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Hydrograph River at a Glance Download
Iowa River at Marengo Stage (ft)Flow (kcfs)Highest Observation: 9.53 ft at 7:15AM Jul 11, 2020Highest Observation: 9.53 ft at 7:30AM Jul 11, 2020Observed: 9.52 ft at 7:45AM Jul 11, 2020Observed: 9.52 ft at 8:00AM Jul 11, 2020Observed: 9.51 ft at 8:15AM Jul 11, 2020Observed: 9.5 ft at 8:30AM Jul 11, 2020Observed: 9.51 ft at 8:45AM Jul 11, 2020Observed: 9.48 ft at 9:00AM Jul 11, 2020Observed: 9.49 ft at 9:15AM Jul 11, 2020Observed: 9.49 ft at 9:30AM Jul 11, 2020Observed: 9.48 ft at 9:45AM Jul 11, 2020Observed: 9.48 ft at 10:00AM Jul 11, 2020Observed: 9.47 ft at 10:15AM Jul 11, 2020Observed: 9.47 ft at 10:30AM Jul 11, 2020Observed: 9.45 ft at 10:45AM Jul 11, 2020Observed: 9.46 ft at 11:00AM Jul 11, 2020Observed: 9.46 ft at 11:15AM Jul 11, 2020Observed: 9.43 ft at 11:30AM Jul 11, 2020Observed: 9.42 ft at 11:45AM Jul 11, 2020Observed: 9.43 ft at 12:00PM Jul 11, 2020Observed: 9.44 ft at 12:15PM Jul 11, 2020Observed: 9.42 ft at 12:30PM Jul 11, 2020Observed: 9.44 ft at 12:45PM Jul 11, 2020Observed: 9.43 ft at 1:00PM Jul 11, 2020Observed: 9.44 ft at 1:15PM Jul 11, 2020Observed: 9.41 ft at 1:30PM Jul 11, 2020Observed: 9.43 ft at 1:45PM Jul 11, 2020Observed: 9.43 ft at 2:00PM Jul 11, 2020Observed: 9.4 ft at 2:15PM Jul 11, 2020Observed: 9.4 ft at 2:30PM Jul 11, 2020Observed: 9.42 ft at 2:45PM Jul 11, 2020Observed: 9.38 ft at 3:00PM Jul 11, 2020Observed: 9.41 ft at 3:15PM Jul 11, 2020Observed: 9.4 ft at 3:30PM Jul 11, 2020Observed: 9.4 ft at 3:45PM Jul 11, 2020Observed: 9.38 ft at 4:00PM Jul 11, 2020Observed: 9.39 ft at 4:15PM Jul 11, 2020Observed: 9.39 ft at 4:30PM Jul 11, 2020Observed: 9.39 ft at 4:45PM Jul 11, 2020Observed: 9.38 ft at 5:00PM Jul 11, 2020Observed: 9.36 ft at 5:15PM Jul 11, 2020Observed: 9.38 ft at 5:30PM Jul 11, 2020Observed: 9.37 ft at 5:45PM Jul 11, 2020Observed: 9.36 ft at 6:00PM Jul 11, 2020Observed: 9.36 ft at 6:15PM Jul 11, 2020Observed: 9.36 ft at 6:30PM Jul 11, 2020Observed: 9.36 ft at 6:45PM Jul 11, 2020Observed: 9.35 ft at 7:00PM Jul 11, 2020Observed: 9.35 ft at 7:15PM Jul 11, 2020Observed: 9.35 ft at 7:30PM Jul 11, 2020Observed: 9.34 ft at 7:45PM Jul 11, 2020Observed: 9.34 ft at 8:00PM Jul 11, 2020Observed: 9.31 ft at 8:15PM Jul 11, 2020Observed: 9.31 ft at 8:30PM Jul 11, 2020Observed: 9.32 ft at 8:45PM Jul 11, 2020Observed: 9.32 ft at 9:00PM Jul 11, 2020Observed: 9.31 ft at 9:15PM Jul 11, 2020Observed: 9.31 ft at 9:30PM Jul 11, 2020Observed: 9.3 ft at 9:45PM Jul 11, 2020Observed: 9.3 ft at 10:00PM Jul 11, 2020Observed: 9.3 ft at 10:15PM Jul 11, 2020Observed: 9.29 ft at 10:30PM Jul 11, 2020Observed: 9.29 ft at 10:45PM Jul 11, 2020Observed: 9.29 ft at 11:00PM Jul 11, 2020Observed: 9.29 ft at 11:15PM Jul 11, 2020Observed: 9.29 ft at 11:30PM Jul 11, 2020Observed: 9.28 ft at 11:45PM Jul 11, 2020Observed: 9.29 ft at 12:00AM Jul 12, 2020Observed: 9.28 ft at 12:15AM Jul 12, 2020Observed: 9.28 ft at 12:30AM Jul 12, 2020Observed: 9.28 ft at 12:45AM Jul 12, 2020Observed: 9.28 ft at 1:00AM Jul 12, 2020Observed: 9.28 ft at 1:15AM Jul 12, 2020Observed: 9.27 ft at 1:30AM Jul 12, 2020Observed: 9.27 ft at 1:45AM Jul 12, 2020Observed: 9.27 ft at 2:00AM Jul 12, 2020Observed: 9.27 ft at 2:15AM Jul 12, 2020Observed: 9.27 ft at 2:30AM Jul 12, 2020Observed: 9.27 ft at 2:45AM Jul 12, 2020Observed: 9.27 ft at 3:00AM Jul 12, 2020Observed: 9.27 ft at 3:15AM Jul 12, 2020Observed: 9.27 ft at 3:30AM Jul 12, 2020Observed: 9.26 ft at 3:45AM Jul 12, 2020Observed: 9.26 ft at 4:00AM Jul 12, 2020Observed: 9.26 ft at 4:15AM Jul 12, 2020Observed: 9.25 ft at 4:30AM Jul 12, 2020Observed: 9.25 ft at 4:45AM Jul 12, 2020Observed: 9.26 ft at 5:00AM Jul 12, 2020Observed: 9.25 ft at 5:15AM Jul 12, 2020Observed: 9.25 ft at 5:30AM Jul 12, 2020Observed: 9.25 ft at 5:45AM Jul 12, 2020Observed: 9.25 ft at 6:00AM Jul 12, 2020Observed: 9.25 ft at 6:15AM Jul 12, 2020Observed: 9.25 ft at 6:30AM Jul 12, 2020Observed: 9.25 ft at 6:45AM Jul 12, 2020Observed: 9.24 ft at 7:00AM Jul 12, 2020Observed: 9.25 ft at 7:15AM Jul 12, 2020Observed: 9.24 ft at 7:30AM Jul 12, 2020Observed: 9.24 ft at 7:45AM Jul 12, 2020Observed: 9.24 ft at 8:00AM Jul 12, 2020Observed: 9.24 ft at 8:15AM Jul 12, 2020Observed: 9.24 ft at 8:30AM Jul 12, 2020Observed: 9.24 ft at 8:45AM Jul 12, 2020Observed: 9.23 ft at 9:00AM Jul 12, 2020Observed: 9.24 ft at 9:15AM Jul 12, 2020Observed: 9.23 ft at 9:30AM Jul 12, 2020Observed: 9.23 ft at 9:45AM Jul 12, 2020Observed: 9.23 ft at 10:00AM Jul 12, 2020Observed: 9.23 ft at 10:15AM Jul 12, 2020Observed: 9.23 ft at 10:30AM Jul 12, 2020Observed: 9.23 ft at 10:45AM Jul 12, 2020Observed: 9.23 ft at 11:00AM Jul 12, 2020Observed: 9.22 ft at 11:15AM Jul 12, 2020Observed: 9.22 ft at 11:30AM Jul 12, 2020Observed: 9.22 ft at 11:45AM Jul 12, 2020Observed: 9.22 ft at 12:00PM Jul 12, 2020Observed: 9.21 ft at 12:15PM Jul 12, 2020Observed: 9.21 ft at 12:30PM Jul 12, 2020Observed: 9.21 ft at 12:45PM Jul 12, 2020Observed: 9.18 ft at 1:00PM Jul 12, 2020Observed: 9.18 ft at 1:15PM Jul 12, 2020Observed: 9.2 ft at 1:30PM Jul 12, 2020Observed: 9.2 ft at 1:45PM Jul 12, 2020Observed: 9.2 ft at 2:00PM Jul 12, 2020Observed: 9.19 ft at 2:15PM Jul 12, 2020Observed: 9.19 ft at 2:30PM Jul 12, 2020Observed: 9.18 ft at 2:45PM Jul 12, 2020Observed: 9.18 ft at 3:00PM Jul 12, 2020Observed: 9.18 ft at 3:15PM Jul 12, 2020Observed: 9.18 ft at 3:30PM Jul 12, 2020Observed: 9.17 ft at 3:45PM Jul 12, 2020Observed: 9.17 ft at 4:00PM Jul 12, 2020Observed: 9.17 ft at 4:15PM Jul 12, 2020Observed: 9.17 ft at 4:30PM Jul 12, 2020Observed: 9.16 ft at 4:45PM Jul 12, 2020Observed: 9.16 ft at 5:00PM Jul 12, 2020Observed: 9.15 ft at 5:15PM Jul 12, 2020Observed: 9.12 ft at 5:30PM Jul 12, 2020Observed: 9.14 ft at 5:45PM Jul 12, 2020Observed: 9.14 ft at 6:00PM Jul 12, 2020Observed: 9.12 ft at 6:15PM Jul 12, 2020Observed: 9.11 ft at 6:30PM Jul 12, 2020Observed: 9.11 ft at 6:45PM Jul 12, 2020Observed: 9.12 ft at 7:00PM Jul 12, 2020Observed: 9.12 ft at 7:15PM Jul 12, 2020Observed: 9.12 ft at 7:30PM Jul 12, 2020Observed: 9.11 ft at 7:45PM Jul 12, 2020Observed: 9.1 ft at 8:00PM Jul 12, 2020Observed: 9.1 ft at 8:15PM Jul 12, 2020Observed: 9.09 ft at 8:30PM Jul 12, 2020Observed: 9.09 ft at 8:45PM Jul 12, 2020Observed: 9.09 ft at 9:00PM Jul 12, 2020Observed: 9.08 ft at 9:15PM Jul 12, 2020Observed: 9.08 ft at 9:30PM Jul 12, 2020Observed: 9.08 ft at 9:45PM Jul 12, 2020Observed: 9.07 ft at 10:00PM Jul 12, 2020Observed: 9.07 ft at 10:15PM Jul 12, 2020Observed: 9.07 ft at 10:30PM Jul 12, 2020Observed: 9.06 ft at 10:45PM Jul 12, 2020Observed: 9.06 ft at 11:00PM Jul 12, 2020Observed: 9.05 ft at 11:15PM Jul 12, 2020Observed: 9.05 ft at 11:30PM Jul 12, 2020Observed: 9.05 ft at 11:45PM Jul 12, 2020Observed: 9.05 ft at 12:00AM Jul 13, 2020Observed: 9.05 ft at 12:15AM Jul 13, 2020Observed: 9.05 ft at 12:30AM Jul 13, 2020Observed: 9.05 ft at 12:45AM Jul 13, 2020Observed: 9.05 ft at 1:00AM Jul 13, 2020Observed: 9.04 ft at 1:15AM Jul 13, 2020Observed: 9.04 ft at 1:30AM Jul 13, 2020Observed: 9.04 ft at 1:45AM Jul 13, 2020Observed: 9.03 ft at 2:00AM Jul 13, 2020Observed: 9.02 ft at 2:15AM Jul 13, 2020Observed: 9.02 ft at 2:30AM Jul 13, 2020Observed: 9.02 ft at 2:45AM Jul 13, 2020Observed: 9.02 ft at 3:00AM Jul 13, 2020Observed: 9.01 ft at 3:15AM Jul 13, 2020Observed: 9.01 ft at 3:30AM Jul 13, 2020Observed: 9.01 ft at 3:45AM Jul 13, 2020Observed: 9.01 ft at 4:00AM Jul 13, 2020Observed: 9.01 ft at 4:15AM Jul 13, 2020Observed: 9.01 ft at 4:30AM Jul 13, 2020Observed: 9 ft at 4:45AM Jul 13, 2020Observed: 9 ft at 5:00AM Jul 13, 2020Observed: 9 ft at 5:15AM Jul 13, 2020Observed: 8.99 ft at 5:30AM Jul 13, 2020Observed: 8.99 ft at 5:45AM Jul 13, 2020Observed: 8.99 ft at 6:00AM Jul 13, 2020Observed: 8.99 ft at 6:15AM Jul 13, 2020Observed: 8.98 ft at 6:30AM Jul 13, 2020Observed: 8.97 ft at 6:45AM Jul 13, 2020Observed: 8.97 ft at 7:00AM Jul 13, 2020Observed: 8.96 ft at 7:15AM Jul 13, 2020Observed: 8.96 ft at 7:30AM Jul 13, 2020Observed: 8.95 ft at 7:45AM Jul 13, 2020Observed: 8.96 ft at 8:00AM Jul 13, 2020Observed: 8.96 ft at 8:15AM Jul 13, 2020Observed: 8.95 ft at 8:30AM Jul 13, 2020Observed: 8.95 ft at 8:45AM Jul 13, 2020Observed: 8.95 ft at 9:00AM Jul 13, 2020Observed: 8.95 ft at 9:15AM Jul 13, 2020Observed: 8.94 ft at 9:30AM Jul 13, 2020Observed: 8.94 ft at 9:45AM Jul 13, 2020Observed: 8.94 ft at 10:00AM Jul 13, 2020Observed: 8.94 ft at 10:15AM Jul 13, 2020Observed: 8.94 ft at 10:30AM Jul 13, 2020Observed: 8.94 ft at 10:45AM Jul 13, 2020Observed: 8.93 ft at 11:00AM Jul 13, 2020Observed: 8.93 ft at 11:15AM Jul 13, 2020Observed: 8.93 ft at 11:30AM Jul 13, 2020Observed: 8.93 ft at 11:45AM Jul 13, 2020Observed: 8.92 ft at 12:00PM Jul 13, 2020Observed: 8.93 ft at 12:15PM Jul 13, 2020Observed: 8.93 ft at 12:30PM Jul 13, 2020Observed: 8.92 ft at 12:45PM Jul 13, 2020Observed: 8.92 ft at 1:00PM Jul 13, 2020Observed: 8.92 ft at 1:15PM Jul 13, 2020Observed: 8.91 ft at 1:30PM Jul 13, 2020Observed: 8.92 ft at 1:45PM Jul 13, 2020Observed: 8.9 ft at 2:00PM Jul 13, 2020Observed: 8.92 ft at 2:15PM Jul 13, 2020Observed: 8.91 ft at 2:30PM Jul 13, 2020Observed: 8.91 ft at 2:45PM Jul 13, 2020Observed: 8.9 ft at 3:00PM Jul 13, 2020Observed: 8.9 ft at 3:15PM Jul 13, 2020Observed: 8.9 ft at 3:30PM Jul 13, 2020Observed: 8.89 ft at 3:45PM Jul 13, 2020Observed: 8.89 ft at 4:00PM Jul 13, 2020Observed: 8.88 ft at 4:15PM Jul 13, 2020Observed: 8.88 ft at 4:30PM Jul 13, 2020Observed: 8.87 ft at 4:45PM Jul 13, 2020Observed: 8.87 ft at 5:00PM Jul 13, 2020Observed: 8.87 ft at 5:15PM Jul 13, 2020Observed: 8.87 ft at 5:30PM Jul 13, 2020Observed: 8.87 ft at 5:45PM Jul 13, 2020Observed: 8.87 ft at 6:00PM Jul 13, 2020Observed: 8.86 ft at 6:15PM Jul 13, 2020Observed: 8.85 ft at 6:30PM Jul 13, 2020Observed: 8.84 ft at 6:45PM Jul 13, 2020Observed: 8.84 ft at 7:00PM Jul 13, 2020Observed: 8.84 ft at 7:15PM Jul 13, 2020Observed: 8.84 ft at 7:30PM Jul 13, 2020Observed: 8.84 ft at 7:45PM Jul 13, 2020Observed: 8.83 ft at 8:00PM Jul 13, 2020Observed: 8.83 ft at 8:15PM Jul 13, 2020Observed: 8.83 ft at 8:30PM Jul 13, 2020Observed: 8.83 ft at 8:45PM Jul 13, 2020Observed: 8.83 ft at 9:00PM Jul 13, 2020Observed: 8.83 ft at 9:15PM Jul 13, 2020Observed: 8.83 ft at 9:30PM Jul 13, 2020Observed: 8.83 ft at 9:45PM Jul 13, 2020Observed: 8.82 ft at 10:00PM Jul 13, 2020Observed: 8.82 ft at 10:15PM Jul 13, 2020Observed: 8.82 ft at 10:30PM Jul 13, 2020Observed: 8.82 ft at 10:45PM Jul 13, 2020Observed: 8.82 ft at 11:00PM Jul 13, 2020Observed: 8.82 ft at 11:15PM Jul 13, 2020Observed: 8.82 ft at 11:30PM Jul 13, 2020Observed: 8.81 ft at 11:45PM Jul 13, 2020Observed: 8.81 ft at 12:00AM Jul 14, 2020Observed: 8.8 ft at 12:15AM Jul 14, 2020Observed: 8.79 ft at 12:30AM Jul 14, 2020Observed: 8.79 ft at 12:45AM Jul 14, 2020Observed: 8.79 ft at 1:00AM Jul 14, 2020Observed: 8.79 ft at 1:15AM Jul 14, 2020Observed: 8.79 ft at 1:30AM Jul 14, 2020Observed: 8.79 ft at 1:45AM Jul 14, 2020Observed: 8.78 ft at 2:00AM Jul 14, 2020Observed: 8.77 ft at 2:15AM Jul 14, 2020Observed: 8.78 ft at 2:30AM Jul 14, 2020Observed: 8.78 ft at 2:45AM Jul 14, 2020Observed: 8.78 ft at 3:00AM Jul 14, 2020Observed: 8.78 ft at 3:15AM Jul 14, 2020Observed: 8.78 ft at 3:30AM Jul 14, 2020Observed: 8.78 ft at 3:45AM Jul 14, 2020Observed: 8.78 ft at 4:00AM Jul 14, 2020Observed: 8.78 ft at 4:15AM Jul 14, 2020Observed: 8.78 ft at 4:30AM Jul 14, 2020Observed: 8.78 ft at 4:45AM Jul 14, 2020Observed: 8.78 ft at 5:00AM Jul 14, 2020Observed: 8.77 ft at 5:15AM Jul 14, 2020Observed: 8.77 ft at 5:30AM Jul 14, 2020Observed: 8.77 ft at 5:45AM Jul 14, 2020Observed: 8.77 ft at 6:00AM Jul 14, 2020U.S. Geological SurveyMROI4(plotting HGIRG) Graph Created (7:03AM Jul 14, 2020)ObservedLatest observed value: 8.77 ft at 6:00 AM CDT 14-Jul-2020. Flood Stage is 15 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
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) 19.96 ft on 07/02/2014
(5) 19.79 ft on 07/12/1969
(6) 19.40 ft on 03/19/1979
(7) 19.21 ft on 03/31/1960
(8) 19.14 ft on 09/06/2018 (P)
(9) 18.92 ft on 06/30/1998
(10) 18.83 ft on 03/17/2019 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 18.42 ft on 05/29/2019 (P)
(2) 18.83 ft on 03/17/2019 (P)
(3) 15.38 ft on 02/06/2019 (P)
(4) 18.76 ft on 10/10/2018 (P)
(5) 19.14 ft on 09/06/2018 (P)
(6) 17.95 ft on 01/20/2017
(7) 16.90 ft on 10/04/2016
(8) 18.31 ft on 12/18/2015
(9) 17.09 ft on 06/25/2015
(10) 19.96 ft on 07/02/2014
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: 41.812778° N, Longitude: 92.064722° 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 Not Available Not Available 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:
Additional Information Collapse
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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
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Davenport, IA 52806-7326
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