Neosho River at Neosho Rapids, KS
River level and flood forecast · Lyon County
Normal8.6 ftas of Mon 2:30 PM
The river is 13.4 ft below flood stage (22 ft).
Flow: 1,620 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sat, Oct 3, 1:47 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 44 ft |
| Moderate flood stage | 23 ft |
| Flood stage | 22 ft |
| Action stage | 17 ft |
| Record crest (July 11, 1951) | 34.3 ft |
What floods at each level
From the National Weather Service, highest first.
- 37 ftHomes on South Street are threatened by flood waters.
- 31 ftSouth Street near the river floods.
- 26 ftWater covers large areas over both banks.
- 23 ftWater overtops Road 145 on the west side of the bridge over the Neosho River.
- 22 ftLow lying areas along the river flood.
Highest crests on record
- 34.3 ft — July 11, 1951
- 31.15 ft — November 2, 1998
- 29.92 ft — June 21, 1948
- 29.01 ft — October 11, 1985
- 28.2 ft — November 23, 1944
Recent crests: 26.11 ft (June 5, 2025) · 23.13 ft (May 28, 2025) · 10.55 ft (February 28, 2023) · 23.23 ft (June 8, 2022) · 23.26 ft (June 2, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (NEOK1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.