Sangamon River near Oakford, IL
River level and flood forecast · Mason County
Normal456.4 ftas of Mon 3:45 PM
The river is 14.6 ft below flood stage (471 ft).
Flow: 443 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 478.5 ft |
| Moderate flood stage | 472.9 ft |
| Flood stage | 471 ft |
| Action stage | 469 ft |
| Record crest (May 20, 1943) | 478.51 ft |
What floods at each level
From the National Weather Service, highest first.
- 476.9 ftWater reaches the top of Mason, Menard Special, and Oakford levees.
- 476.3 ftWater overtops the South Sangamon East Levee.
- 471 ftFlooding begins to agricultural areas not protected by levees.
Highest crests on record
- 478.51 ft — May 20, 1943
- 477.67 ft — January 1, 2016
- 476.73 ft — May 15, 2002
- 476.53 ft — December 5, 1982
- 476.09 ft — April 15, 1994
Recent crests: 468.26 ft (April 30, 2024) · 473.49 ft (January 25, 2024) · 468.7 ft (February 23, 2022) · 469.58 ft (July 18, 2021) · 472.67 ft (June 30, 2021)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (OKFI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.