: 11.19 ft at 10:00PM May 03, 2015Observed: 11.14 ft at 10:15PM May 03, 2015Observed: 10.99 ft at 10:30PM May 03, 2015Observed: 11 ft at 10:45PM May 03, 2015Observed: 10.98 ft at 11:00PM May 03, 2015Observed: 10.99 ft at 11:15PM May 03, 2015Observed: 10.95 ft at 11:30PM May 03, 2015Observed: 10.89 ft at 11:45PM May 03, 2015Observed: 10.86 ft at 12:00AM May 04, 2015Observed: 10.86 ft at 12:15AM May 04, 2015Observed: 10.84 ft at 12:30AM May 04, 2015Observed: 10.83 ft at 12:45AM May 04, 2015Observed: 10.82 ft at 1:00AM May 04, 2015Observed: 10.79 ft at 1:15AM May 04, 2015Observed: 10.78 ft at 1:30AM May 04, 2015Observed: 10.78 ft at 1:45AM May 04, 2015Observed: 10.78 ft at 2:00AM May 04, 2015Observed: 10.77 ft at 2:15AM May 04, 2015Observed: 10.75 ft at 2:30AM May 04, 2015Observed: 10.75 ft at 2:45AM May 04, 2015Observed: 10.74 ft at 3:00AM May 04, 2015Observed: 10.74 ft at 3:15AM May 04, 2015Observed: 10.73 ft at 3:30AM May 04, 2015Observed: 10.73 ft at 3:45AM May 04, 2015Observed: 10.72 ft at 4:00AM May 04, 2015Observed: 10.73 ft at 4:15AM May 04, 2015Observed: 10.73 ft at 4:30AM May 04, 2015Observed: 10.72 ft at 4:45AM May 04, 2015Observed: 10.77 ft at 5:00AM May 04, 2015Observed: 10.71 ft at 5:15AM May 04, 2015Observed: 10.71 ft at 5:30AM May 04, 2015Observed: 10.73 ft at 5:45AM May 04, 2015Forecast: 10.8 ft 8:00AM May 04, 2015Forecast: 10.9 ft 2:00PM May 04, 2015Highest Forecast: 11.3 ft 8:00PM May 04, 2015Forecast: 10.9 ft 2:00AM May 05, 2015Forecast: 10.7 ft 8:00AM May 05, 2015Forecast: 10.8 ft 2:00PM May 05, 2015Forecast: 11.1 ft 8:00PM May 05, 2015Forecast: 10.6 ft 2:00AM May 06, 2015Forecast: 10.4 ft 8:00AM May 06, 2015Forecast: 10.5 ft 2:00PM May 06, 2015Forecast: 10.9 ft 8:00PM May 06, 2015Forecast: 10.5 ft 2:00AM May 07, 2015Forecast: 10.3 ft 8:00AM May 07, 2015Forecast: 10.4 ft 2:00PM May 07, 2015Forecast: 10.7 ft 8:00PM May 07, 2015Forecast: 10.3 ft 2:00AM May 08, 2015Forecast: 10.2 ft 8:00AM May 08, 2015Forecast: 10.3 ft 2:00PM May 08, 2015Forecast: 10.5 ft 8:00PM May 08, 2015USGS--Water Resources of the United StatesGYLP1(plotting HPIRG) Graph Created (6:02AM May 4, 2015)ObservedForecast (issued 9:16PM May 3)Latest observed value: 10.73 ft at 5:45 AM EDT 4-May-2015. 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 Locations 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
Low Stage (in feet): 0

Historic 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) 22.78 ft on 03/04/2015
(6) 21.70 ft on 12/14/2007
(7) 21.37 ft on 12/14/2007
(8) 21.00 ft on 05/04/2009
(9) 20.70 ft on 03/21/2002
(10) 20.60 ft on 01/26/2010
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 18.51 ft on 03/15/2015
(2) 22.78 ft on 03/04/2015
(3) 20.09 ft on 11/23/2011
(4) 20.60 ft on 01/26/2010
(5) 21.00 ft on 05/04/2009
(6) 19.27 ft on 06/05/2008
(7) 21.70 ft on 12/14/2007
(8) 21.37 ft on 12/14/2007
(9) 19.31 ft on 04/16/2007
(10) 19.34 ft on 03/07/2004
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
KML Image
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
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:

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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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