Boone River near Webster City

1. 18.00 ftFlooding occurs west of the river to Union St and east to Elm St.
2. 16.00 ftFlooding occurs along both river banks in the east part of town.
3. 14.00 ftWater affects some residential areas near the river in Webster City.
4. 12.00 ftWidespread agricultural land flooding occurs.
5. 11.00 ftWater affects low-lying areas in close proximity to the river.
6. 10.50 ftWater crosses the city walking path just south of the 2nd St bridge and also over the walkway just north of the Bank St bridge.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• July 21, 2025: 9.06 ft
• May 24, 2024: 10.20 ft
• February 27, 2023: 8.44 ft
• June 17, 2022: 6.04 ft
• May 23, 2021: 4.37 ft
• October 10, 2019: 8.91 ft
• March 18, 2019: 11.36 ft
• March 15, 2019: 11.49 ft
• September 23, 2018: 14.40 ft
• May 21, 2017: 7.05 ft

• UpstreamBoone River at Goldfield
• DownstreamDes Moines River at Stratford
• Mud Lake Drainage Ditch 71 at Jewell
• South Fork Iowa River at Blairsburg
• Ioway Creek at IFC--Story City 120th St
• South Fork Iowa River
• Ioway Creek at Ames Hwy E18
• South Skunk River at IFC--Randall Hwy R61
• Montgomery Creek

Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available.

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.