N F Solomon River at Portis, KS
River level and flood forecast · Osborne County
Normal3.9 ftas of Mon 2:30 PM
The river is 11.1 ft below flood stage (15 ft).
Flow: 23 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 | 25 ft |
| Moderate flood stage | 20 ft |
| Flood stage | 15 ft |
| Action stage | 13 ft |
| Record crest (May 25, 2008) | 25.71 ft |
What floods at each level
From the National Weather Service, highest first.
- 25 ftWidespread flooding occurs in low lying areas and over several county roads. The town of Portis and the bridge on Highway 281 are not threatened by flooding. A record flood of 28.5 feet occurred in July of 1951.
- 20 ftThere will be significant flooding over county road 362 and South 80th Avenue.
- 17.5 ftThe north approach to South 80th Avenue will flood and the flooding over county road 362 will worsen.
- 15 ftThe southeast bank overflows into agricultural and pasture lowlands. Water rises over county road 362.
Highest crests on record
- 25.71 ft — May 25, 2008
- 23.43 ft — July 21, 1993
- 23 ft — May 29, 1995
- 22.99 ft — June 21, 2010
- 22.95 ft — August 16, 1968
Recent crests: 9.75 ft (September 22, 2025) · 10.34 ft (June 2, 2024) · 9.07 ft (July 5, 2023) · 12.84 ft (May 1, 2022) · 13.92 ft (May 27, 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 (PTIK1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.