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Hydrograph River at a Glance Download
Monongahela River at Point Marion Lock and Dam (lower pool) Tailwater (ft)Flow (kcfs)Observed: 14.29 ft at 4:00PM May 04, 2021Observed: 14.32 ft at 4:15PM May 04, 2021Observed: 14.35 ft at 4:30PM May 04, 2021Observed: 14.4 ft at 4:45PM May 04, 2021Observed: 14.43 ft at 5:00PM May 04, 2021Observed: 14.49 ft at 5:15PM May 04, 2021Observed: 14.58 ft at 5:30PM May 04, 2021Observed: 14.57 ft at 5:45PM May 04, 2021Observed: 14.66 ft at 6:00PM May 04, 2021Observed: 14.75 ft at 6:15PM May 04, 2021Observed: 14.77 ft at 6:30PM May 04, 2021Observed: 14.83 ft at 6:45PM May 04, 2021Observed: 14.91 ft at 7:00PM May 04, 2021Observed: 14.9 ft at 7:15PM May 04, 2021Observed: 14.95 ft at 7:30PM May 04, 2021Observed: 14.99 ft at 7:45PM May 04, 2021Observed: 15.02 ft at 8:00PM May 04, 2021Observed: 15.02 ft at 8:15PM May 04, 2021Observed: 15.06 ft at 8:30PM May 04, 2021Observed: 15.07 ft at 8:45PM May 04, 2021Observed: 15.09 ft at 9:00PM May 04, 2021Observed: 15.09 ft at 9:15PM May 04, 2021Observed: 15.12 ft at 9:30PM May 04, 2021Observed: 15.15 ft at 9:45PM May 04, 2021Observed: 15.14 ft at 10:00PM May 04, 2021Observed: 15.13 ft at 10:15PM May 04, 2021Observed: 15.15 ft at 10:30PM May 04, 2021Observed: 15.15 ft at 10:45PM May 04, 2021Observed: 15.14 ft at 11:00PM May 04, 2021Observed: 15.06 ft at 11:15PM May 04, 2021Observed: 15.12 ft at 11:30PM May 04, 2021Observed: 15.13 ft at 11:45PM May 04, 2021Observed: 15.13 ft at 12:00AM May 05, 2021Observed: 15.11 ft at 12:15AM May 05, 2021Observed: 15.06 ft at 12:30AM May 05, 2021Observed: 15.06 ft at 12:45AM May 05, 2021Observed: 15.07 ft at 1:00AM May 05, 2021Observed: 15.02 ft at 1:15AM May 05, 2021Observed: 15.19 ft at 1:30AM May 05, 2021Observed: 15.13 ft at 1:45AM May 05, 2021Observed: 14.97 ft at 2:00AM May 05, 2021Observed: 15.01 ft at 2:15AM May 05, 2021Observed: 15.07 ft at 2:30AM May 05, 2021Observed: 15.13 ft at 2:45AM May 05, 2021Observed: 15.17 ft at 3:00AM May 05, 2021Observed: 15.24 ft at 3:15AM May 05, 2021Observed: 15.26 ft at 3:30AM May 05, 2021Observed: 15.31 ft at 3:45AM May 05, 2021Observed: 15.33 ft at 4:00AM May 05, 2021Observed: 15.37 ft at 4:15AM May 05, 2021Observed: 15.37 ft at 4:30AM May 05, 2021Observed: 15.4 ft at 4:45AM May 05, 2021Observed: 15.42 ft at 5:00AM May 05, 2021Observed: 15.46 ft at 5:15AM May 05, 2021Observed: 15.55 ft at 5:30AM May 05, 2021Observed: 15.59 ft at 5:45AM May 05, 2021Observed: 15.59 ft at 6:00AM May 05, 2021Observed: 15.47 ft at 6:15AM May 05, 2021Observed: 15.64 ft at 6:30AM May 05, 2021Observed: 15.69 ft at 6:45AM May 05, 2021Observed: 15.72 ft at 7:00AM May 05, 2021Observed: 15.73 ft at 7:15AM May 05, 2021Observed: 15.77 ft at 7:30AM May 05, 2021Observed: 15.79 ft at 7:45AM May 05, 2021Observed: 15.99 ft at 8:00AM May 05, 2021Observed: 16.13 ft at 8:15AM May 05, 2021Observed: 16.26 ft at 8:30AM May 05, 2021Observed: 16.49 ft at 8:45AM May 05, 2021Observed: 16.54 ft at 9:00AM May 05, 2021Observed: 16.71 ft at 9:15AM May 05, 2021Observed: 16.85 ft at 9:30AM May 05, 2021Observed: 16.96 ft at 9:45AM May 05, 2021Observed: 17.03 ft at 10:00AM May 05, 2021Observed: 17.17 ft at 10:15AM May 05, 2021Observed: 17.29 ft at 10:30AM May 05, 2021Observed: 17.38 ft at 10:45AM May 05, 2021Observed: 17.44 ft at 11:00AM May 05, 2021Observed: 17.49 ft at 11:15AM May 05, 2021Observed: 17.57 ft at 11:30AM May 05, 2021Observed: 17.63 ft at 11:45AM May 05, 2021Observed: 17.71 ft at 12:00PM May 05, 2021Observed: 17.85 ft at 12:15PM May 05, 2021Observed: 17.94 ft at 12:30PM May 05, 2021Observed: 18.03 ft at 12:45PM May 05, 2021Observed: 18.11 ft at 1:00PM May 05, 2021Observed: 18.21 ft at 1:15PM May 05, 2021Observed: 18.31 ft at 1:30PM May 05, 2021Observed: 18.4 ft at 1:45PM May 05, 2021Observed: 18.44 ft at 2:00PM May 05, 2021Observed: 18.49 ft at 2:15PM May 05, 2021Observed: 18.62 ft at 2:30PM May 05, 2021Highest Observation: 18.87 ft at 2:45PM May 05, 2021Observed: 18.86 ft at 3:00PM May 05, 2021Observed: 18.83 ft at 3:15PM May 05, 2021Observed: 18.86 ft at 3:30PM May 05, 2021Observed: 18.86 ft at 3:45PM May 05, 2021Highest Observation: 18.87 ft at 4:00PM May 05, 2021Observed: 18.85 ft at 4:15PM May 05, 2021Observed: 18.83 ft at 4:30PM May 05, 2021Observed: 18.81 ft at 4:45PM May 05, 2021Observed: 18.73 ft at 5:00PM May 05, 2021Observed: 18.67 ft at 5:15PM May 05, 2021Observed: 18.61 ft at 5:30PM May 05, 2021Observed: 18.59 ft at 5:45PM May 05, 2021Observed: 18.53 ft at 6:00PM May 05, 2021Observed: 18.53 ft at 6:15PM May 05, 2021Observed: 18.49 ft at 6:30PM May 05, 2021Observed: 18.46 ft at 6:45PM May 05, 2021Observed: 18.45 ft at 7:00PM May 05, 2021Observed: 18.45 ft at 7:15PM May 05, 2021Observed: 18.46 ft at 7:30PM May 05, 2021Observed: 18.45 ft at 7:45PM May 05, 2021Observed: 18.36 ft at 8:00PM May 05, 2021Observed: 18.34 ft at 8:15PM May 05, 2021Observed: 18.29 ft at 8:30PM May 05, 2021Observed: 18.28 ft at 8:45PM May 05, 2021Observed: 18.26 ft at 9:00PM May 05, 2021Observed: 18.24 ft at 9:15PM May 05, 2021Observed: 18.25 ft at 9:30PM May 05, 2021Observed: 18.22 ft at 9:45PM May 05, 2021Observed: 18.22 ft at 10:00PM May 05, 2021Observed: 18.17 ft at 10:15PM May 05, 2021Observed: 18.14 ft at 10:30PM May 05, 2021Observed: 18.12 ft at 10:45PM May 05, 2021Observed: 18.11 ft at 11:00PM May 05, 2021Observed: 18.06 ft at 11:15PM May 05, 2021Observed: 18.05 ft at 11:30PM May 05, 2021Observed: 18.01 ft at 11:45PM May 05, 2021Observed: 18.03 ft at 12:00AM May 06, 2021Observed: 18.01 ft at 12:15AM May 06, 2021Observed: 17.99 ft at 12:30AM May 06, 2021Observed: 17.99 ft at 12:45AM May 06, 2021Observed: 17.94 ft at 1:00AM May 06, 2021Observed: 17.92 ft at 1:15AM May 06, 2021Observed: 17.89 ft at 1:30AM May 06, 2021Observed: 17.86 ft at 1:45AM May 06, 2021Observed: 17.82 ft at 2:00AM May 06, 2021Observed: 17.81 ft at 2:15AM May 06, 2021Observed: 17.78 ft at 2:30AM May 06, 2021Observed: 17.77 ft at 2:45AM May 06, 2021Observed: 17.74 ft at 3:00AM May 06, 2021Observed: 17.72 ft at 3:15AM May 06, 2021Observed: 17.47 ft at 3:30AM May 06, 2021Observed: 17.47 ft at 3:45AM May 06, 2021Observed: 17.43 ft at 4:00AM May 06, 2021Observed: 17.39 ft at 4:15AM May 06, 2021Observed: 17.31 ft at 4:30AM May 06, 2021Observed: 17.28 ft at 4:45AM May 06, 2021Observed: 17.24 ft at 5:00AM May 06, 2021Observed: 17.19 ft at 5:15AM May 06, 2021Observed: 17.16 ft at 5:30AM May 06, 2021Observed: 17.03 ft at 5:45AM May 06, 2021Observed: 16.99 ft at 6:00AM May 06, 2021Observed: 16.92 ft at 6:15AM May 06, 2021Observed: 16.89 ft at 6:30AM May 06, 2021Observed: 16.81 ft at 6:45AM May 06, 2021Observed: 16.69 ft at 7:00AM May 06, 2021Observed: 16.66 ft at 7:15AM May 06, 2021Observed: 16.63 ft at 7:30AM May 06, 2021Observed: 16.53 ft at 7:45AM May 06, 2021Observed: 16.42 ft at 8:00AM May 06, 2021Observed: 16.42 ft at 8:15AM May 06, 2021Observed: 16.28 ft at 8:30AM May 06, 2021Observed: 16.24 ft at 8:45AM May 06, 2021Observed: 16.17 ft at 9:00AM May 06, 2021Observed: 16.09 ft at 9:15AM May 06, 2021Observed: 16.06 ft at 9:30AM May 06, 2021Observed: 15.93 ft at 9:45AM May 06, 2021Observed: 15.96 ft at 10:00AM May 06, 2021Observed: 15.92 ft at 10:15AM May 06, 2021Observed: 15.92 ft at 10:30AM May 06, 2021Observed: 15.91 ft at 10:45AM May 06, 2021Observed: 15.86 ft at 11:00AM May 06, 2021Observed: 15.9 ft at 11:15AM May 06, 2021Observed: 15.89 ft at 11:30AM May 06, 2021Observed: 15.9 ft at 11:45AM May 06, 2021Observed: 15.91 ft at 12:00PM May 06, 2021Observed: 15.91 ft at 12:15PM May 06, 2021Observed: 15.89 ft at 12:30PM May 06, 2021Observed: 15.94 ft at 12:45PM May 06, 2021Observed: 15.84 ft at 1:00PM May 06, 2021Observed: 15.85 ft at 1:15PM May 06, 2021Observed: 15.89 ft at 1:30PM May 06, 2021Observed: 15.89 ft at 1:45PM May 06, 2021Observed: 15.87 ft at 2:00PM May 06, 2021Observed: 15.93 ft at 2:15PM May 06, 2021Observed: 15.89 ft at 2:30PM May 06, 2021Observed: 15.88 ft at 2:45PM May 06, 2021Observed: 15.85 ft at 3:00PM May 06, 2021Observed: 15.87 ft at 3:15PM May 06, 2021Observed: 15.84 ft at 3:30PM May 06, 2021Observed: 15.84 ft at 3:45PM May 06, 2021Observed: 15.72 ft at 4:00PM May 06, 2021Observed: 15.72 ft at 4:15PM May 06, 2021Observed: 15.71 ft at 4:30PM May 06, 2021Observed: 15.65 ft at 4:45PM May 06, 2021Observed: 15.62 ft at 5:00PM May 06, 2021Observed: 15.59 ft at 5:15PM May 06, 2021Observed: 15.56 ft at 5:30PM May 06, 2021Observed: 15.48 ft at 5:45PM May 06, 2021Observed: 15.45 ft at 6:00PM May 06, 2021Observed: 15.44 ft at 6:15PM May 06, 2021Observed: 15.43 ft at 6:30PM May 06, 2021Observed: 15.39 ft at 6:45PM May 06, 2021Observed: 15.39 ft at 7:00PM May 06, 2021Observed: 15.35 ft at 7:15PM May 06, 2021Observed: 15.35 ft at 7:30PM May 06, 2021Observed: 15.31 ft at 7:45PM May 06, 2021Observed: 15.31 ft at 8:00PM May 06, 2021Observed: 15.32 ft at 8:15PM May 06, 2021Observed: 15.37 ft at 8:30PM May 06, 2021Observed: 15.31 ft at 8:45PM May 06, 2021Observed: 15.27 ft at 9:00PM May 06, 2021Observed: 15.27 ft at 9:15PM May 06, 2021Observed: 15.24 ft at 9:30PM May 06, 2021Observed: 15.21 ft at 9:45PM May 06, 2021Observed: 15.24 ft at 10:00PM May 06, 2021Observed: 15.21 ft at 10:15PM May 06, 2021Observed: 15.22 ft at 10:30PM May 06, 2021Observed: 15.22 ft at 10:45PM May 06, 2021Observed: 15.21 ft at 11:00PM May 06, 2021Observed: 15.22 ft at 11:15PM May 06, 2021Observed: 15.22 ft at 11:30PM May 06, 2021Observed: 15.22 ft at 11:45PM May 06, 2021Observed: 15.21 ft at 12:00AM May 07, 2021Observed: 15.19 ft at 12:15AM May 07, 2021Observed: 15.17 ft at 12:30AM May 07, 2021Observed: 15.16 ft at 12:45AM May 07, 2021Observed: 15.16 ft at 1:00AM May 07, 2021Observed: 15.15 ft at 1:15AM May 07, 2021Observed: 15.14 ft at 1:30AM May 07, 2021Observed: 15.15 ft at 1:45AM May 07, 2021Observed: 15.14 ft at 2:00AM May 07, 2021Observed: 15.18 ft at 2:15AM May 07, 2021Observed: 15.17 ft at 2:30AM May 07, 2021Observed: 15.14 ft at 2:45AM May 07, 2021Observed: 15.07 ft at 3:00AM May 07, 2021Observed: 15.11 ft at 3:15AM May 07, 2021Observed: 15.02 ft at 3:30AM May 07, 2021Observed: 15.09 ft at 3:45AM May 07, 2021Observed: 15.05 ft at 4:00AM May 07, 2021Observed: 15.06 ft at 4:15AM May 07, 2021Observed: 15.04 ft at 4:30AM May 07, 2021Observed: 15.05 ft at 4:45AM May 07, 2021Observed: 15.04 ft at 5:00AM May 07, 2021Observed: 15.03 ft at 5:15AM May 07, 2021Observed: 15.02 ft at 5:30AM May 07, 2021Observed: 15.03 ft at 5:45AM May 07, 2021Observed: 15.03 ft at 6:00AM May 07, 2021Observed: 15.02 ft at 6:15AM May 07, 2021Observed: 15.04 ft at 6:30AM May 07, 2021Observed: 15.03 ft at 6:45AM May 07, 2021Observed: 15.03 ft at 7:00AM May 07, 2021Observed: 15.04 ft at 7:15AM May 07, 2021Observed: 15.06 ft at 7:30AM May 07, 2021Observed: 15.07 ft at 7:45AM May 07, 2021Observed: 15.03 ft at 8:00AM May 07, 2021Observed: 15.03 ft at 8:15AM May 07, 2021Observed: 15.02 ft at 8:30AM May 07, 2021Observed: 15.02 ft at 8:45AM May 07, 2021Observed: 14.92 ft at 9:00AM May 07, 2021Observed: 14.84 ft at 9:15AM May 07, 2021Observed: 14.77 ft at 9:30AM May 07, 2021Observed: 14.84 ft at 9:45AM May 07, 2021Observed: 14.81 ft at 10:00AM May 07, 2021Observed: 14.73 ft at 10:15AM May 07, 2021Observed: 14.72 ft at 10:30AM May 07, 2021Observed: 14.71 ft at 10:45AM May 07, 2021Observed: 14.67 ft at 11:00AM May 07, 2021Observed: 14.67 ft at 11:15AM May 07, 2021Observed: 14.66 ft at 11:30AM May 07, 2021Observed: 14.65 ft at 11:45AM May 07, 2021Observed: 14.64 ft at 12:00PM May 07, 2021Observed: 14.64 ft at 12:15PM May 07, 2021Observed: 14.65 ft at 12:30PM May 07, 2021Observed: 14.63 ft at 12:45PM May 07, 2021Observed: 14.63 ft at 1:00PM May 07, 2021Observed: 14.63 ft at 1:15PM May 07, 2021Observed: 14.51 ft at 1:30PM May 07, 2021Observed: 14.59 ft at 1:45PM May 07, 2021Observed: 14.61 ft at 2:00PM May 07, 2021Observed: 14.61 ft at 2:15PM May 07, 2021Observed: 14.61 ft at 2:30PM May 07, 2021Observed: 14.64 ft at 2:45PM May 07, 2021Observed: 14.65 ft at 3:00PM May 07, 2021Observed: 14.66 ft at 3:15PM May 07, 2021Forecast: 14.5 ft 8:00PM May 07, 2021Forecast: 14 ft 2:00AM May 08, 2021Forecast: 13.9 ft 8:00AM May 08, 2021Forecast: 13.6 ft 2:00PM May 08, 2021Forecast: 13.7 ft 8:00PM May 08, 2021Forecast: 13.4 ft 2:00AM May 09, 2021Forecast: 13.4 ft 8:00AM May 09, 2021Forecast: 13.1 ft 2:00PM May 09, 2021Forecast: 13.6 ft 8:00PM May 09, 2021Forecast: 14.4 ft 2:00AM May 10, 2021Forecast: 15.7 ft 8:00AM May 10, 2021Highest Forecast: 16.1 ft 2:00PM May 10, 2021Forecast: 15.9 ft 8:00PM May 10, 2021Forecast: 15.5 ft 2:00AM May 11, 2021Forecast: 15 ft 8:00AM May 11, 2021Forecast: 14.7 ft 2:00PM May 11, 2021Forecast: 14.2 ft 8:00PM May 11, 2021Forecast: 13.6 ft 2:00AM May 12, 2021Forecast: 13.3 ft 8:00AM May 12, 2021PMRP1(plotting HTIRG) Graph Created (3:48PM May 7, 2021)ObservedForecast (issued 10:34AM May 7)Latest observed value: 14.66 ft at 3:15 PM EDT 7-May-2021. Flood Stage is 26 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
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 Point Marion Lock and Dam (lower pool) are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Morgantown Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Grays Landing Lock and Dam
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 27
Flood Stage: 26
Action Stage: 20
Low Stage (in feet): -9999

Historic Crests
(1) 34.00 ft on 01/19/1996
(2) 33.50 ft on 03/07/1967
(3) 32.30 ft on 02/19/2000
(4) 31.80 ft on 03/05/1963
(5) 30.30 ft on 07/29/2017
(6) 30.20 ft on 03/20/1963
(7) 29.70 ft on 05/24/1968
(8) 27.97 ft on 03/04/2015
(9) 27.66 ft on 02/17/2018
(10) 27.60 ft on 01/26/1978
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 18.99 ft on 02/08/2019
(2) 22.40 ft on 09/28/2018
(3) 27.66 ft on 02/17/2018
(4) 30.30 ft on 07/29/2017
(5) 21.63 ft on 03/15/2015
(6) 27.97 ft on 03/04/2015
(7) 25.10 ft on 01/26/2010
(8) 26.19 ft on 05/04/2009
(9) 23.65 ft on 06/05/2008
(10) 27.00 ft on 12/14/2007
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 01/01/1980
Zoom Level:14
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
45 Flood waters extend to near the railroad tracks.
44.4 Water reaches the flood of record...Election Day Flood event...November 5, 1985.
40 Flood waters extend to main and cheat streets.
35 Flood waters reach portions of Fourth, Water, Second, Broadway, and Home Streets in Point Marion.
34 Flood waters reach homes on Water Street, and the lock walls are overtopped at Point Marion Locks and Dam.
30.36 Water levels reach the flood levels of the flood of July 29, 2017.
29.7 The first floors of about twenty-five homes in Point Marion are flooded, and backwater flooding occurs along Camp Run.
29 The locks go out of service at the Point Marion Locks and Dam, and navigation is suspended. Flood waters reach Water Street near the intersection with Penn Street in Point Marion.
27.97 Water reaches the level reached on March 4, 2015.
27.5 Flood waters reach the access road to Point Marion Locks and Dam about 0.8 of a mile below the dam.
26 Basement flooding begins in some homes and businesses in Point Marion.
About This Location Collapse

Latitude: 39.726944° N, Longitude: 79.911667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 26 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 29 782.50 808.50 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:

Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

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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: 2-Nov-2020 7:30 PM
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