Marais Des Cygnes River near Trading Post, KS
River level and flood forecast · Linn County
Normal7.0 ftas of Mon 2:45 PM
The river is 20.0 ft below flood stage (27 ft).
Flow: 1,530 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
| Major flood stage | 40 ft |
| Moderate flood stage | 29 ft |
| Flood stage | 27 ft |
| Action stage | 22 ft |
| Record crest (May 26, 2019) | 38.55 ft |
What floods at each level
From the National Weather Service, highest first.
- 29 ftStateline Road is flooded north of the river gauge.
- 27 ftFlooding of low-lying farmland occurs and water begins to approach Stateline Road north of the river gauge.
Highest crests on record
- 38.55 ft — May 26, 2019
- 36.93 ft — October 13, 2018
- 36.11 ft — April 29, 2024
- 35.71 ft — May 1, 2009
- 33.11 ft — May 2, 2019
Recent crests: 28.77 ft (June 9, 2025) · 36.11 ft (April 29, 2024) · 27.95 ft (June 3, 2022) · 28.44 ft (May 7, 2022) · 27.18 ft (July 2, 2021)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (TPOK1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.