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Hydrograph River at a Glance Download
Allegheny River at Sharpsburg Lock and Dam Pool (ft)Flow (kcfs)Observed: 12.26 ft at 4:30AM Dec 18, 2014Observed: 12.27 ft at 4:45AM Dec 18, 2014Observed: 12.28 ft at 5:00AM Dec 18, 2014Observed: 12.28 ft at 5:15AM Dec 18, 2014Observed: 12.3 ft at 5:30AM Dec 18, 2014Observed: 12.33 ft at 5:45AM Dec 18, 2014Observed: 12.35 ft at 6:00AM Dec 18, 2014Observed: 12.35 ft at 6:15AM Dec 18, 2014Observed: 12.35 ft at 6:30AM Dec 18, 2014Observed: 12.37 ft at 6:45AM Dec 18, 2014Observed: 12.38 ft at 7:00AM Dec 18, 2014Observed: 12.41 ft at 7:30AM Dec 18, 2014Observed: 12.45 ft at 7:45AM Dec 18, 2014Observed: 12.44 ft at 8:00AM Dec 18, 2014Observed: 12.46 ft at 8:15AM Dec 18, 2014Observed: 12.49 ft at 9:00AM Dec 18, 2014Observed: 12.5 ft at 9:15AM Dec 18, 2014Observed: 12.52 ft at 9:30AM Dec 18, 2014Observed: 12.53 ft at 9:45AM Dec 18, 2014Observed: 12.55 ft at 10:00AM Dec 18, 2014Observed: 12.56 ft at 10:15AM Dec 18, 2014Observed: 12.57 ft at 10:30AM Dec 18, 2014Observed: 12.58 ft at 10:45AM Dec 18, 2014Observed: 12.59 ft at 11:00AM Dec 18, 2014Observed: 12.6 ft at 11:15AM Dec 18, 2014Observed: 12.62 ft at 11:30AM Dec 18, 2014Observed: 12.62 ft at 11:45AM Dec 18, 2014Observed: 12.64 ft at 12:00PM Dec 18, 2014Observed: 12.64 ft at 12:15PM Dec 18, 2014Observed: 12.65 ft at 12:30PM Dec 18, 2014Observed: 12.65 ft at 12:45PM Dec 18, 2014Observed: 12.66 ft at 1:00PM Dec 18, 2014Observed: 12.67 ft at 1:15PM Dec 18, 2014Observed: 12.67 ft at 1:30PM Dec 18, 2014Observed: 12.67 ft at 1:45PM Dec 18, 2014Observed: 12.67 ft at 2:00PM Dec 18, 2014Observed: 12.68 ft at 2:15PM Dec 18, 2014Observed: 12.67 ft at 2:30PM Dec 18, 2014Observed: 12.67 ft at 2:45PM Dec 18, 2014Observed: 12.66 ft at 3:00PM Dec 18, 2014Observed: 12.68 ft at 3:15PM Dec 18, 2014Observed: 12.68 ft at 3:30PM Dec 18, 2014Observed: 12.68 ft at 3:45PM Dec 18, 2014Observed: 12.66 ft at 4:00PM Dec 18, 2014Observed: 12.67 ft at 4:15PM Dec 18, 2014Observed: 12.66 ft at 4:30PM Dec 18, 2014Observed: 12.67 ft at 4:45PM Dec 18, 2014Observed: 12.66 ft at 5:15PM Dec 18, 2014Observed: 12.65 ft at 5:30PM Dec 18, 2014Observed: 12.65 ft at 5:45PM Dec 18, 2014Observed: 12.65 ft at 6:30PM Dec 18, 2014Observed: 12.63 ft at 6:45PM Dec 18, 2014Observed: 12.64 ft at 7:00PM Dec 18, 2014Observed: 12.63 ft at 7:15PM Dec 18, 2014Observed: 12.62 ft at 7:30PM Dec 18, 2014Observed: 12.62 ft at 7:45PM Dec 18, 2014Observed: 12.62 ft at 8:00PM Dec 18, 2014Observed: 12.62 ft at 8:15PM Dec 18, 2014Observed: 12.62 ft at 8:30PM Dec 18, 2014Observed: 12.61 ft at 9:00PM Dec 18, 2014Observed: 12.62 ft at 9:15PM Dec 18, 2014Observed: 12.62 ft at 9:30PM Dec 18, 2014Observed: 12.62 ft at 9:45PM Dec 18, 2014Observed: 12.62 ft at 10:00PM Dec 18, 2014Observed: 12.62 ft at 10:15PM Dec 18, 2014Observed: 12.62 ft at 10:30PM Dec 18, 2014Observed: 12.62 ft at 11:00PM Dec 18, 2014Observed: 12.63 ft at 11:15PM Dec 18, 2014Observed: 12.63 ft at 11:30PM Dec 18, 2014Observed: 12.64 ft at 11:45PM Dec 18, 2014Observed: 12.65 ft at 12:00AM Dec 19, 2014Observed: 12.65 ft at 12:15AM Dec 19, 2014Observed: 12.65 ft at 12:30AM Dec 19, 2014Observed: 12.65 ft at 12:45AM Dec 19, 2014Observed: 12.64 ft at 1:00AM Dec 19, 2014Observed: 12.66 ft at 1:15AM Dec 19, 2014Observed: 12.67 ft at 1:30AM Dec 19, 2014Observed: 12.68 ft at 1:45AM Dec 19, 2014Observed: 12.7 ft at 2:00AM Dec 19, 2014Observed: 12.7 ft at 2:15AM Dec 19, 2014Observed: 12.71 ft at 2:30AM Dec 19, 2014Observed: 12.73 ft at 3:00AM Dec 19, 2014Observed: 12.74 ft at 3:15AM Dec 19, 2014Observed: 12.75 ft at 3:30AM Dec 19, 2014Observed: 12.76 ft at 3:45AM Dec 19, 2014Observed: 12.77 ft at 4:00AM Dec 19, 2014Observed: 12.79 ft at 4:30AM Dec 19, 2014Observed: 12.8 ft at 4:45AM Dec 19, 2014Observed: 12.8 ft at 5:00AM Dec 19, 2014Observed: 12.82 ft at 5:15AM Dec 19, 2014Observed: 12.82 ft at 5:30AM Dec 19, 2014Observed: 12.82 ft at 5:45AM Dec 19, 2014Observed: 12.83 ft at 6:00AM Dec 19, 2014Observed: 12.84 ft at 6:15AM Dec 19, 2014Observed: 12.84 ft at 6:30AM Dec 19, 2014Observed: 12.84 ft at 6:45AM Dec 19, 2014Observed: 12.85 ft at 7:00AM Dec 19, 2014Observed: 12.86 ft at 7:30AM Dec 19, 2014Observed: 12.86 ft at 7:45AM Dec 19, 2014Observed: 12.87 ft at 8:00AM Dec 19, 2014Highest Observation: 12.88 ft at 8:30AM Dec 19, 2014Observed: 12.87 ft at 9:00AM Dec 19, 2014Observed: 12.87 ft at 9:15AM Dec 19, 2014Observed: 12.87 ft at 9:30AM Dec 19, 2014Observed: 12.87 ft at 9:45AM Dec 19, 2014Observed: 12.86 ft at 10:00AM Dec 19, 2014Observed: 12.86 ft at 10:30AM Dec 19, 2014Observed: 12.83 ft at 10:45AM Dec 19, 2014Observed: 12.79 ft at 11:15AM Dec 19, 2014Observed: 12.78 ft at 11:30AM Dec 19, 2014Observed: 12.76 ft at 11:45AM Dec 19, 2014Observed: 12.78 ft at 12:00PM Dec 19, 2014Observed: 12.78 ft at 12:15PM Dec 19, 2014Observed: 12.79 ft at 12:30PM Dec 19, 2014Observed: 12.79 ft at 12:45PM Dec 19, 2014Observed: 12.81 ft at 1:00PM Dec 19, 2014Observed: 12.82 ft at 1:15PM Dec 19, 2014Observed: 12.85 ft at 1:30PM Dec 19, 2014Observed: 12.86 ft at 1:45PM Dec 19, 2014Observed: 12.85 ft at 2:00PM Dec 19, 2014Observed: 12.86 ft at 2:15PM Dec 19, 2014Observed: 12.87 ft at 2:30PM Dec 19, 2014Observed: 12.86 ft at 2:45PM Dec 19, 2014Highest Observation: 12.88 ft at 3:00PM Dec 19, 2014Observed: 12.86 ft at 3:15PM Dec 19, 2014Highest Observation: 12.88 ft at 3:30PM Dec 19, 2014Observed: 12.86 ft at 3:45PM Dec 19, 2014Observed: 12.86 ft at 4:00PM Dec 19, 2014Observed: 12.85 ft at 4:15PM Dec 19, 2014Observed: 12.84 ft at 4:30PM Dec 19, 2014Observed: 12.82 ft at 4:45PM Dec 19, 2014Observed: 12.81 ft at 5:00PM Dec 19, 2014Observed: 12.81 ft at 5:15PM Dec 19, 2014Observed: 12.81 ft at 5:30PM Dec 19, 2014Observed: 12.78 ft at 5:45PM Dec 19, 2014Observed: 12.78 ft at 6:00PM Dec 19, 2014Observed: 12.76 ft at 6:15PM Dec 19, 2014Observed: 12.74 ft at 6:45PM Dec 19, 2014Observed: 12.72 ft at 7:00PM Dec 19, 2014Observed: 12.72 ft at 7:15PM Dec 19, 2014Observed: 12.71 ft at 7:30PM Dec 19, 2014Observed: 12.7 ft at 7:45PM Dec 19, 2014Observed: 12.69 ft at 8:00PM Dec 19, 2014Observed: 12.69 ft at 8:15PM Dec 19, 2014Observed: 12.67 ft at 8:45PM Dec 19, 2014Observed: 12.68 ft at 9:00PM Dec 19, 2014Observed: 12.66 ft at 9:15PM Dec 19, 2014Observed: 12.65 ft at 9:30PM Dec 19, 2014Observed: 12.65 ft at 10:00PM Dec 19, 2014Observed: 12.65 ft at 10:15PM Dec 19, 2014Observed: 12.65 ft at 10:30PM Dec 19, 2014Observed: 12.64 ft at 10:45PM Dec 19, 2014Observed: 12.64 ft at 11:00PM Dec 19, 2014Observed: 12.65 ft at 11:15PM Dec 19, 2014Observed: 12.65 ft at 11:30PM Dec 19, 2014Observed: 12.65 ft at 11:45PM Dec 19, 2014Observed: 12.65 ft at 12:00AM Dec 20, 2014Observed: 12.65 ft at 12:15AM Dec 20, 2014Observed: 12.66 ft at 12:30AM Dec 20, 2014Observed: 12.66 ft at 1:00AM Dec 20, 2014Observed: 12.67 ft at 1:15AM Dec 20, 2014Observed: 12.69 ft at 1:30AM Dec 20, 2014Observed: 12.67 ft at 1:45AM Dec 20, 2014Observed: 12.71 ft at 2:00AM Dec 20, 2014Observed: 12.68 ft at 2:15AM Dec 20, 2014Observed: 12.71 ft at 2:30AM Dec 20, 2014Observed: 12.68 ft at 2:45AM Dec 20, 2014Observed: 12.71 ft at 3:00AM Dec 20, 2014Observed: 12.71 ft at 3:15AM Dec 20, 2014Observed: 12.69 ft at 3:30AM Dec 20, 2014Observed: 12.72 ft at 3:45AM Dec 20, 2014Observed: 12.72 ft at 4:00AM Dec 20, 2014Observed: 12.72 ft at 4:15AM Dec 20, 2014Observed: 12.72 ft at 4:30AM Dec 20, 2014Observed: 12.72 ft at 4:45AM Dec 20, 2014Observed: 12.72 ft at 5:00AM Dec 20, 2014Observed: 12.72 ft at 5:15AM Dec 20, 2014Observed: 12.73 ft at 5:30AM Dec 20, 2014Observed: 12.73 ft at 5:45AM Dec 20, 2014Observed: 12.73 ft at 6:00AM Dec 20, 2014Observed: 12.74 ft at 6:15AM Dec 20, 2014Observed: 12.74 ft at 6:30AM Dec 20, 2014Observed: 12.75 ft at 6:45AM Dec 20, 2014Observed: 12.75 ft at 7:00AM Dec 20, 2014Observed: 12.77 ft at 7:15AM Dec 20, 2014Observed: 12.77 ft at 7:30AM Dec 20, 2014Observed: 12.75 ft at 7:45AM Dec 20, 2014Observed: 12.76 ft at 8:00AM Dec 20, 2014Observed: 12.76 ft at 8:15AM Dec 20, 2014Observed: 12.76 ft at 8:30AM Dec 20, 2014Observed: 12.76 ft at 8:45AM Dec 20, 2014Observed: 12.78 ft at 9:15AM Dec 20, 2014Observed: 12.78 ft at 9:30AM Dec 20, 2014Observed: 12.78 ft at 10:00AM Dec 20, 2014Observed: 12.78 ft at 10:15AM Dec 20, 2014Observed: 12.78 ft at 10:30AM Dec 20, 2014Observed: 12.78 ft at 10:45AM Dec 20, 2014Observed: 12.78 ft at 11:00AM Dec 20, 2014Observed: 12.78 ft at 11:15AM Dec 20, 2014Observed: 12.79 ft at 11:30AM Dec 20, 2014Observed: 12.79 ft at 11:45AM Dec 20, 2014Observed: 12.79 ft at 12:00PM Dec 20, 2014Observed: 12.79 ft at 12:15PM Dec 20, 2014Observed: 12.79 ft at 12:30PM Dec 20, 2014Observed: 12.79 ft at 12:45PM Dec 20, 2014Observed: 12.79 ft at 1:00PM Dec 20, 2014Observed: 12.8 ft at 1:30PM Dec 20, 2014Observed: 12.79 ft at 1:45PM Dec 20, 2014Observed: 12.79 ft at 2:00PM Dec 20, 2014Observed: 12.81 ft at 2:15PM Dec 20, 2014Observed: 12.79 ft at 2:30PM Dec 20, 2014Observed: 12.78 ft at 2:45PM Dec 20, 2014Observed: 12.78 ft at 3:00PM Dec 20, 2014Observed: 12.78 ft at 3:15PM Dec 20, 2014Observed: 12.77 ft at 3:30PM Dec 20, 2014Observed: 12.77 ft at 3:45PM Dec 20, 2014Observed: 12.79 ft at 4:00PM Dec 20, 2014Observed: 12.76 ft at 4:15PM Dec 20, 2014Observed: 12.75 ft at 4:30PM Dec 20, 2014Observed: 12.75 ft at 4:45PM Dec 20, 2014Observed: 12.74 ft at 5:00PM Dec 20, 2014Observed: 12.73 ft at 5:15PM Dec 20, 2014Observed: 12.72 ft at 5:30PM Dec 20, 2014Observed: 12.71 ft at 5:45PM Dec 20, 2014Observed: 12.71 ft at 6:00PM Dec 20, 2014Observed: 12.7 ft at 6:15PM Dec 20, 2014Observed: 12.7 ft at 6:30PM Dec 20, 2014Observed: 12.68 ft at 6:45PM Dec 20, 2014Observed: 12.67 ft at 7:00PM Dec 20, 2014Observed: 12.66 ft at 7:15PM Dec 20, 2014Observed: 12.64 ft at 7:45PM Dec 20, 2014Observed: 12.63 ft at 8:00PM Dec 20, 2014Observed: 12.61 ft at 8:15PM Dec 20, 2014Observed: 12.61 ft at 8:30PM Dec 20, 2014Observed: 12.59 ft at 8:45PM Dec 20, 2014Observed: 12.59 ft at 9:00PM Dec 20, 2014Observed: 12.61 ft at 9:15PM Dec 20, 2014Observed: 12.57 ft at 9:30PM Dec 20, 2014Observed: 12.54 ft at 10:00PM Dec 20, 2014Observed: 12.53 ft at 10:15PM Dec 20, 2014Observed: 12.52 ft at 10:30PM Dec 20, 2014Observed: 12.54 ft at 10:45PM Dec 20, 2014Observed: 12.53 ft at 11:00PM Dec 20, 2014Observed: 12.5 ft at 11:15PM Dec 20, 2014Observed: 12.5 ft at 11:30PM Dec 20, 2014Observed: 12.5 ft at 11:45PM Dec 20, 2014Observed: 12.49 ft at 12:00AM Dec 21, 2014Observed: 12.49 ft at 12:15AM Dec 21, 2014Observed: 12.49 ft at 12:30AM Dec 21, 2014Observed: 12.49 ft at 12:45AM Dec 21, 2014Observed: 12.51 ft at 1:00AM Dec 21, 2014Observed: 12.5 ft at 1:15AM Dec 21, 2014Observed: 12.49 ft at 1:30AM Dec 21, 2014Observed: 12.5 ft at 1:45AM Dec 21, 2014Observed: 12.5 ft at 2:00AM Dec 21, 2014Observed: 12.5 ft at 2:15AM Dec 21, 2014Observed: 12.5 ft at 2:30AM Dec 21, 2014Observed: 12.5 ft at 2:45AM Dec 21, 2014Observed: 12.5 ft at 3:00AM Dec 21, 2014Observed: 12.5 ft at 3:15AM Dec 21, 2014Observed: 12.5 ft at 3:30AM Dec 21, 2014Forecast: 12.3 ft 7:00AM Dec 21, 2014Forecast: 12.4 ft 1:00PM Dec 21, 2014Highest Forecast: 12.7 ft 7:00PM Dec 21, 2014Forecast: 12.6 ft 1:00AM Dec 22, 2014Forecast: 12.5 ft 7:00AM Dec 22, 2014Forecast: 12.3 ft 1:00PM Dec 22, 2014Forecast: 12.3 ft 7:00PM Dec 22, 2014Forecast: 12.2 ft 1:00AM Dec 23, 2014Forecast: 12.2 ft 7:00AM Dec 23, 2014Forecast: 12.1 ft 1:00PM Dec 23, 2014Forecast: 12.1 ft 7:00PM Dec 23, 2014Forecast: 12 ft 1:00AM Dec 24, 2014Forecast: 12 ft 7:00AM Dec 24, 2014Forecast: 11.8 ft 1:00PM Dec 24, 2014Forecast: 11.7 ft 7:00PM Dec 24, 2014Forecast: 11.7 ft 1:00AM Dec 25, 2014Forecast: 11.7 ft 7:00AM Dec 25, 2014Forecast: 11.7 ft 1:00PM Dec 25, 2014Forecast: 11.7 ft 7:00PM Dec 25, 2014SHRP1(plotting HPIRG) Graph Created (4:18AM Dec 21, 2014)ObservedForecast (issued 8:23PM Dec 20)Latest observed value: 12.5 ft at 3:30 AM EST 21-Dec-2014. Flood Stage is 21 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
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
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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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: 20-Nov-2014 2:01 AM
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