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This probabilistic forecast is issued by the North Central River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

About this graph

Forecasts for the Iowa River at Marshalltown are issued as needed during times of high water, but are not routinely available.

More information on datums is available at www.ngs.noaa.gov/faq.shtml

Return to Area Map

Downstream Gauge

Zoom Level:13

Flood Categories (in feet)

Major Flood Stage:	26
Moderate Flood Stage:	23
Flood Stage:	19
Action Stage:	14
Low Stage (in feet):	-9999

Historic Crests
(1) 22.25 ft on 07/02/2014
(2) 22.08 ft on 05/30/2013
(3) 21.79 ft on 06/13/2008
(4) 20.77 ft on 08/17/1993
(5) 20.38 ft on 12/15/2015
(6) 20.38 ft on 06/18/1990
(7) 20.32 ft on 03/15/2019
(8) 20.13 ft on 06/24/2007
(9) 19.99 ft on 08/30/2015
(10) 19.97 ft on 06/05/1991
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.71 ft on 02/28/2023
(2) 16.64 ft on 06/16/2022
(3) 13.22 ft on 03/07/2021
(4) 18.21 ft on 06/23/2020
(5) 20.32 ft on 03/15/2019
(6) 18.25 ft on 09/27/2018
(7) 17.63 ft on 10/01/2016
(8) 20.38 ft on 12/15/2015
(9) 19.99 ft on 08/30/2015
(10) 22.25 ft on 07/02/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
26	Water reaches the top of the earthen levee along the river at Iowa 14.
22	Water reaches the low beams of the Iowa 14 bridge.
21.5	Water affects several roads east of Marshalltown...including US 30...E Main St Rd and Zeller Ave.
21.4	Water affects both lanes of Iowa 14 north of Marshalltown.
21.2	Water affects several gravel roads north and northwest of Marshalltown...including Stanley Mill Rd...N Center St...Oaks Ave and Prairie Ave.
21	Iowa 330 south of Albion near Timmons Grove Park is closed. Water affects most of Timmons Grove County Park.
20.5	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	Water approaches the top of the concrete bridge piers of the Iowa 14 bridge.
19.5	Water affects the southbound lanes of Iowa 14 as well as Iowa 330 south of Albion.
19	Water affects Iowa 14 north of the river as well as Iowa 330 south of Albion.
18	Widespread agricultural and lowland flooding occur along Iowa 330 south of Albion.
17	Water threatens roads within Timmons Grove County Park as well as the bicycle path along 18th Ave in Marshalltown.
16.5	Water affects the underside of the primary concrete support span of Iowa 14.
16	Water affects the access road serving north portions of Timmons Grove County Park.
15	Water approaches the bridge crossing from the County Three Bridges Rd east of Marshalltown. Water affects agricultural land.
14	Lowland flooding occurs north of town near Iowa 14.

Other Real-time and/or Archive Data Sources:

Additional Information

How low could the river get?

USGS 7-Day Streamflow Duration Hydrograph for this location:

USGS Cumulative Streamflow Hydrograph for this location:

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Des Moines Weather Forecast Office
9607 NW Beaver Dr.
Des Moines, IA 50131
(515) 270-2614
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Page last modified: 2-Nov-2020 7:29 PM

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