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Hydrograph River at a Glance Download
Iowa River at Marengo Stage (ft)Flow (kcfs)Observed: 9.05 ft at 8:30AM May 20, 2022Observed: 9.05 ft at 8:45AM May 20, 2022Observed: 9.04 ft at 9:00AM May 20, 2022Observed: 9.05 ft at 9:15AM May 20, 2022Highest Observation: 9.07 ft at 9:30AM May 20, 2022Observed: 9.06 ft at 9:45AM May 20, 2022Observed: 9.06 ft at 10:00AM May 20, 2022Observed: 9.05 ft at 10:15AM May 20, 2022Observed: 9.05 ft at 10:30AM May 20, 2022Observed: 9.05 ft at 10:45AM May 20, 2022Observed: 9.06 ft at 11:00AM May 20, 2022Observed: 9.06 ft at 11:15AM May 20, 2022Observed: 9.05 ft at 11:30AM May 20, 2022Observed: 9.06 ft at 11:45AM May 20, 2022Observed: 9.05 ft at 12:00PM May 20, 2022Observed: 9.05 ft at 12:15PM May 20, 2022Observed: 9.05 ft at 12:30PM May 20, 2022Observed: 9.05 ft at 12:45PM May 20, 2022Observed: 9.04 ft at 1:00PM May 20, 2022Observed: 9.04 ft at 1:15PM May 20, 2022Observed: 9.06 ft at 1:30PM May 20, 2022Observed: 9.05 ft at 1:45PM May 20, 2022Observed: 9.05 ft at 2:00PM May 20, 2022Observed: 9.04 ft at 2:15PM May 20, 2022Observed: 9.04 ft at 2:30PM May 20, 2022Observed: 9.04 ft at 2:45PM May 20, 2022Observed: 9.04 ft at 3:00PM May 20, 2022Observed: 9.04 ft at 3:15PM May 20, 2022Observed: 9.05 ft at 3:30PM May 20, 2022Observed: 9.04 ft at 3:45PM May 20, 2022Observed: 9.04 ft at 4:00PM May 20, 2022Observed: 9.03 ft at 4:15PM May 20, 2022Observed: 9.03 ft at 4:30PM May 20, 2022Observed: 9.03 ft at 4:45PM May 20, 2022Observed: 9.03 ft at 5:00PM May 20, 2022Observed: 9.02 ft at 5:15PM May 20, 2022Observed: 9.02 ft at 5:30PM May 20, 2022Observed: 9.03 ft at 5:45PM May 20, 2022Observed: 9.02 ft at 6:00PM May 20, 2022Observed: 9.02 ft at 6:15PM May 20, 2022Observed: 9.02 ft at 6:30PM May 20, 2022Observed: 9.01 ft at 6:45PM May 20, 2022Observed: 9.02 ft at 7:00PM May 20, 2022Observed: 9.01 ft at 7:15PM May 20, 2022Observed: 9.01 ft at 7:30PM May 20, 2022Observed: 9 ft at 7:45PM May 20, 2022Observed: 9 ft at 8:00PM May 20, 2022Observed: 9 ft at 8:15PM May 20, 2022Observed: 9.01 ft at 8:30PM May 20, 2022Observed: 9 ft at 8:45PM May 20, 2022Observed: 9 ft at 9:00PM May 20, 2022Observed: 8.98 ft at 12:15AM May 21, 2022Observed: 8.97 ft at 12:30AM May 21, 2022Observed: 8.96 ft at 12:45AM May 21, 2022Observed: 8.96 ft at 1:00AM May 21, 2022Observed: 8.95 ft at 1:15AM May 21, 2022Observed: 8.95 ft at 1:30AM May 21, 2022Observed: 8.96 ft at 1:45AM May 21, 2022Observed: 8.95 ft at 2:00AM May 21, 2022Observed: 8.96 ft at 2:15AM May 21, 2022Observed: 8.94 ft at 2:30AM May 21, 2022Observed: 8.94 ft at 2:45AM May 21, 2022Observed: 8.95 ft at 3:00AM May 21, 2022Observed: 8.94 ft at 3:15AM May 21, 2022Observed: 8.94 ft at 3:30AM May 21, 2022Observed: 8.93 ft at 3:45AM May 21, 2022Observed: 8.93 ft at 4:00AM May 21, 2022Observed: 8.92 ft at 4:15AM May 21, 2022Observed: 8.94 ft at 4:30AM May 21, 2022Observed: 8.92 ft at 4:45AM May 21, 2022Observed: 8.92 ft at 5:00AM May 21, 2022Observed: 8.92 ft at 5:15AM May 21, 2022Observed: 8.91 ft at 5:30AM May 21, 2022Observed: 8.91 ft at 5:45AM May 21, 2022Observed: 8.92 ft at 6:00AM May 21, 2022Observed: 8.91 ft at 6:15AM May 21, 2022Observed: 8.91 ft at 6:30AM May 21, 2022Observed: 8.91 ft at 6:45AM May 21, 2022Observed: 8.9 ft at 7:00AM May 21, 2022Observed: 8.89 ft at 7:15AM May 21, 2022Observed: 8.9 ft at 7:30AM May 21, 2022Observed: 8.9 ft at 7:45AM May 21, 2022Observed: 8.9 ft at 8:00AM May 21, 2022Observed: 8.89 ft at 8:15AM May 21, 2022Observed: 8.89 ft at 8:30AM May 21, 2022Observed: 8.88 ft at 8:45AM May 21, 2022Observed: 8.88 ft at 9:00AM May 21, 2022Observed: 8.88 ft at 9:15AM May 21, 2022Observed: 8.88 ft at 9:30AM May 21, 2022Observed: 8.88 ft at 9:45AM May 21, 2022Observed: 8.86 ft at 10:00AM May 21, 2022Observed: 8.86 ft at 10:15AM May 21, 2022Observed: 8.86 ft at 10:30AM May 21, 2022Observed: 8.85 ft at 10:45AM May 21, 2022Observed: 8.85 ft at 11:00AM May 21, 2022Observed: 8.85 ft at 11:15AM May 21, 2022Observed: 8.86 ft at 11:30AM May 21, 2022Observed: 8.84 ft at 11:45AM May 21, 2022Observed: 8.84 ft at 12:00PM May 21, 2022Observed: 8.84 ft at 12:15PM May 21, 2022Observed: 8.84 ft at 12:30PM May 21, 2022Observed: 8.83 ft at 12:45PM May 21, 2022Observed: 8.82 ft at 1:00PM May 21, 2022Observed: 8.82 ft at 1:15PM May 21, 2022Observed: 8.83 ft at 1:30PM May 21, 2022Observed: 8.83 ft at 1:45PM May 21, 2022Observed: 8.82 ft at 2:00PM May 21, 2022Observed: 8.82 ft at 2:15PM May 21, 2022Observed: 8.82 ft at 2:30PM May 21, 2022Observed: 8.81 ft at 2:45PM May 21, 2022Observed: 8.8 ft at 3:00PM May 21, 2022Observed: 8.8 ft at 3:15PM May 21, 2022Observed: 8.8 ft at 3:30PM May 21, 2022Observed: 8.82 ft at 3:45PM May 21, 2022Observed: 8.8 ft at 4:00PM May 21, 2022Observed: 8.8 ft at 4:15PM May 21, 2022Observed: 8.8 ft at 4:30PM May 21, 2022Observed: 8.8 ft at 4:45PM May 21, 2022Observed: 8.78 ft at 5:00PM May 21, 2022Observed: 8.78 ft at 5:15PM May 21, 2022Observed: 8.79 ft at 5:30PM May 21, 2022Observed: 8.78 ft at 5:45PM May 21, 2022Observed: 8.78 ft at 6:00PM May 21, 2022Observed: 8.78 ft at 6:15PM May 21, 2022Observed: 8.78 ft at 6:30PM May 21, 2022Observed: 8.76 ft at 6:45PM May 21, 2022Observed: 8.76 ft at 7:00PM May 21, 2022Observed: 8.78 ft at 7:15PM May 21, 2022Observed: 8.78 ft at 7:30PM May 21, 2022Observed: 8.76 ft at 7:45PM May 21, 2022Observed: 8.76 ft at 8:00PM May 21, 2022Observed: 8.75 ft at 8:15PM May 21, 2022Observed: 8.75 ft at 8:30PM May 21, 2022Observed: 8.77 ft at 8:45PM May 21, 2022Observed: 8.76 ft at 9:00PM May 21, 2022Observed: 8.76 ft at 9:15PM May 21, 2022Observed: 8.75 ft at 9:30PM May 21, 2022Observed: 8.74 ft at 9:45PM May 21, 2022Observed: 8.74 ft at 10:00PM May 21, 2022Observed: 8.75 ft at 10:15PM May 21, 2022Observed: 8.75 ft at 10:30PM May 21, 2022Observed: 8.74 ft at 10:45PM May 21, 2022Observed: 8.73 ft at 11:00PM May 21, 2022Observed: 8.73 ft at 11:15PM May 21, 2022Observed: 8.73 ft at 11:30PM May 21, 2022Observed: 8.74 ft at 11:45PM May 21, 2022Observed: 8.73 ft at 12:00AM May 22, 2022Observed: 8.73 ft at 12:15AM May 22, 2022Observed: 8.72 ft at 12:30AM May 22, 2022Observed: 8.71 ft at 12:45AM May 22, 2022Observed: 8.7 ft at 1:00AM May 22, 2022Observed: 8.72 ft at 1:15AM May 22, 2022Observed: 8.72 ft at 1:30AM May 22, 2022Observed: 8.71 ft at 1:45AM May 22, 2022Observed: 8.71 ft at 2:00AM May 22, 2022Observed: 8.71 ft at 2:15AM May 22, 2022Observed: 8.7 ft at 2:30AM May 22, 2022Observed: 8.7 ft at 2:45AM May 22, 2022Observed: 8.71 ft at 3:00AM May 22, 2022Observed: 8.7 ft at 3:15AM May 22, 2022Observed: 8.69 ft at 3:30AM May 22, 2022Observed: 8.69 ft at 3:45AM May 22, 2022Observed: 8.69 ft at 4:00AM May 22, 2022Observed: 8.68 ft at 4:15AM May 22, 2022Observed: 8.68 ft at 4:30AM May 22, 2022Observed: 8.69 ft at 4:45AM May 22, 2022Observed: 8.69 ft at 5:00AM May 22, 2022Observed: 8.68 ft at 5:15AM May 22, 2022Observed: 8.68 ft at 5:30AM May 22, 2022Observed: 8.68 ft at 5:45AM May 22, 2022Observed: 8.67 ft at 6:00AM May 22, 2022Observed: 8.67 ft at 6:15AM May 22, 2022Observed: 8.68 ft at 6:30AM May 22, 2022Observed: 8.67 ft at 6:45AM May 22, 2022Observed: 8.68 ft at 7:00AM May 22, 2022Observed: 8.68 ft at 7:15AM May 22, 2022Observed: 8.67 ft at 7:30AM May 22, 2022Observed: 8.67 ft at 7:45AM May 22, 2022Observed: 8.66 ft at 8:00AM May 22, 2022Observed: 8.66 ft at 8:15AM May 22, 2022Observed: 8.65 ft at 8:30AM May 22, 2022Observed: 8.64 ft at 8:45AM May 22, 2022Observed: 8.66 ft at 9:00AM May 22, 2022Observed: 8.66 ft at 9:15AM May 22, 2022Observed: 8.65 ft at 9:30AM May 22, 2022Observed: 8.65 ft at 9:45AM May 22, 2022Observed: 8.65 ft at 10:00AM May 22, 2022Observed: 8.64 ft at 10:15AM May 22, 2022Observed: 8.64 ft at 10:30AM May 22, 2022Observed: 8.63 ft at 10:45AM May 22, 2022Observed: 8.62 ft at 11:00AM May 22, 2022Observed: 8.63 ft at 11:15AM May 22, 2022Observed: 8.63 ft at 11:30AM May 22, 2022Observed: 8.63 ft at 11:45AM May 22, 2022Observed: 8.62 ft at 12:00PM May 22, 2022Observed: 8.61 ft at 12:15PM May 22, 2022Observed: 8.62 ft at 12:30PM May 22, 2022Observed: 8.6 ft at 12:45PM May 22, 2022Observed: 8.62 ft at 1:00PM May 22, 2022Observed: 8.62 ft at 1:15PM May 22, 2022Observed: 8.62 ft at 1:30PM May 22, 2022Observed: 8.6 ft at 1:45PM May 22, 2022Observed: 8.6 ft at 2:00PM May 22, 2022Observed: 8.59 ft at 2:15PM May 22, 2022Observed: 8.6 ft at 2:30PM May 22, 2022Observed: 8.59 ft at 2:45PM May 22, 2022Observed: 8.59 ft at 3:00PM May 22, 2022Observed: 8.58 ft at 3:15PM May 22, 2022Observed: 8.6 ft at 3:30PM May 22, 2022Observed: 8.6 ft at 3:45PM May 22, 2022Observed: 8.59 ft at 4:00PM May 22, 2022Observed: 8.58 ft at 4:15PM May 22, 2022Observed: 8.58 ft at 4:30PM May 22, 2022Observed: 8.58 ft at 4:45PM May 22, 2022Observed: 8.57 ft at 5:00PM May 22, 2022Observed: 8.57 ft at 5:15PM May 22, 2022Observed: 8.56 ft at 5:30PM May 22, 2022Observed: 8.58 ft at 5:45PM May 22, 2022Observed: 8.57 ft at 6:00PM May 22, 2022Observed: 8.57 ft at 6:15PM May 22, 2022Observed: 8.57 ft at 6:30PM May 22, 2022Observed: 8.56 ft at 6:45PM May 22, 2022Observed: 8.55 ft at 7:00PM May 22, 2022Observed: 8.56 ft at 7:15PM May 22, 2022Observed: 8.57 ft at 7:30PM May 22, 2022Observed: 8.55 ft at 7:45PM May 22, 2022Observed: 8.56 ft at 8:00PM May 22, 2022Observed: 8.55 ft at 8:15PM May 22, 2022Observed: 8.54 ft at 8:30PM May 22, 2022Observed: 8.54 ft at 8:45PM May 22, 2022Observed: 8.55 ft at 9:00PM May 22, 2022Observed: 8.55 ft at 9:15PM May 22, 2022Observed: 8.54 ft at 9:30PM May 22, 2022Observed: 8.53 ft at 9:45PM May 22, 2022Observed: 8.53 ft at 10:00PM May 22, 2022Observed: 8.54 ft at 10:15PM May 22, 2022Observed: 8.54 ft at 10:30PM May 22, 2022Observed: 8.53 ft at 10:45PM May 22, 2022Observed: 8.53 ft at 11:00PM May 22, 2022Observed: 8.52 ft at 11:15PM May 22, 2022Observed: 8.51 ft at 11:30PM May 22, 2022Observed: 8.51 ft at 11:45PM May 22, 2022Observed: 8.52 ft at 12:00AM May 23, 2022Observed: 8.52 ft at 12:15AM May 23, 2022Observed: 8.51 ft at 12:30AM May 23, 2022Observed: 8.51 ft at 12:45AM May 23, 2022Observed: 8.51 ft at 1:00AM May 23, 2022Observed: 8.5 ft at 1:15AM May 23, 2022Observed: 8.5 ft at 1:30AM May 23, 2022Observed: 8.49 ft at 1:45AM May 23, 2022Observed: 8.5 ft at 2:00AM May 23, 2022Observed: 8.5 ft at 2:15AM May 23, 2022Observed: 8.5 ft at 2:30AM May 23, 2022Observed: 8.49 ft at 2:45AM May 23, 2022Observed: 8.49 ft at 3:00AM May 23, 2022Observed: 8.48 ft at 3:15AM May 23, 2022Observed: 8.48 ft at 3:30AM May 23, 2022Observed: 8.49 ft at 3:45AM May 23, 2022Observed: 8.49 ft at 4:00AM May 23, 2022Observed: 8.48 ft at 4:15AM May 23, 2022Observed: 8.47 ft at 4:30AM May 23, 2022Observed: 8.47 ft at 4:45AM May 23, 2022Observed: 8.47 ft at 5:00AM May 23, 2022Observed: 8.46 ft at 5:15AM May 23, 2022Observed: 8.47 ft at 5:30AM May 23, 2022Observed: 8.46 ft at 5:45AM May 23, 2022Observed: 8.46 ft at 6:00AM May 23, 2022Observed: 8.45 ft at 6:15AM May 23, 2022Observed: 8.45 ft at 6:30AM May 23, 2022Observed: 8.45 ft at 6:45AM May 23, 2022Observed: 8.45 ft at 7:00AM May 23, 2022Observed: 8.44 ft at 7:15AM May 23, 2022Observed: 8.44 ft at 7:30AM May 23, 2022Observed: 8.44 ft at 7:45AM May 23, 2022Observed: 8.45 ft at 8:00AM May 23, 2022U.S. Geological SurveyMROI4(plotting HGIRG) Graph Created (8:18AM May 23, 2022)ObservedLatest observed value: 8.45 ft at 8:00 AM CDT 23-May-2022. Flood Stage is 15 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

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

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Upstream Gauge - at Belle Plaine Upstream Gauge Downstream Gauge Downstream Gauge - above Coralville Dam
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 17
Flood Stage: 15
Action Stage: 13
Low Stage (in feet): -9999

Historic Crests
(1) 21.38 ft on 06/12/2008
(2) 20.36 ft on 05/31/2013
(3) 20.31 ft on 07/19/1993
(4) 20.26 ft on 07/12/1993
(5) 19.96 ft on 07/02/2014
(6) 19.79 ft on 07/12/1969
(7) 19.57 ft on 08/19/1993
(8) 19.40 ft on 03/19/1979
(9) 19.21 ft on 03/31/1960
(10) 19.14 ft on 09/06/2018
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.93 ft on 06/25/2020
(2) 17.59 ft on 06/11/2020
(3) 18.44 ft on 05/29/2019
(4) 18.83 ft on 03/17/2019
(5) 18.76 ft on 10/10/2018
(6) 19.14 ft on 09/06/2018
(7) 17.95 ft on 01/20/2017
(8) 16.90 ft on 10/04/2016
(9) 18.31 ft on 12/18/2015
(10) 17.09 ft on 06/25/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 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 Collapse
If you notice any errors in the below information, please contact our Webmaster
24.5 Water reaches the top of the levee at the invert at Highway V66.
23.7 Water reaches the top of the levee invert on the west side of Marengo.
22 Water approaches the top of the levee on the south bank at Marengo.
20.9 Water reaches the bottom of the Highway V66 bridge.
19.5 Water affects the Whirlpool Corporation parking lot and southeast exterior of the plant in Middle Amana.
19 Major Flood Stage. Homes west of Marengo are affected by floodwaters. Significant flooding of agricultural land.
18 Water breaches the mill race dikes near Middle Amana.
17 Moderate Flood Stage. Extensive inundation of agricultural land.
16 Flood Stage. Water affects agricultural land along the river. Water is several feet deep in places.
15 Water reaches the bottom of the levee surrounding Marengo. Water affects low lying agricultural land along the river
14 Low lying agricultural land and pastureland along the river upstream of Marengo is affected.
11 Water affects the lowest agricultural land along the river.
About This Location Collapse

Latitude: 41.812726° N, Longitude: 92.064792° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 15 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 720.45 ft 734.45 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 720.52 ft 734.52 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
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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
Quad Cities Weather Forecast Office
9040 N Harrison Street
Davenport, IA 52806-7326
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