Perry Creek near Millnerville, IA
River level and flood forecast · Plymouth County
Normal1.0 ftas of Mon 2:45 PM
The river is 7.0 ft below flood stage (8 ft).
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 | 12 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 8 ft |
| Action stage | 6 ft |
| Record crest (June 17, 2014) | 14.54 ft |
What floods at each level
From the National Weather Service, highest first.
- 22.5 ftThe bridge on 270th St is overtopped.
- 20 ftThe bridge on K22 is overtopped and the yards near 270th St.
- 18 ftK22 south of gauge begins to flood.
- 15.5 ftThe lowest portion of 250th St begins to flood.
- 8 ftSignificant flooding of agricultural land begins.
- 7 ftThe lowest banks are overtopped.
Highest crests on record
- 14.54 ft — June 17, 2014
- 12.31 ft — May 22, 2004
- 12.08 ft — March 13, 2019
- 11.73 ft — July 30, 2010
- 11.6 ft — March 20, 2001
Recent crests: 8.24 ft (July 29, 2025) · 4.13 ft (May 7, 2024) · 7.96 ft (February 1, 2023) · 6.89 ft (March 20, 2020) · 12.08 ft (March 13, 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 (PCMI4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.