Iowa River at Marshalltown
Iowa — Water Level & Flood Stage
Located in Marshall County, Iowa on the Iowa River. Live water level data from USGS gauge 05451500, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
26 ft
Moderate Flood
23 ft
Minor Flood
19 ft
Action Stage
14 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
26 ft
Water reaches the top of the earthen levee along the river at Iowa 14.
22 ft
Water reaches the low beams of the Iowa 14 bridge.
21.5 ft
Water affects several roads east of Marshalltown...including US 30...E Main St Rd and Zeller Ave.
21.4 ft
Water affects both lanes of Iowa 14 north of Marshalltown.
21.2 ft
Water affects several gravel roads north and northwest of Marshalltown...including Stanley Mill Rd...N Center St...Oaks Ave and Prairie Ave.
21 ft
Iowa 330 south of Albion near Timmons Grove Park is closed. Water affects most of Timmons Grove County Park.
20.5 ft
In 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 ft
Water approaches the top of the concrete bridge piers of the Iowa 14 bridge.
19.5 ft
Water affects the southbound lanes of Iowa 14 as well as Iowa 330 south of Albion.
19 ft
Water affects Iowa 14 north of the river as well as Iowa 330 south of Albion.
18 ft
Widespread agricultural and lowland flooding occur along Iowa 330 south of Albion.
17 ft
Water threatens roads within Timmons Grove County Park as well as the bicycle path along 18th Ave in Marshalltown.
16.5 ft
Water affects the underside of the primary concrete support span of Iowa 14.
16 ft
Water affects the access road serving north portions of Timmons Grove County Park.
15 ft
Water approaches the bridge crossing from the County Three Bridges Rd east of Marshalltown. Water affects agricultural land.
14 ft
Lowland flooding occurs north of town near Iowa 14.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jul 1, 2014 | 22.25 ft | 24,500 cfs |
| Jul 1, 2014 | 22.25 ft | 24,500 cfs |
| May 29, 2013 | 22.08 ft | 25,500 cfs |
| May 29, 2013 | 22.08 ft | 25,500 cfs |
| Jun 12, 2008 | 21.79 ft | 22,400 cfs |
About This Gauge
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StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Iowa River at Marshalltown?
The Iowa River at Marshalltown gauge is maintained by USGS (site 05451500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Iowa River at Marshalltown?
The NWS-defined flood stage for Iowa River at Marshalltown is 19 feet. Action stage begins at 14 feet. Moderate flooding starts at 23 feet, and major flooding at 26 feet.
How do I get alerts when Iowa River rises?
Download StormCast free on Google Play, go to River Gauges, and add Iowa River at Marshalltown to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Iowa River at Marshalltown gauge located?
The gauge is located in Marshall County, Iowa at coordinates 42.0658°N, 92.9077°W. USGS site number: 05451500. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey