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Hydrograph River at a Glance Download
Monongahela River at Elizabeth Lock and Dam Pool (ft)Flow (kcfs)Highest Observation: 10.51 ft at 6:30AM May 26, 2023Highest Observation: 10.51 ft at 6:45AM May 26, 2023Highest Observation: 10.51 ft at 7:00AM May 26, 2023Highest Observation: 10.51 ft at 7:15AM May 26, 2023Highest Observation: 10.51 ft at 7:30AM May 26, 2023Observed: 10.5 ft at 7:45AM May 26, 2023Observed: 10.49 ft at 8:00AM May 26, 2023Observed: 10.48 ft at 8:15AM May 26, 2023Observed: 10.48 ft at 8:30AM May 26, 2023Observed: 10.48 ft at 8:45AM May 26, 2023Observed: 10.47 ft at 9:00AM May 26, 2023Observed: 10.47 ft at 9:15AM May 26, 2023Observed: 10.47 ft at 9:30AM May 26, 2023Observed: 10.48 ft at 9:45AM May 26, 2023Observed: 10.48 ft at 10:00AM May 26, 2023Observed: 10.47 ft at 10:15AM May 26, 2023Observed: 10.45 ft at 10:30AM May 26, 2023Observed: 10.45 ft at 10:45AM May 26, 2023Observed: 10.47 ft at 11:00AM May 26, 2023Observed: 10.46 ft at 11:15AM May 26, 2023Observed: 10.47 ft at 11:30AM May 26, 2023Observed: 10.46 ft at 11:45AM May 26, 2023Observed: 10.45 ft at 12:00PM May 26, 2023Observed: 10.45 ft at 12:15PM May 26, 2023Observed: 10.45 ft at 12:30PM May 26, 2023Observed: 10.45 ft at 12:45PM May 26, 2023Observed: 10.44 ft at 1:00PM May 26, 2023Observed: 10.44 ft at 1:15PM May 26, 2023Observed: 10.47 ft at 1:30PM May 26, 2023Observed: 10.46 ft at 1:45PM May 26, 2023Observed: 10.46 ft at 2:00PM May 26, 2023Observed: 10.46 ft at 2:15PM May 26, 2023Observed: 10.45 ft at 2:30PM May 26, 2023Observed: 10.44 ft at 2:45PM May 26, 2023Observed: 10.44 ft at 3:00PM May 26, 2023Observed: 10.44 ft at 3:15PM May 26, 2023Observed: 10.44 ft at 3:30PM May 26, 2023Observed: 10.44 ft at 3:45PM May 26, 2023Observed: 10.44 ft at 4:00PM May 26, 2023Observed: 10.44 ft at 4:15PM May 26, 2023Observed: 10.45 ft at 4:30PM May 26, 2023Observed: 10.46 ft at 4:45PM May 26, 2023Observed: 10.45 ft at 5:00PM May 26, 2023Observed: 10.44 ft at 5:15PM May 26, 2023Observed: 10.44 ft at 5:30PM May 26, 2023Observed: 10.43 ft at 5:45PM May 26, 2023Observed: 10.43 ft at 6:00PM May 26, 2023Observed: 10.43 ft at 6:15PM May 26, 2023Observed: 10.43 ft at 6:30PM May 26, 2023Observed: 10.43 ft at 6:45PM May 26, 2023Observed: 10.43 ft at 7:00PM May 26, 2023Observed: 10.44 ft at 7:15PM May 26, 2023Observed: 10.44 ft at 7:30PM May 26, 2023Observed: 10.44 ft at 7:45PM May 26, 2023Observed: 10.43 ft at 8:00PM May 26, 2023Observed: 10.43 ft at 8:15PM May 26, 2023Observed: 10.43 ft at 8:30PM May 26, 2023Observed: 10.43 ft at 8:45PM May 26, 2023Observed: 10.43 ft at 9:00PM May 26, 2023Observed: 10.44 ft at 9:15PM May 26, 2023Observed: 10.44 ft at 9:30PM May 26, 2023Observed: 10.44 ft at 9:45PM May 26, 2023Observed: 10.44 ft at 10:00PM May 26, 2023Observed: 10.44 ft at 10:15PM May 26, 2023Observed: 10.43 ft at 10:30PM May 26, 2023Observed: 10.41 ft at 10:45PM May 26, 2023Observed: 10.4 ft at 11:00PM May 26, 2023Observed: 10.39 ft at 11:15PM May 26, 2023Observed: 10.38 ft at 11:30PM May 26, 2023Observed: 10.38 ft at 11:45PM May 26, 2023Observed: 10.38 ft at 12:00AM May 27, 2023Observed: 10.38 ft at 12:15AM May 27, 2023Observed: 10.37 ft at 12:30AM May 27, 2023Observed: 10.37 ft at 12:45AM May 27, 2023Observed: 10.36 ft at 1:00AM May 27, 2023Observed: 10.35 ft at 1:15AM May 27, 2023Observed: 10.35 ft at 1:30AM May 27, 2023Observed: 10.34 ft at 1:45AM May 27, 2023Observed: 10.34 ft at 2:00AM May 27, 2023Observed: 10.34 ft at 2:15AM May 27, 2023Observed: 10.33 ft at 2:30AM May 27, 2023Observed: 10.35 ft at 2:45AM May 27, 2023Observed: 10.33 ft at 3:00AM May 27, 2023Observed: 10.33 ft at 3:15AM May 27, 2023Observed: 10.32 ft at 3:30AM May 27, 2023Observed: 10.31 ft at 3:45AM May 27, 2023Observed: 10.3 ft at 4:00AM May 27, 2023Observed: 10.3 ft at 4:15AM May 27, 2023Observed: 10.3 ft at 4:30AM May 27, 2023Observed: 10.3 ft at 4:45AM May 27, 2023Observed: 10.3 ft at 5:00AM May 27, 2023Observed: 10.31 ft at 5:15AM May 27, 2023Observed: 10.31 ft at 5:30AM May 27, 2023Observed: 10.32 ft at 5:45AM May 27, 2023Observed: 10.3 ft at 6:00AM May 27, 2023Observed: 10.29 ft at 6:15AM May 27, 2023Observed: 10.28 ft at 6:30AM May 27, 2023Observed: 10.28 ft at 6:45AM May 27, 2023Observed: 10.29 ft at 7:00AM May 27, 2023Observed: 10.29 ft at 7:15AM May 27, 2023Observed: 10.28 ft at 7:30AM May 27, 2023Observed: 10.28 ft at 7:45AM May 27, 2023Observed: 10.28 ft at 8:00AM May 27, 2023Observed: 10.31 ft at 8:15AM May 27, 2023Observed: 10.3 ft at 8:30AM May 27, 2023Observed: 10.29 ft at 8:45AM May 27, 2023Observed: 10.28 ft at 9:00AM May 27, 2023Observed: 10.28 ft at 9:15AM May 27, 2023Observed: 10.27 ft at 9:30AM May 27, 2023Observed: 10.29 ft at 9:45AM May 27, 2023Observed: 10.28 ft at 10:00AM May 27, 2023Observed: 10.28 ft at 10:15AM May 27, 2023Observed: 10.27 ft at 10:30AM May 27, 2023Observed: 10.28 ft at 10:45AM May 27, 2023Observed: 10.28 ft at 11:00AM May 27, 2023Observed: 10.29 ft at 11:15AM May 27, 2023Observed: 10.28 ft at 11:30AM May 27, 2023Observed: 10.27 ft at 11:45AM May 27, 2023Observed: 10.27 ft at 12:00PM May 27, 2023Observed: 10.27 ft at 12:15PM May 27, 2023Observed: 10.27 ft at 12:30PM May 27, 2023Observed: 10.27 ft at 12:45PM May 27, 2023Observed: 10.26 ft at 1:00PM May 27, 2023Observed: 10.25 ft at 1:15PM May 27, 2023Observed: 10.26 ft at 1:30PM May 27, 2023Observed: 10.26 ft at 1:45PM May 27, 2023Observed: 10.25 ft at 2:00PM May 27, 2023Observed: 10.26 ft at 2:15PM May 27, 2023Observed: 10.25 ft at 2:30PM May 27, 2023Observed: 10.25 ft at 2:45PM May 27, 2023Observed: 10.25 ft at 3:00PM May 27, 2023Observed: 10.26 ft at 3:15PM May 27, 2023Observed: 10.26 ft at 3:30PM May 27, 2023Observed: 10.25 ft at 3:45PM May 27, 2023Observed: 10.26 ft at 4:00PM May 27, 2023Observed: 10.28 ft at 4:15PM May 27, 2023Observed: 10.28 ft at 4:30PM May 27, 2023Observed: 10.27 ft at 4:45PM May 27, 2023Observed: 10.27 ft at 5:00PM May 27, 2023Observed: 10.26 ft at 5:15PM May 27, 2023Observed: 10.25 ft at 5:30PM May 27, 2023Observed: 10.25 ft at 5:45PM May 27, 2023Observed: 10.26 ft at 6:00PM May 27, 2023Observed: 10.25 ft at 6:15PM May 27, 2023Observed: 10.25 ft at 6:30PM May 27, 2023Observed: 10.26 ft at 6:45PM May 27, 2023Observed: 10.29 ft at 7:00PM May 27, 2023Observed: 10.28 ft at 7:15PM May 27, 2023Observed: 10.29 ft at 7:30PM May 27, 2023Observed: 10.29 ft at 7:45PM May 27, 2023Observed: 10.27 ft at 8:00PM May 27, 2023Observed: 10.26 ft at 8:15PM May 27, 2023Observed: 10.26 ft at 8:30PM May 27, 2023Observed: 10.26 ft at 8:45PM May 27, 2023Observed: 10.28 ft at 9:00PM May 27, 2023Observed: 10.27 ft at 9:15PM May 27, 2023Observed: 10.28 ft at 9:30PM May 27, 2023Observed: 10.27 ft at 9:45PM May 27, 2023Observed: 10.27 ft at 10:00PM May 27, 2023Observed: 10.27 ft at 10:15PM May 27, 2023Observed: 10.27 ft at 10:30PM May 27, 2023Observed: 10.26 ft at 10:45PM May 27, 2023Observed: 10.27 ft at 11:00PM May 27, 2023Observed: 10.27 ft at 11:15PM May 27, 2023Observed: 10.27 ft at 11:30PM May 27, 2023Observed: 10.26 ft at 11:45PM May 27, 2023Observed: 10.22 ft at 12:00AM May 28, 2023Observed: 10.19 ft at 12:15AM May 28, 2023Observed: 10.18 ft at 12:30AM May 28, 2023Observed: 10.17 ft at 12:45AM May 28, 2023Observed: 10.17 ft at 1:00AM May 28, 2023Observed: 10.16 ft at 1:15AM May 28, 2023Observed: 10.16 ft at 1:30AM May 28, 2023Observed: 10.15 ft at 1:45AM May 28, 2023Observed: 10.15 ft at 2:00AM May 28, 2023Observed: 10.14 ft at 2:15AM May 28, 2023Observed: 10.13 ft at 2:30AM May 28, 2023Observed: 10.11 ft at 2:45AM May 28, 2023Observed: 10.1 ft at 3:00AM May 28, 2023Observed: 10.09 ft at 3:15AM May 28, 2023Observed: 10.09 ft at 3:30AM May 28, 2023Observed: 10.09 ft at 3:45AM May 28, 2023Observed: 10.09 ft at 4:00AM May 28, 2023Observed: 10.09 ft at 4:15AM May 28, 2023Observed: 10.08 ft at 4:30AM May 28, 2023Observed: 10.08 ft at 4:45AM May 28, 2023Observed: 10.07 ft at 5:00AM May 28, 2023Observed: 10.06 ft at 5:15AM May 28, 2023Observed: 10.05 ft at 5:30AM May 28, 2023Observed: 10.05 ft at 5:45AM May 28, 2023Observed: 10.04 ft at 6:00AM May 28, 2023Observed: 10.06 ft at 6:15AM May 28, 2023Observed: 10.05 ft at 6:30AM May 28, 2023Observed: 10.05 ft at 6:45AM May 28, 2023Observed: 10.04 ft at 7:00AM May 28, 2023Observed: 10.04 ft at 7:15AM May 28, 2023Observed: 10.03 ft at 7:30AM May 28, 2023Observed: 10.03 ft at 7:45AM May 28, 2023Observed: 10.03 ft at 8:00AM May 28, 2023Observed: 10.02 ft at 8:15AM May 28, 2023Observed: 10.02 ft at 8:30AM May 28, 2023Observed: 10.02 ft at 8:45AM May 28, 2023Observed: 10.02 ft at 9:00AM May 28, 2023Observed: 10.03 ft at 9:15AM May 28, 2023Observed: 10.03 ft at 9:30AM May 28, 2023Observed: 10.02 ft at 9:45AM May 28, 2023Observed: 10.01 ft at 10:00AM May 28, 2023Observed: 10.01 ft at 10:15AM May 28, 2023Observed: 10 ft at 11:30AM May 28, 2023Observed: 10.02 ft at 11:45AM May 28, 2023Observed: 10.01 ft at 12:00PM May 28, 2023Observed: 10.01 ft at 12:15PM May 28, 2023Observed: 10 ft at 12:30PM May 28, 2023Observed: 10.01 ft at 12:45PM May 28, 2023Observed: 10 ft at 1:00PM May 28, 2023Observed: 10.01 ft at 1:15PM May 28, 2023Observed: 10.01 ft at 1:30PM May 28, 2023Observed: 10.01 ft at 1:45PM May 28, 2023Observed: 10.01 ft at 2:00PM May 28, 2023Observed: 10.02 ft at 2:15PM May 28, 2023Observed: 10.01 ft at 2:30PM May 28, 2023Observed: 10 ft at 2:45PM May 28, 2023Observed: 10 ft at 3:00PM May 28, 2023Observed: 9.99 ft at 3:15PM May 28, 2023Observed: 9.99 ft at 3:30PM May 28, 2023Observed: 9.99 ft at 3:45PM May 28, 2023Observed: 10.01 ft at 4:00PM May 28, 2023Observed: 10 ft at 4:15PM May 28, 2023Observed: 10 ft at 4:30PM May 28, 2023Observed: 10 ft at 4:45PM May 28, 2023Observed: 10 ft at 5:00PM May 28, 2023Observed: 10 ft at 5:15PM May 28, 2023Observed: 9.99 ft at 5:30PM May 28, 2023Observed: 9.99 ft at 5:45PM May 28, 2023Observed: 9.99 ft at 6:00PM May 28, 2023Observed: 9.99 ft at 6:15PM May 28, 2023Observed: 9.99 ft at 6:30PM May 28, 2023Observed: 10 ft at 6:45PM May 28, 2023Observed: 10 ft at 7:00PM May 28, 2023Observed: 10 ft at 7:15PM May 28, 2023Observed: 10 ft at 7:30PM May 28, 2023Observed: 10 ft at 7:45PM May 28, 2023Observed: 9.99 ft at 8:00PM May 28, 2023Observed: 10.01 ft at 8:15PM May 28, 2023Observed: 10 ft at 8:30PM May 28, 2023Observed: 10 ft at 8:45PM May 28, 2023Observed: 9.99 ft at 9:00PM May 28, 2023Observed: 10 ft at 9:15PM May 28, 2023Observed: 10 ft at 9:30PM May 28, 2023Observed: 10 ft at 9:45PM May 28, 2023Observed: 10 ft at 10:00PM May 28, 2023Observed: 9.99 ft at 10:15PM May 28, 2023Observed: 10.01 ft at 10:30PM May 28, 2023Observed: 10.01 ft at 10:45PM May 28, 2023Observed: 10.01 ft at 11:00PM May 28, 2023Observed: 10 ft at 11:15PM May 28, 2023Observed: 9.99 ft at 11:30PM May 28, 2023Observed: 9.99 ft at 11:45PM May 28, 2023Observed: 9.99 ft at 12:00AM May 29, 2023Observed: 9.99 ft at 12:15AM May 29, 2023Observed: 9.99 ft at 12:30AM May 29, 2023Observed: 9.99 ft at 12:45AM May 29, 2023Observed: 9.98 ft at 1:00AM May 29, 2023Observed: 9.99 ft at 1:15AM May 29, 2023Observed: 9.99 ft at 1:30AM May 29, 2023Observed: 9.99 ft at 1:45AM May 29, 2023Observed: 9.99 ft at 2:00AM May 29, 2023Observed: 10 ft at 2:15AM May 29, 2023Observed: 10 ft at 2:30AM May 29, 2023Observed: 9.99 ft at 2:45AM May 29, 2023Observed: 9.99 ft at 3:00AM May 29, 2023Observed: 9.99 ft at 3:15AM May 29, 2023Observed: 9.98 ft at 3:30AM May 29, 2023Observed: 9.99 ft at 3:45AM May 29, 2023Observed: 9.99 ft at 4:00AM May 29, 2023Observed: 9.99 ft at 4:15AM May 29, 2023Observed: 9.99 ft at 4:30AM May 29, 2023Observed: 9.99 ft at 4:45AM May 29, 2023Observed: 9.99 ft at 5:00AM May 29, 2023Observed: 9.99 ft at 5:15AM May 29, 2023Forecast: 10 ft 8:00AM May 29, 2023Forecast: 10.1 ft 2:00PM May 29, 2023Forecast: 10.1 ft 8:00PM May 29, 2023Highest Forecast: 10.2 ft 2:00AM May 30, 2023Forecast: 10.1 ft 8:00AM May 30, 2023Forecast: 10.1 ft 2:00PM May 30, 2023Forecast: 10.1 ft 8:00PM May 30, 2023Highest Forecast: 10.2 ft 2:00AM May 31, 2023Highest Forecast: 10.2 ft 8:00AM May 31, 2023Highest Forecast: 10.2 ft 2:00PM May 31, 2023Highest Forecast: 10.2 ft 8:00PM May 31, 2023Highest Forecast: 10.2 ft 2:00AM Jun 01, 2023Highest Forecast: 10.2 ft 8:00AM Jun 01, 2023Highest Forecast: 10.2 ft 2:00PM Jun 01, 2023Highest Forecast: 10.2 ft 8:00PM Jun 01, 2023Highest Forecast: 10.2 ft 2:00AM Jun 02, 2023Highest Forecast: 10.2 ft 8:00AM Jun 02, 2023USGS--Water Resources of the United StatesELZP1(plotting HPIRG) Graph Created (5:48AM May 29, 2023)ObservedForecast (issued 11:36AM May 28)Latest observed value: 9.99 ft at 5:15 AM EDT 29-May-2023. Flood Stage is 20 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 Elizabeth Lock and Dam are issued routinely year-round.

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Upstream Gauge - at Charleroi Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Braddock Lock and Dam
Flood Categories (in feet)
Major Flood Stage: 26
Moderate Flood Stage: 23
Flood Stage: 20
Action Stage: 16.5
Low Stage (in feet): -9999

Historic Crests
(1) 32.50 ft on 03/18/1936
(2) 31.60 ft on 11/06/1985
(3) 30.30 ft on 01/20/1996
(4) 29.00 ft on 06/24/1972
(5) 28.50 ft on 10/16/1954
(6) 28.30 ft on 03/07/1967
(7) 27.60 ft on 02/19/2000
(8) 26.77 ft on 04/16/2007
(9) 26.50 ft on 03/06/1963
(10) 25.60 ft on 05/25/1968
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 20.17 ft on 02/05/2022 (P)
(2) 22.87 ft on 03/02/2021 (P)
(3) 20.05 ft on 12/18/2019
(4) 18.10 ft on 02/08/2019
(5) 22.87 ft on 09/11/2018 (P)
(6) 24.53 ft on 02/17/2018
(7) 24.05 ft on 07/30/2017
(8) 23.77 ft on 03/05/2015
(9) 18.43 ft on 03/05/2015
(10) 20.60 ft on 01/26/2010
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 01/01/1980

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

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
32 Elizabeth immediately downstream of Lock 3 floods.
30.5 Water Street, First Street and Second Street in West Elizabeth flood. Flood waters are 4 to 5 feet deep in homes along Water Street.
27 Serious damage to homes and industries in West Elizabeth. Many roads flood.
25.6 Water reaches the first floor of numerous homes from the intersection of First and Border Streets north to the intersection of Mill and First streets in West Elizabeth.
24.05 Water levels reach the flood levels of the flood of July 30, 2017.
23 Industrial Chemical Corporation plant floods.
22 In West Elizabeth basements of numerous homes in the block bounded by First and Water streets begin to flood.
20 Small communities around Lock 3 area begin minor flooding.
18.1 Lock walls overtopped.
17.5 Navigation suspended, lock out of service.
About This Location Collapse

Latitude: 40.262222° N, Longitude: 79.901389° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 20 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 29 717.9 ft 737.9 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:

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) 10 Day (NAEFS) 10 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
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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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