Big Sioux River at Sioux City
Woodbury County, Iowa
The past week
Loading chart…
What floods at each level
- 48 ft
The levees on the South Dakota side are overtopped.
- 45.5 ft
More significant levee overtopping occurs in the Iowa Riverside Community with numerous homes and buildings flooded.
- 43 ft
The lower levees in the Iowa Riverside community are in danger of being overtopped if not sandbagged. This may result in flooding of several homes on either side of Dacotan Ave.
- 38 ft
Most of the storm drains are submerged.
- 37 ft
Several structures south of River Dr on the SD will flood if a levee failure occurs.
- 35 ft
Some lower portions south of River Dr on the SD may be at risk of flooding with a levee failure.
- 32 ft
Agricultural land north of the leveed area begins to flood.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jun 22, 2024 | 44.9 ft | 97,200 cfs |
| Jun 19, 2014 | 37.7 ft | 64,300 cfs |
| Mar 16, 2019 | 37.46 ft | 61,600 cfs |
More on Big Sioux River
Get an alert when Big Sioux River rises
Save this gauge in the free StormCast app and pick the level that matters to you. Your phone goes off when the water gets there.
