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When flooded turn around don't drown
FloodSmart
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Hydrograph River at a Glance Download
Ohio River at Wellsville Stage (ft)Flow (kcfs)USGS--Water Resources of the United StatesWLVO1(plotting HGIRZ) Graph Created (6:03AM Aug 4, 2021)Flood Stage is 11 ft
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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 - at Montgomery Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at New Cumberland Lock and Dam
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.
Zoom Level:16
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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
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 Collapse

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 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) 7 Day (NAEFS) 7 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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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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