Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Pittsburgh, PA

Ohio River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EDT) 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 Ohio River at Dashields Lock and Dam are issued routinely year-round.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 32 Moderate Flood Stage: 29 Flood Stage: 25 Action Stage: 19.4 Low Stage (in feet): -9999 Historic Crests (1) 42.80 ft on 03/18/1936 (2) 35.90 ft on 12/31/1942 (3) 33.20 ft on 01/20/1996 (4) 33.00 ft on 06/24/1972 (5) 32.10 ft on 03/07/1975 (6) 31.40 ft on 10/16/1954 (7) 30.00 ft on 03/11/1964 (8) 29.90 ft on 09/19/2004 (9) 28.80 ft on 01/22/1959 (10) 27.50 ft on 12/04/1959 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 25.98 ft on 09/11/2018 (2) 26.03 ft on 02/17/2018 (3) 20.17 ft on 03/24/2007 (4) 22.76 ft on 03/16/2007 (5) 27.18 ft on 01/07/2005 (6) 29.90 ft on 09/19/2004 (7) 19.38 ft on 02/24/2003 (8) 33.20 ft on 01/20/1996 (9) 26.40 ft on 12/31/1990 (10) 24.20 ft on 12/19/1990 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:14 Legend FEMA Layer Gauge Location 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

If you notice any errors in the below information, please contact our Webmaster
48	The railroad tracks flood in the vicinity of Chadwick Street in Sewickley.
45	Water flowing through the railroad underpass reaches the intersection of Chestnut and Chadwick Streets in Sewickley.
37	State Route 51 at Stoops Ferry Road at Narrows Run floods, and the parking lot behind the Sewickley Station on Chestnut Street in Sewickley floods. Water reaches the parking lot of the Paradise Island Bowl on Neville Island.
34	Flooding reaches front yards of homes along Chestnut Avenue between White and Ferry Streets in Sewickley.
33	Water reaches the parking lot of the United States Coast Guard Station.
32	Front River Road on Neville Island begins to flood.
31	Flooding begins in the vicinity of I-79 intersection and Grand Avenue on Neville Island from water backing up into drains.
30	Water is in basements of low-lying houses along front River Road on Neville Island.
28	Backyards of low lying houses along Front River Road on Nevelle Island are flooded. Chestnut Avenue is flooded near intersection with Ferry Street
27	The access roads to Dashileds Locks and Dam and the United States Coast Guard Station begin to flood. The beach area at Paradise Island Bowl on Neville Island begins to flood.
26.4	Lock walls are overtopped.
23	Navigation suspended at Dashields Locks and Dam, lock out of service.
Photos (1) Dashields DCP and River Gage Data Logger (2) View Downstream from Dashields Dam (3) View of Dashields Dam from Lock Wall (4) Top of Wall on U.S. Coast Guard Dock is 33 Feet (5) Dashields Dam Upper Pool lower half of Staff Gage (6) Dashields Dam Upper Pool Upper half staff Gage

About This Location

Latitude: 40.549167° N, Longitude: 80.205833° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 25 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 29 680 ft 705 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: Corps of Engineers (COE) Info for Dashields Lock and Dam U.S. Geological Survey (USGS) Data and Site Info for Dashields Lock and Dam

Additional Information

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

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Ohio Basin Water Resources Outlook Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Hourly Precipitation Drought Statement Snow Information Ensemble River Forecasts

Collaborative Agencies 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 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities