Scioto River at Prospect

1. 22.00 ftFEMA 0.2 percent flood level. Comparable to the 1913 flood of record. Devastating flooding to Prospect and communities north.
2. 20.00 ftFloodwaters inundate most of northern, western, and southern Prospect.
3. 19.50 ftFEMA 1 percent flood level.
4. 18.00 ftFlood waters threatens the Route 47 bridge with widespread flooding along northern parts of town west of 5th Street. Flood waters threaten Main Street in downtown Prospect. Many roads in and out of town are inundated. Homes in northern Deleware County are inundated along Route 257 north.
5. 15.00 ftWidespread flooding occurs northern parts of Prospect. The most significant flooding occurs on north Elm Street, Northeast Street, Sellers Street, and Mulberry Street. Both River Road and Route 257 north of Route 36 are impassable with water several feet deep in areas. Homes become inundated.
6. 14.00 ftLong stretches of both River Road and Route 257 are flooded in northwest Deleware county, from near Route 36 to the Marion County line.
7. 13.50 ftFlooding occurs along several streets north of Market Street including North Elm Street, Northeast Street, Sellers Street, and Mulberry Street. Extensive crop flooding. Highway 203 is covered with flood waters for 2 miles.
8. 13.00 ftWater covers large stretches of River Road and portions of Route 257 north of Route 36 in northwest Delaware county.
9. 12.00 ftHighway 203 inaccessible north of Prospect. In Prospect, Elm, West River, Prospect, and Upper Sandusky Roads are flood. Water covers portions of River Road north of Hoskins Road in northwest Deleware County. Lowland flooding also begins along State Route 257 north of Route 36.
10. 10.00 ftHighway 203 is inaccessible north of Prospect. Flooding occurs near Elm Street in northern parts of Prospect.
11. 9.00 ftWater inundates low portions of Highway 203 north of Prospect.

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 5, 2025: 13.16 ft
• April 5, 2024: 12.78 ft
• February 20, 2022: 11.99 ft
• June 20, 2019: 14.31 ft
• November 5, 2018: 12.12 ft
• November 21, 2017: 11.39 ft
• June 24, 2017: 9.12 ft
• May 8, 2017: 10.86 ft
• January 15, 2017: 10.07 ft
• June 16, 2015: 13.99 ft

• UpstreamScioto River at Larue
• DownstreamScioto River at O'Shaughnessy Reservoir
• Olentangy River at Delaware Lake
• Olentangy River at Delaware
• Mill Creek
• Alum Creek
• Olentangy River at Claridon
• Scioto River at Dublin

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.