Big Blue River at Marysville, KS
River level and flood forecast · Marshall County
Normal15.4 ftas of Mon 3:30 PM
The river is 19.6 ft below flood stage (35 ft).
Flow: 1,050 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Thu, Oct 1, 2:19 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 43 ft |
| Moderate flood stage | 38.2 ft |
| Flood stage | 35 ft |
| Action stage | 30 ft |
| Record crest (June 9, 1941) | 45.39 ft |
What floods at each level
From the National Weather Service, highest first.
- 40 ftFlooding occurs in the southern and western sections of Marysville.
- 38.2 ftHighways U.S. 36 and U.S. 77 east of the river flood.
- 35 ftLow lands near the river flood from Oketo to Blue rapids.
Highest crests on record
- 45.39 ft — June 9, 1941
- 43.86 ft — October 13, 1973
- 43.79 ft — May 3, 1903
- 40.91 ft — October 2, 1950
- 40.44 ft — July 8, 1954
Recent crests: 28.81 ft (May 26, 2022) · 25.58 ft (March 15, 2021) · 31.32 ft (June 20, 2020) · 33.33 ft (March 18, 2019) · 32.97 ft (September 5, 2018)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MRYK1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.