Vermilion River (N-IL) near Leonore

1. 38.00 ft1251st Road is threatened near Leonore.
2. 30.00 ftWater may reach the top of the levee west of the river in Streator. Water may reach the top of the levee at the water treatment plant in Streator. Oakley Avenue may be threatened north of Streator.
3. 29.00 ftMain Street may be threatened in Streator.
4. 25.00 ft18th Road may be threatened north of Streator.
5. 24.00 ftWithout flood protection, multiple roadways and structures may be threatened west of the river near Armory Court in Streator.
6. 21.00 ftWidespread inundation of agricultural land may occur near Streator and Leonore.
7. 16.00 ftWater overtops banks at multiple locations along the river near Streator and Leonore.
8. 14.00 ftWater overtops low-lying banks in Streator.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• February 25, 2021: 14.54 ft
• April 30, 2020: 20.89 ft
• April 26, 2020: 16.58 ft
• January 12, 2020: 16.83 ft
• October 31, 2019: 15.62 ft
• May 2, 2019: 24.50 ft
• February 5, 2019: 20.80 ft
• June 23, 2018: 17.99 ft
• June 12, 2018: 15.43 ft
• February 21, 2018: 17.33 ft

• UpstreamVermilion River at Pontiac
• DownstreamIllinois River at La Salle
• Illinois River at Starved Rock Lock (tailwater)
• Illinois River at Ottawa
• Illinois River at Marseilles Lock (tailwater)
• Illinois River at Marseilles
• Fox River at Dayton
• Illinois River at Seneca
• Illinois River at Henry

Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.

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.