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This probabilistic forecast is issued by the Ohio River Forecast Center.
tab left off Hydrograph tab right off tab left off River at a Glance tab right off tab left off Download tab right off tab left on tab right on
About this graph
Forecasts for the Mahoning River at Youngstown are issued as needed during times of high water, but are not routinely available.
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Upstream Locations Upstream Gauge
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 20.5
Moderate Flood Stage: 16
Flood Stage: 14
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
(1) 26.50 ft on 03/26/1913
(2) 18.60 ft on 01/22/1959
(3) 17.49 ft on 07/23/2003
(4) 16.59 ft on 02/18/2022 (P)
(5) 16.30 ft on 03/02/1910
(6) 15.91 ft on 05/23/2004
(7) 15.80 ft on 02/28/2011
(8) 15.44 ft on 04/13/1994
(9) 15.23 ft on 02/06/2008
(10) 14.92 ft on 01/25/1937
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.59 ft on 02/18/2022 (P)
(2) 14.31 ft on 04/17/2018
(3) 14.73 ft on 01/13/2017
(4) 12.51 ft on 07/12/2013
(5) 15.80 ft on 02/28/2011
(6) 12.10 ft on 03/09/2009
(7) 15.23 ft on 02/06/2008
(8) 10.30 ft on 03/15/2007
(9) 12.40 ft on 03/02/2007
(10) 14.05 ft on 01/06/2005
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
26 FEMA 0.2 percent flood level.
22 Record flooding can be expected from Youngstown to Lowelville. Industrial areas along the Mahoning River will be completely inundated.
21 FEMA 1 percent flood level.
20.5 Niles split in half by flood waters. In Girard Mill Street, Front Street, River Street, and Liberty Street inundated. The Youngstown water department is flooded. Major flooding will occur in industrial areas east of U.S. 680. Floodwaters may reach depths of two to four feet along railraod tracks in this area.
20 River gage flooded.
18 In Niles water inundates over Water Street, West State Street, Butler Avenue, First and Second Streets, and North Main Street. The Meander Creek backup is likely to flood southern portions of town. Homes and businesses south of Walnut Street and East Park Avenue inundated. Homes inundated in Girard along River and Front Streets. In Youngstown portions of eastern Marshall and Mahoning Avenue inundated just north of Highway 680.
17 In Niles State Route 46 flooded and the West Park Avenue Bridge north to the Warren Township line inundated. Belmont Avenue extension inundated near Price Avenue. Meander Creek backup likely to flood McKees Lane and Main Street. The western portion of Youngstown near Austintown floods near Salt Springs Road and Division Street. The eastside of Youngstown along Wilson Avenue north to the city limits is inundated.
16 Roads near the river in Girard and Niles in southern Trumbull County inundated. These include First and Second Streets in Niles, and River and Front Streets in Girard. Businesses south of Olive Street in McDonald inundated. Lowland in Mahoning County inundated.
15 Water inundates property on River and Front Streets in Girard. In Niles State Route 46 flooded and First Street begins to inundate. In Mahoning County flooding will spread into industrial areas along the river.
14 River inundates lowland near the river. Some basement flooding possible.
12 River at bankfull.

Other Real-time and/or Archive Data Sources:
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) 10 Day (NAEFS) 10 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 48 hours.

See the Product Description Document link for more details on the interpretation of the 10 day graphics.

Click individual graphics to enlarge.
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
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