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FloodSmart
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Hydrograph River at a Glance Download
Shell Rock River (Northeast IA) near Northwood Stage (ft)Flow (cfs)National Weather ServiceNTWI4(plotting HGIRZ) Graph Created (10:33AM Jun 6, 2020)
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Datum: Not Available
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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 are not available for the Shell Rock River (Northeast IA) near Northwood. Only observed stages are available for this point.

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Downstream Gauge Downstream Gauge - at Nora Springs
Flood Categories (in feet)
Not Available

Historic Crests
(1) 12.07 ft on 04/08/1965
(2) 11.68 ft on 03/26/1961
(3) 10.55 ft on 03/26/1969
(4) 10.30 ft on 03/20/1948
(5) 9.78 ft on 03/23/1963
(6) 9.72 ft on 03/28/1950
(7) 9.70 ft on 03/13/1946
(8) 9.67 ft on 03/19/1986
(9) 9.63 ft on 03/30/1979
(10) 9.60 ft on 03/01/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 8.02 ft on 03/24/1997
(2) 6.50 ft on 04/01/1996
(3) 7.91 ft on 04/21/1995
(4) 6.87 ft on 07/23/1994
(5) 6.20 ft on 04/27/1992
(6) 8.05 ft on 05/19/1991
(7) 7.15 ft on 04/30/1991
(8) 4.60 ft on 06/08/1989
(9) 0.00 ft on 07/23/1988
(10) 5.40 ft on 04/30/1988
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:12
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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.
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Latitude: 43.414125° N, Longitude: 93.220759° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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 Not Available Not Available 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
Des Moines Weather Forecast Office
9607 NW Beaver Dr.
Des Moines, IA 50131
(515) 270-2614
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