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Hydrograph River at a Glance Download
Allegheny River at Sharpsburg Lock and Dam Pool (ft)Flow (kcfs)Observed: 10.07 ft at 8:00AM Aug 27, 2015Observed: 10.07 ft at 8:15AM Aug 27, 2015Observed: 10.09 ft at 8:30AM Aug 27, 2015Observed: 10.06 ft at 8:45AM Aug 27, 2015Observed: 10.09 ft at 9:00AM Aug 27, 2015Observed: 10.07 ft at 9:15AM Aug 27, 2015Observed: 10.06 ft at 9:30AM Aug 27, 2015Observed: 10.07 ft at 9:45AM Aug 27, 2015Observed: 10.08 ft at 10:00AM Aug 27, 2015Observed: 10.07 ft at 10:15AM Aug 27, 2015Observed: 10.06 ft at 10:30AM Aug 27, 2015Observed: 10.08 ft at 10:45AM Aug 27, 2015Observed: 10.07 ft at 11:00AM Aug 27, 2015Observed: 10.06 ft at 11:15AM Aug 27, 2015Observed: 10.06 ft at 11:30AM Aug 27, 2015Observed: 10.05 ft at 11:45AM Aug 27, 2015Observed: 10.04 ft at 12:00PM Aug 27, 2015Observed: 10.04 ft at 12:15PM Aug 27, 2015Observed: 10.05 ft at 12:30PM Aug 27, 2015Observed: 10.07 ft at 12:45PM Aug 27, 2015Observed: 10.07 ft at 1:00PM Aug 27, 2015Observed: 10.05 ft at 1:15PM Aug 27, 2015Observed: 10.04 ft at 1:30PM Aug 27, 2015Observed: 10.02 ft at 1:45PM Aug 27, 2015Observed: 10.05 ft at 2:00PM Aug 27, 2015Observed: 10.06 ft at 2:15PM Aug 27, 2015Observed: 10 ft at 2:30PM Aug 27, 2015Observed: 10.04 ft at 2:45PM Aug 27, 2015Observed: 10 ft at 3:00PM Aug 27, 2015Observed: 10.03 ft at 3:15PM Aug 27, 2015Observed: 10 ft at 3:30PM Aug 27, 2015Observed: 10 ft at 3:45PM Aug 27, 2015Observed: 10.02 ft at 4:00PM Aug 27, 2015Observed: 9.99 ft at 4:15PM Aug 27, 2015Observed: 9.99 ft at 4:30PM Aug 27, 2015Observed: 9.99 ft at 4:45PM Aug 27, 2015Observed: 9.97 ft at 5:00PM Aug 27, 2015Observed: 10.01 ft at 5:15PM Aug 27, 2015Observed: 9.96 ft at 5:30PM Aug 27, 2015Observed: 9.97 ft at 5:45PM Aug 27, 2015Observed: 9.98 ft at 6:00PM Aug 27, 2015Observed: 9.96 ft at 6:15PM Aug 27, 2015Observed: 9.98 ft at 6:45PM Aug 27, 2015Observed: 9.97 ft at 7:00PM Aug 27, 2015Observed: 9.95 ft at 7:15PM Aug 27, 2015Observed: 9.96 ft at 7:30PM Aug 27, 2015Observed: 9.92 ft at 7:45PM Aug 27, 2015Observed: 9.94 ft at 8:00PM Aug 27, 2015Observed: 9.96 ft at 8:15PM Aug 27, 2015Observed: 9.94 ft at 8:30PM Aug 27, 2015Observed: 9.94 ft at 8:45PM Aug 27, 2015Observed: 9.93 ft at 9:00PM Aug 27, 2015Observed: 9.94 ft at 9:15PM Aug 27, 2015Observed: 9.94 ft at 9:30PM Aug 27, 2015Observed: 9.93 ft at 9:45PM Aug 27, 2015Observed: 9.94 ft at 10:00PM Aug 27, 2015Observed: 9.94 ft at 10:15PM Aug 27, 2015Observed: 9.94 ft at 10:30PM Aug 27, 2015Observed: 9.94 ft at 10:45PM Aug 27, 2015Observed: 9.96 ft at 11:00PM Aug 27, 2015Observed: 9.97 ft at 11:45PM Aug 27, 2015Observed: 9.95 ft at 12:00AM Aug 28, 2015Observed: 10 ft at 12:15AM Aug 28, 2015Observed: 9.96 ft at 12:30AM Aug 28, 2015Observed: 10 ft at 1:00AM Aug 28, 2015Observed: 9.98 ft at 1:15AM Aug 28, 2015Observed: 9.99 ft at 1:30AM Aug 28, 2015Observed: 10 ft at 1:45AM Aug 28, 2015Observed: 10 ft at 2:00AM Aug 28, 2015Observed: 10 ft at 2:15AM Aug 28, 2015Observed: 10.01 ft at 2:30AM Aug 28, 2015Observed: 10.01 ft at 2:45AM Aug 28, 2015Observed: 10.01 ft at 3:00AM Aug 28, 2015Observed: 10.04 ft at 3:15AM Aug 28, 2015Observed: 10.02 ft at 3:30AM Aug 28, 2015Observed: 10.02 ft at 3:45AM Aug 28, 2015Observed: 10.03 ft at 4:00AM Aug 28, 2015Observed: 10.05 ft at 4:15AM Aug 28, 2015Observed: 10.05 ft at 4:30AM Aug 28, 2015Observed: 10.06 ft at 4:45AM Aug 28, 2015Observed: 10.05 ft at 5:00AM Aug 28, 2015Observed: 10.04 ft at 5:15AM Aug 28, 2015Observed: 10.05 ft at 5:30AM Aug 28, 2015Observed: 10.05 ft at 5:45AM Aug 28, 2015Observed: 10.06 ft at 6:00AM Aug 28, 2015Observed: 10.06 ft at 6:15AM Aug 28, 2015Observed: 10.07 ft at 6:30AM Aug 28, 2015Observed: 10.08 ft at 6:45AM Aug 28, 2015Observed: 10.08 ft at 7:15AM Aug 28, 2015Observed: 10.02 ft at 7:30AM Aug 28, 2015Observed: 10.03 ft at 7:45AM Aug 28, 2015Observed: 10.07 ft at 8:00AM Aug 28, 2015Observed: 10.07 ft at 8:15AM Aug 28, 2015Observed: 10.06 ft at 8:30AM Aug 28, 2015Observed: 10.06 ft at 8:45AM Aug 28, 2015Observed: 10.07 ft at 9:00AM Aug 28, 2015Observed: 10.04 ft at 9:15AM Aug 28, 2015Observed: 10.05 ft at 9:30AM Aug 28, 2015Observed: 10.05 ft at 9:45AM Aug 28, 2015Observed: 10.09 ft at 10:00AM Aug 28, 2015Observed: 10.06 ft at 10:45AM Aug 28, 2015Observed: 10.06 ft at 11:00AM Aug 28, 2015Observed: 10.08 ft at 11:15AM Aug 28, 2015Observed: 10.03 ft at 11:30AM Aug 28, 2015Observed: 10.07 ft at 12:15PM Aug 28, 2015Observed: 10.06 ft at 12:30PM Aug 28, 2015Observed: 10.03 ft at 12:45PM Aug 28, 2015Observed: 10.05 ft at 1:00PM Aug 28, 2015Observed: 10.05 ft at 1:15PM Aug 28, 2015Observed: 10.08 ft at 1:30PM Aug 28, 2015Observed: 10.02 ft at 1:45PM Aug 28, 2015Observed: 10.04 ft at 2:00PM Aug 28, 2015Observed: 10.02 ft at 2:15PM Aug 28, 2015Observed: 10.04 ft at 2:30PM Aug 28, 2015Observed: 9.99 ft at 2:45PM Aug 28, 2015Observed: 10.04 ft at 3:00PM Aug 28, 2015Observed: 9.99 ft at 3:30PM Aug 28, 2015Observed: 9.97 ft at 3:45PM Aug 28, 2015Observed: 9.99 ft at 4:00PM Aug 28, 2015Observed: 9.98 ft at 4:15PM Aug 28, 2015Observed: 9.98 ft at 4:30PM Aug 28, 2015Observed: 9.94 ft at 4:45PM Aug 28, 2015Observed: 9.98 ft at 5:00PM Aug 28, 2015Observed: 9.97 ft at 5:15PM Aug 28, 2015Observed: 9.95 ft at 5:30PM Aug 28, 2015Observed: 10 ft at 5:45PM Aug 28, 2015Observed: 9.98 ft at 6:00PM Aug 28, 2015Observed: 9.97 ft at 6:15PM Aug 28, 2015Observed: 9.97 ft at 6:30PM Aug 28, 2015Observed: 10.03 ft at 6:45PM Aug 28, 2015Observed: 9.93 ft at 7:00PM Aug 28, 2015Observed: 9.94 ft at 7:15PM Aug 28, 2015Observed: 9.93 ft at 7:30PM Aug 28, 2015Observed: 9.94 ft at 7:45PM Aug 28, 2015Observed: 9.94 ft at 8:00PM Aug 28, 2015Observed: 9.93 ft at 8:15PM Aug 28, 2015Observed: 9.94 ft at 8:30PM Aug 28, 2015Observed: 9.93 ft at 9:00PM Aug 28, 2015Observed: 9.93 ft at 9:15PM Aug 28, 2015Observed: 9.9 ft at 9:30PM Aug 28, 2015Observed: 9.99 ft at 10:00PM Aug 28, 2015Observed: 9.96 ft at 10:15PM Aug 28, 2015Observed: 9.94 ft at 10:30PM Aug 28, 2015Observed: 9.96 ft at 10:45PM Aug 28, 2015Observed: 9.96 ft at 11:00PM Aug 28, 2015Observed: 9.95 ft at 11:15PM Aug 28, 2015Observed: 9.97 ft at 11:30PM Aug 28, 2015Observed: 9.96 ft at 11:45PM Aug 28, 2015Observed: 9.99 ft at 12:15AM Aug 29, 2015Observed: 9.97 ft at 12:30AM Aug 29, 2015Observed: 9.94 ft at 12:45AM Aug 29, 2015Observed: 9.97 ft at 1:00AM Aug 29, 2015Observed: 10 ft at 1:15AM Aug 29, 2015Observed: 9.98 ft at 1:45AM Aug 29, 2015Observed: 9.99 ft at 2:00AM Aug 29, 2015Observed: 10 ft at 2:15AM Aug 29, 2015Observed: 10.01 ft at 2:30AM Aug 29, 2015Observed: 9.98 ft at 2:45AM Aug 29, 2015Observed: 10 ft at 3:15AM Aug 29, 2015Observed: 10.01 ft at 3:45AM Aug 29, 2015Observed: 10.03 ft at 4:00AM Aug 29, 2015Observed: 10.03 ft at 4:15AM Aug 29, 2015Observed: 10.04 ft at 4:30AM Aug 29, 2015Observed: 10.04 ft at 5:00AM Aug 29, 2015Observed: 10.02 ft at 5:15AM Aug 29, 2015Observed: 10.02 ft at 5:30AM Aug 29, 2015Observed: 10.02 ft at 5:45AM Aug 29, 2015Observed: 10.03 ft at 6:00AM Aug 29, 2015Observed: 10.03 ft at 6:30AM Aug 29, 2015Observed: 10.05 ft at 6:45AM Aug 29, 2015Observed: 10.03 ft at 7:15AM Aug 29, 2015Observed: 10.03 ft at 7:30AM Aug 29, 2015Observed: 10.03 ft at 7:45AM Aug 29, 2015Observed: 10.07 ft at 8:00AM Aug 29, 2015Observed: 10.04 ft at 8:30AM Aug 29, 2015Observed: 10.03 ft at 8:45AM Aug 29, 2015Observed: 10.03 ft at 9:00AM Aug 29, 2015Observed: 10.07 ft at 9:15AM Aug 29, 2015Observed: 10.03 ft at 9:30AM Aug 29, 2015Observed: 10.03 ft at 9:45AM Aug 29, 2015Observed: 10.03 ft at 10:00AM Aug 29, 2015Observed: 10.04 ft at 10:15AM Aug 29, 2015Observed: 10.03 ft at 10:30AM Aug 29, 2015Observed: 10.05 ft at 10:45AM Aug 29, 2015Highest Observation: 10.1 ft at 11:00AM Aug 29, 2015Observed: 10.04 ft at 11:15AM Aug 29, 2015Observed: 10.08 ft at 11:30AM Aug 29, 2015Observed: 10.01 ft at 12:00PM Aug 29, 2015Observed: 10 ft at 12:15PM Aug 29, 2015Observed: 10.01 ft at 12:30PM Aug 29, 2015Observed: 10.05 ft at 12:45PM Aug 29, 2015Observed: 10.03 ft at 1:00PM Aug 29, 2015Observed: 10.02 ft at 1:15PM Aug 29, 2015Observed: 10.07 ft at 1:30PM Aug 29, 2015Observed: 9.99 ft at 2:00PM Aug 29, 2015Observed: 9.92 ft at 2:15PM Aug 29, 2015Observed: 10 ft at 2:30PM Aug 29, 2015Observed: 10.03 ft at 2:45PM Aug 29, 2015Observed: 10.03 ft at 3:00PM Aug 29, 2015Observed: 10.02 ft at 3:15PM Aug 29, 2015Observed: 10.05 ft at 4:00PM Aug 29, 2015Observed: 10.07 ft at 4:15PM Aug 29, 2015Observed: 10.07 ft at 4:45PM Aug 29, 2015Observed: 10.05 ft at 5:00PM Aug 29, 2015Observed: 10.01 ft at 5:15PM Aug 29, 2015Observed: 10.04 ft at 5:30PM Aug 29, 2015Observed: 9.97 ft at 5:45PM Aug 29, 2015Observed: 9.98 ft at 6:00PM Aug 29, 2015Observed: 10.02 ft at 6:15PM Aug 29, 2015Observed: 10 ft at 6:30PM Aug 29, 2015Observed: 10.05 ft at 6:45PM Aug 29, 2015Observed: 10.01 ft at 7:00PM Aug 29, 2015Observed: 10.05 ft at 7:15PM Aug 29, 2015Observed: 9.98 ft at 7:30PM Aug 29, 2015Observed: 10.04 ft at 7:45PM Aug 29, 2015Observed: 9.97 ft at 8:00PM Aug 29, 2015Observed: 10.07 ft at 8:30PM Aug 29, 2015Observed: 10.01 ft at 8:45PM Aug 29, 2015Observed: 10.08 ft at 9:00PM Aug 29, 2015Observed: 10.01 ft at 9:15PM Aug 29, 2015Observed: 10.05 ft at 9:30PM Aug 29, 2015Observed: 10.01 ft at 9:45PM Aug 29, 2015Observed: 10.07 ft at 10:00PM Aug 29, 2015Observed: 10.02 ft at 10:15PM Aug 29, 2015Observed: 10 ft at 10:30PM Aug 29, 2015Observed: 9.98 ft at 10:45PM Aug 29, 2015Observed: 10.06 ft at 11:00PM Aug 29, 2015Observed: 10.05 ft at 11:15PM Aug 29, 2015Observed: 10.04 ft at 11:30PM Aug 29, 2015Observed: 10.02 ft at 11:45PM Aug 29, 2015Observed: 9.99 ft at 12:00AM Aug 30, 2015Observed: 10 ft at 12:45AM Aug 30, 2015Observed: 10.01 ft at 1:00AM Aug 30, 2015Observed: 10 ft at 1:15AM Aug 30, 2015Observed: 9.99 ft at 1:30AM Aug 30, 2015Observed: 10.01 ft at 1:45AM Aug 30, 2015Observed: 10 ft at 2:00AM Aug 30, 2015Observed: 10.02 ft at 2:15AM Aug 30, 2015Observed: 10.03 ft at 2:30AM Aug 30, 2015Observed: 10 ft at 2:45AM Aug 30, 2015Observed: 10.02 ft at 3:00AM Aug 30, 2015Observed: 9.98 ft at 3:15AM Aug 30, 2015Observed: 10.03 ft at 3:30AM Aug 30, 2015Observed: 10 ft at 3:45AM Aug 30, 2015Observed: 10.01 ft at 4:00AM Aug 30, 2015Observed: 10.01 ft at 4:30AM Aug 30, 2015Observed: 10.01 ft at 4:45AM Aug 30, 2015Observed: 10.01 ft at 5:00AM Aug 30, 2015Observed: 10.01 ft at 5:15AM Aug 30, 2015Observed: 10.01 ft at 5:30AM Aug 30, 2015Observed: 10.02 ft at 5:45AM Aug 30, 2015Observed: 10.01 ft at 6:00AM Aug 30, 2015Observed: 10.03 ft at 6:15AM Aug 30, 2015Forecast: 10 ft 8:00AM Aug 30, 2015Forecast: 10 ft 2:00PM Aug 30, 2015Forecast: 10 ft 8:00PM Aug 30, 2015Highest Forecast: 10.1 ft 2:00AM Aug 31, 2015Highest Forecast: 10.1 ft 8:00AM Aug 31, 2015Highest Forecast: 10.1 ft 2:00PM Aug 31, 2015Forecast: 10 ft 8:00PM Aug 31, 2015Forecast: 10 ft 2:00AM Sep 01, 2015Forecast: 10 ft 8:00AM Sep 01, 2015Highest Forecast: 10.1 ft 2:00PM Sep 01, 2015Highest Forecast: 10.1 ft 8:00PM Sep 01, 2015Forecast: 10 ft 2:00AM Sep 02, 2015Forecast: 10 ft 8:00AM Sep 02, 2015Forecast: 10 ft 2:00PM Sep 02, 2015Forecast: 10 ft 8:00PM Sep 02, 2015Forecast: 10 ft 2:00AM Sep 03, 2015Forecast: 10 ft 8:00AM Sep 03, 2015Forecast: 10 ft 2:00PM Sep 03, 2015Forecast: 10 ft 8:00PM Sep 03, 2015SHRP1(plotting HPIRG) Graph Created (7:48AM Aug 30, 2015)ObservedForecast (issued 8:58PM Aug 29)Latest observed value: 10.03 ft at 6:15 AM EDT 30-Aug-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 Allegheny River at Sharpsburg Lock and Dam are issued routinely year-round.

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Upstream Gauge - at C.W. Bill Young Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Pittsburgh
Flood Categories (in feet)
Major Flood Stage: 23
Moderate Flood Stage: 22
Flood Stage: 21
Action Stage: 16.3
Low Stage (in feet): 0

Historic Crests
(1) 26.90 ft on 06/24/1972
(2) 22.90 ft on 01/20/1996
(3) 22.10 ft on 09/18/2004
(4) 18.50 ft on 03/16/2007
(5) 16.20 ft on 03/24/2007

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.20 ft on 03/24/2007
(2) 18.50 ft on 03/16/2007
(3) 22.10 ft on 09/18/2004
(4) 22.90 ft on 01/20/1996
(5) 26.90 ft on 06/24/1972

(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:15
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
23.1 13th Street floods in Sharpsburg.
21.7 Trumbull Construction Co on 51st Street floods.
21.3 Flooding begins near the M & M Gas Station on North Main Street in Sharpsburg.
21 Lock wall overtopped.
19 Navigation suspended, lock out of service.
About This Location Collapse

Latitude: 40.487500° N, Longitude: 79.915278° 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 711.960021972656 ft 732.960021972656 ft  

Current/Historical Observations:

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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: 13-Aug-2015 1:57 AM
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