Perry Creek at Sioux City, IA
River level and flood forecast · Woodbury County
Normal6.6 ftas of Mon 3 PM
The river is 17.4 ft below flood stage (24 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 | 28 ft |
| Moderate flood stage | 26 ft |
| Flood stage | 24 ft |
| Action stage | 20 ft |
| Record crest (May 19, 1990) | 28.54 ft |
What floods at each level
From the National Weather Service, highest first.
- 29 ftThe 38th St bridge is overtopped.
- 28 ftThe north levee near Hamilton and Stone Park Blvd is overtopped and residential areas near 38th begin to flood.
- 27 ftThe bridge on Stone Park Blvd may be overtopped.
- 26.5 ftStructures between Hamilton and Stone Park Blvd may be in danger of flooding should levee protection fail and some backyards near 38th St may begin to flood.
- 26 ftFlooding begins to affect Dearborn Street between 38th Street and Stone Park Boulevard.
- 24.5 ftWater reaches the bottom of the bridge on Stone Park Blvd
- 24 ftThe wooded area north of Country Club Blvd is flooded.
- 16 ftThe lowest portions of the bike trail under Hamilton Blvd begin to flood.
Highest crests on record
- 28.54 ft — May 19, 1990
- 25.04 ft — June 17, 2014
- 22.85 ft — March 13, 2019
- 19.44 ft — July 30, 2010
- 19.2 ft — April 23, 1985
Recent crests: 13.6 ft (July 30, 2025) · 8.84 ft (May 7, 2024) · 9.78 ft (February 27, 2023) · 8.03 ft (July 7, 2022) · 8.27 ft (August 26, 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 (SIOI4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.