Rivers in Iowa
Iowa River at Marshalltown
Below flood stage
13.34ftStage
Observed Thu, Sep 24, 3:00 AM CDT
- Flood stage
- 19.00 ft
- Record crest
- 22.25 ft2014
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 26.00 ft |
| Moderate flood | 23.00 ft |
| Minor flood | 19.00 ft |
| Action | 14.00 ft |
- 26.00 ftWater reaches the top of the earthen levee along the river at Iowa 14.
- 22.00 ftWater reaches the low beams of the Iowa 14 bridge.
- 21.50 ftWater affects several roads east of Marshalltown...including US 30...E Main St Rd and Zeller Ave.
- 21.40 ftWater affects both lanes of Iowa 14 north of Marshalltown.
- 21.20 ftWater affects several gravel roads north and northwest of Marshalltown...including Stanley Mill Rd...N Center St...Oaks Ave and Prairie Ave.
- 21.00 ftIowa 330 south of Albion near Timmons Grove Park is closed. Water affects most of Timmons Grove County Park.
- 20.50 ftIn Albion...water affects parts of Marsh Ave...Stanley Mill Rd and 160th St. Water threatens Iowa 330 near the Linn Creek overpass which is located west of Marshalltown...or about two miles northeast of the US 30 junction.
- 20.00 ftWater approaches the top of the concrete bridge piers of the Iowa 14 bridge.
- 19.50 ftWater affects the southbound lanes of Iowa 14 as well as Iowa 330 south of Albion.
- 19.00 ftWater affects Iowa 14 north of the river as well as Iowa 330 south of Albion.
- 18.00 ftWidespread agricultural and lowland flooding occur along Iowa 330 south of Albion.
- 17.00 ftWater threatens roads within Timmons Grove County Park as well as the bicycle path along 18th Ave in Marshalltown.
- 16.50 ftWater affects the underside of the primary concrete support span of Iowa 14.
- 16.00 ftWater affects the access road serving north portions of Timmons Grove County Park.
- 15.00 ftWater approaches the bridge crossing from the County Three Bridges Rd east of Marshalltown. Water affects agricultural land.
- 14.00 ftLowland flooding occurs north of town near Iowa 14.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
110 crests on NOAA’s list since 1903.
| # | Date | Stage |
|---|---|---|
| 1 | July 2, 2014 | 22.25 ft |
| 2 | May 30, 2013 | 22.08 ft |
| 3 | June 13, 2008 | 21.79 ft |
| 4 | August 17, 1993 | 20.77 ft |
| 5 | June 18, 1990 | 20.38 ft |
| 6 | December 15, 2015 | 20.38 ft |
| 7 | March 15, 2019 | 20.32 ft |
| 8 | June 24, 2007 | 20.13 ft |
| 9 | May 23, 2024 | 20.00 ft |
| 10 | August 30, 2015 | 19.99 ft |
| 11 | June 5, 1991 | 19.97 ft |
| 12 | March 19, 1979 | 19.77 ft |
| 13 | June 22, 1998 | 19.66 ft |
| 14 | June 23, 1974 | 19.38 ft |
| 15 | July 9, 1969 | 19.37 ft |
| 16 | June 28, 2010 | 19.00 ft |
| 17 | July 31, 2025 | 18.67 ft |
| 18 | July 4, 1983 | 18.65 ft |
| 19 | March 21, 1975 | 18.42 ft |
| 20 | April 28, 2009 | 18.30 ft |
| 21 | June 14, 1984 | 18.29 ft |
| 22 | September 27, 2018 | 18.25 ft |
| 23 | June 11, 1999 | 18.22 ft |
| 24 | June 23, 2020 | 18.21 ft |
| 25 | May 26, 2004 | 18.18 ft |
Most recent crests
- July 31, 2025: 18.67 ft
- May 23, 2024: 20.00 ft
- February 28, 2023: 17.71 ft
- June 16, 2022: 16.64 ft
- March 7, 2021: 13.22 ft
- June 23, 2020: 18.21 ft
- March 15, 2019: 20.32 ft
- September 27, 2018: 18.25 ft
- October 1, 2016: 17.63 ft
- December 15, 2015: 20.38 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available.
Sources
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.