Mackinaw River near Green Valley, IL
River level and flood forecast · Tazewell County
Normal14.0 ftas of Mon 2:45 PM
Flow: 111 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.
Highest crests on record
- 29.18 ft — December 31, 2015
- 28.48 ft — April 20, 2013
- 28.44 ft — January 16, 2005
- 28.29 ft — September 16, 1993
- 28.19 ft — May 4, 2019
Recent crests: 26.74 ft (August 15, 2026) · 23.74 ft (June 18, 2026) · 24.04 ft (June 12, 2026) · 18.46 ft (April 28, 2026) · 23.38 ft (April 4, 2026)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (GNVI2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.