Big River at Irondale, MO
River level and flood forecast · Washington County
Normal0.3 ftas of Mon 1:15 PM
Flow: 14 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
- 28.95 ft — November 14, 1993
- 27.92 ft — November 1, 1972
- 25.62 ft — May 8, 2009
- 25.57 ft — November 19, 1985
- 24.2 ft — October 30, 2009
Recent crests: 20.73 ft (March 5, 2026) · 17.47 ft (January 11, 2020) · 12.94 ft (April 26, 2019) · 17.19 ft (February 24, 2018) · 22.84 ft (April 30, 2017)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (IRNM7); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.