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Cedar River at Cedar Rapids, IA (CIDI4)


Data Type




Inundation Levels
NAVD88 Stage

734.4* 34.0*
733.4* 33.0*
732.4* 32.0*
Record Crest: 31.12 ft
731.4 31.0
730.4 30.0
729.4 29.0
728.4 28.0
727.4 27.0
726.4 26.0
725.4 25.0
724.4 24.0
723.4 23.0
722.4 22.0
721.4 21.0
720.4 20.0
719.4 19.0
718.4 18.0
717.4 17.0
716.4 16.0

Major Flooding Begins

715.4 15.0
714.4 14.0

Moderate Flooding Begins

713.4 13.0
712.4 12.0

Minor Flooding Begins

711.4 11.0
710.4 10.0
* = Extended rating
Weather Forecast Office Quad Cities, IA North Central River Forecast Center

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Current Stage:
4.0 ft at 10/01/2014 12:00:00 UTC
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Inundation Legend Inundation Legend
USGS Gauge Location Gauge Location

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.

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Flood Categories (in feet)
Major Flood Stage:16
Moderate Flood Stage:14
Flood Stage:12
Action Stage:10

Historical Crests
(1) 31.12 ft on 06/13/2008
(2) 20.00 ft on 06/01/1851
(3) 20.00 ft on 03/18/1929
(4) 19.66 ft on 03/31/1961
(5) 19.27 ft on 04/04/1993
(6) 18.60 ft on 04/04/1933
(7) 18.51 ft on 04/10/1965
(8) 18.31 ft on 07/25/1999
(9) 18.30 ft on 05/27/2004
(10) 18.23 ft on 06/16/1947
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(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:
Levee embankments are present in the city of Cedar Rapids. All levee embankments were removed from the model to illustrate a scenario where the levees provide no protection from flooding. This mapping scenario illustrates how flooding may occur if the levees fail during a flood event. In addition, the protection of sandbags, HESCO barriers and other temporary flood protection measures were not modeled in this scenario. These inundation maps for the Cedar River at Cedar Rapids were developed by the Iowa Flood Center, and made available on this site through funding by the National Weather Service.

Extended rating:
Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
27 Water affects Mercy Hospital in Cedar Rapids.
24.2 Water reaches the bottom of the 1st Avenue bridge deck in downtown Cedar Rapids.
23.5 Water reaches the bottom of the County Road F28 bridge deck at Cedar Bluff.
22.5 Water reaches the top of a levee along 1st Street SW in Cedar Rapids.
22.2 Water reaches the bottom of the 2nd Avenue bridge deck in downtown Cedar Rapids.
20.2 Water reaches the bottom of the 3rd Avenue bridge deck and affects several homes along the river on 1st Street NW in Cedar Rapids.
19.5 Water reaches the bottom of the Blairs Ferry Road bridge deck.
19 Water reaches the bottom of a railroad bridge over the river near 1st Street NW and I Avenue NW in Cedar Rapids.
18.5 Water affects the lowest residences in Palo.
18.2 Water reaches the bottom of the railroad bridge along 8th Avenue in Cedar Rapids.
18 Water affects the lowest sections of Edgewood Road NW between Ellis Road NW and the Cedar River.
17.7 Water affects the lowest sections of the main road through a boat club on Ellis Road NW. Water affects the lowest sections of Blairs Ferry Road near the Cedar River.
16.5 Water affects the lowest sections of Ellis Road NW near the Ellis Pool and affects the entrance road to a boat club on Ellis Road NW in Cedar Rapids.
15.5 Water affects the lowest sections of Old River Road SW.
15.2 Water affects the parks along the river between 1st Avenue and 2nd Avenue and between 2nd Avenue and 3rd Avenue.
14.2 Water affects the lowest sections of C Street SW near Prairie Creek.
14 Water affects a restaurant along the river on Ellis Road NW. Water affects many residences in Cedar Bluff.
13.5 Water affects the lowest sections of Palo.
13 Water affects the lowest residences in Cedar Bluff.
12.7 Water affects the Palo water treatment plant.
11.5 Water affects Osborn Park in Cedar Rapids.
9.5 Water affects the lowest sections of Otis Road SE.
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Page last modified: 15-Jul-2014 6:27 PM
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.