Little Sioux River at Correctionville

1. 32.00 ftA more substantial risk to flooding of homes and businesses begins along the eastern edges of Anthon.
2. 30.00 ftSeveral structures on the northwest side of Correctionville are flooded.
3. 29.00 ftHwy 31 north of Anthon is flooded and the intersection of 220th and Mason Ave east of Anthon may also be flooded. Much of Stahls Park in Anthon is flooded.
4. 28.00 ftThe lowest portions of Hwy 20 just west of Correctionville flood and may result in a closure.
5. 26.00 ftThe bridge on County Road L36 northwest of Correctionville is overtopped.
6. 23.50 ftThe water reaches the bottom of the bridge on County Road L36 northwest of Correctionville, the southern portions of Correctionville will be significantly affected by flooding, and many sewers, homes, and roads will be flooded.
7. 23.00 ftIowa Highway 31 both north and south of Correctionville is flooded. More substantial overtopping of levees also begins. If Bacon Creek between Correctionville and Cushing is also running high, water will begin backing up Bacon Creek and flood the southern portions of Correctionville along and north of County Road D22. Water reaches to the top of the boat ramp at Stahls Park in Anthon and begins to flood the parking lot.
8. 21.00 ftWater approaches Aspen St on the west side of Correctionville. Much of Copeland Park is underwater.
9. 19.00 ftMore significant amounts of agricultural land are flooded. Copeland Park west of Correctionville floods.
10. 17.00 ftThe lowest portions of Copeland Park in Correctionville may begin to flood.
11. 16.00 ftMinor flooding of some of the low lying agricultural lands.
12. 14.00 ftThe boat ramp parking lot at Little Sioux Park between Correctionville and Anthon floods.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 23, 2026.

Most recent crests

• August 1, 2025: 14.59 ft
• June 24, 2024: 30.92 ft
• February 28, 2023: 12.91 ft
• May 28, 2020: 13.64 ft
• March 15, 2019: 26.45 ft
• September 24, 2018: 24.30 ft
• May 27, 2017: 13.66 ft
• May 4, 2016: 17.78 ft
• August 17, 2015: 15.43 ft
• June 20, 2014: 24.39 ft

• UpstreamLittle Sioux River at Cherokee
• DownstreamLittle Sioux River at Turin
• West Fork Ditch at Moville
• Maple River at Ida Grove
• Maple River at Galva
• Elliott Creek at Lawton
• Maple River at Mapleton
• West Fork Ditch at Hornick
• Mill Creek (NW IA) at Larrabee

Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. Gauge reading may be affected by ice.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.