Big River at Richwoods, MO
River level and flood forecast · Jefferson County
Normal1.7 ftas of Mon 2:30 PM
Flow: 74 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
| Action stage | 15 ft |
| Record crest (May 1, 2017) | 33.39 ft |
What floods at each level
From the National Weather Service, highest first.
- 18 ftNear this height, Engledow Road at Upper Blackwell Road near DeSoto are closed upstream of the gage. Just downstream of the gage, Browns Ford Road at Ware Lake Road are closed near this height.
Highest crests on record
- 33.39 ft — May 1, 2017
- 30.33 ft — September 23, 1993
- 28.7 ft — March 19, 2008
- 27.15 ft — June 30, 1957
- 26.42 ft — April 11, 1994
Recent crests: 22.16 ft (March 6, 2026) · 15.74 ft (February 8, 2019) · 17.66 ft (March 30, 2018) · 22.94 ft (February 25, 2018) · 21.08 ft (May 5, 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 (RCHM7); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.