Grand River near Sumner, MO
River level and flood forecast · Livingston County
Normal10.4 ftas of Mon 12:45 PM
The river is 15.6 ft below flood stage (26 ft).
Flow: 1,960 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Tue, Oct 6, 7:10 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 40 ft |
| Moderate flood stage | 28 ft |
| Flood stage | 26 ft |
| Action stage | 21 ft |
| Record crest (July 10, 1993) | 42.52 ft |
What floods at each level
From the National Weather Service, highest first.
- 52 ftWater reaches the road surface of State Highway 139 bridge.
- 45 ftWater reaches the bottom of State Highway 139 bridge.
- 44 ftWater reaches the bottom of the Burlington Northern Railroad bridge which is located just upstream from the State Highway 139 bridge.
- 40 ftHomes in northeast Sumner begin to flood.
- 37 ftState Highway 139 floods a half mile east of Sumner.
- 28 ftRural roads are under water.
- 26 ftRural land adjacent to the river is flooded.
- 23 ftBottomland 1 to 2 miles south of the gage begins to flood.
Highest crests on record
- 42.52 ft — July 10, 1993
- 41.35 ft — May 30, 2019
- 40.02 ft — June 28, 2008
- 39.97 ft — May 10, 2007
- 39.57 ft — May 13, 2002
Recent crests: 37.13 ft (June 13, 2026) · 32.05 ft (June 7, 2026) · 37.04 ft (May 20, 2026) · 29.87 ft (April 28, 2026) · 32.6 ft (July 27, 2025)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SNZM7); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.