Mahoning River at Youngstown

1. 26.00 ftFEMA 0.2 percent flood level.
2. 22.00 ftRecord flooding can be expected from Youngstown to Lowelville. Industrial areas along the Mahoning River will be completely inundated.
3. 21.00 ftFEMA 1 percent flood level.
4. 20.50 ftNiles 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.
5. 20.00 ftRiver gage flooded.
6. 18.00 ftIn 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.
7. 17.00 ftIn 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.
8. 16.00 ftRoads 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.
9. 15.00 ftWater 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.
10. 14.00 ftRiver inundates lowland near the river. Some basement flooding possible.
11. 12.00 ftRiver at bankfull.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 15, 2026.

Most recent crests

• April 2, 2026: 14.86 ft
• April 3, 2024: 14.37 ft
• February 18, 2022: 16.59 ft
• May 10, 2021: 10.16 ft
• March 29, 2020: 12.53 ft
• June 17, 2019: 13.62 ft
• April 17, 2018: 14.32 ft
• January 13, 2017: 14.67 ft
• February 25, 2016: 10.09 ft
• June 16, 2015: 13.97 ft

• UpstreamMahoning River at Warren
• DownstreamMahoning River at Lowellville
• Crab Creek at Youngstown
• Mosquito Creek at Mosquito Creek Lake
• Mosquito Creek at Mosquito Creek Lake
• Mahoning River at Leavittsburg
• Shenango River at Shenango Dam Tailwater
• Shenango River at Shenango Dam Pool

Forecasts by the Ohio River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.