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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. Reliability of the Forecast: Forecast data shown here are guidance values only. Please refer to your local NWS office. NOTE: Forecasts for the Ohio River at Wellsville are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 16 Moderate Flood Stage: 14 Flood Stage: 11 Action Stage: 9 Low Stage (in feet): 0 Historic Crests (1) 20.90 ft on 01/20/1996 (2) 20.20 ft on 09/18/2004 (3) 16.70 ft on 01/06/2005 (P): Preliminary values subject to further review. Recent Crests (1) 16.70 ft on 01/06/2005 (2) 20.20 ft on 09/18/2004 (3) 20.90 ft on 01/20/1996 (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:16 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

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31	Water overtops the Corp of Engineers flood wall and water begins to flow into the town of Wellsville.
20.2	Flood waters reach the levels of flooding from Hurricane Ivan of September 19, 2004.
18	Water reaches the restaurant near the north end of the Lisbon Street Bridge.
16	Little Yellow Creek reaches bankful at the Lisbon Street Bridge. This area is not protected by the flood wall and the installation of flood gates at the Corps of Engineers local flood protection project.
14	Residential basements flood on Wells Avenue at the north end of town. This area is not protected by the flood wall and the installation of flood gates at the Corps of Engineers local flood protection project.
13	The picnic pavilion at the marina on Little Yellow Creek begins to flood. This area is not protected by the flood wall and the installation of flood gates at the Corps of Engineers flood protection project.
11	The parking lot of the marina outside the river wall begins to flood. This area is not protected by the flood wall and the installation of flood gates at the Corps of Engineers flood protection project.
9	Pumping operations begin at the corps of engineers local flood protection project
7	Preparations begin for activating pumps for local flood protection project

About This Location

Latitude: 40.614167° N, Longitude: 80.641111° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 11 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 29 661.0 ft 672.0 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available

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