Little Blue River near Hollenberg, KS
River level and flood forecast · Washington County
Normal2.9 ftas of Mon 3 PM
The river is 16.1 ft below flood stage (19 ft).
Flow: 474 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sat, Oct 3, 9:26 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 45 ft |
| Moderate flood stage | 19.4 ft |
| Flood stage | 19 ft |
| Action stage | 15 ft |
| Record crest (October 12, 1973) | 23.07 ft |
What floods at each level
From the National Weather Service, highest first.
- 44.3 ftRailroad tracks on the west side of Hollenberg flood.
- 35.5 ftHollenberg Avenue bridge floods.
- 31.34 ftBridge deck floods on east end of bridge.
- 27.7 ftFlood waters reach low steel of Hollenberg Avenue bridge on upstream side of bridge.
- 23.83 ftThunder Road floods about 200 yards south of Hollenberg Avenue.
- 20.83 ftRight bank floods just south of the Hollenberg Avenue bridge.
- 19.39 ftHollenberg avenue floods about a quarter mile west of the railroad tracks.
- 19 ftFlood waters reach the edge of hollenberg avenue about a quarter mile west of the railroad tracks. Farm fields west of hollenberg are under 2 to 5 feet of water.
Highest crests on record
- 23.07 ft — October 12, 1973
- 22.97 ft — May 7, 2015
- 21.2099990844727 ft — July 26, 1992
- 21 ft — June 13, 1984
- 20.67 ft — June 24, 2003
Recent crests: 5.69 ft (August 28, 2023) · 7.46 ft (July 8, 2022) · 8.22 ft (March 15, 2021) · 15.03 ft (October 3, 2019) · 14.78 ft (March 14, 2019)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (HBGK1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.