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Hydrograph River at a Glance Download
Little Sioux River above Spencer Stage (ft)Iowa Flood CenterLRGI4(plotting HGIRP) Graph Created (8:04PM Apr 22, 2021)Flood Stage is 1311.5 ft
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Tabular Data (UTC)
Tabular Data (CDT)
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Datum: Not Available
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: Gauge reading may be affected by ice.

NOTE: Forecasts for the Little Sioux River above Spencer are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - near Milford Upstream Gauge Downstream Gauge Downstream Gauge - near Spencer / Highway 18
Flood Categories (in feet)
Major Flood Stage: 15
Moderate Flood Stage: 13
Flood Stage: 10
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 14.45 ft on 07/15/2011
(2) 13.49 ft on 06/20/2014
(3) 13.20 ft on 03/18/2010
(4) 10.99 ft on 03/10/2013
(5) 9.95 ft on 06/01/2012

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.49 ft on 06/20/2014
(2) 10.99 ft on 03/10/2013
(3) 9.95 ft on 06/01/2012
(4) 14.45 ft on 07/15/2011
(5) 13.20 ft on 03/18/2010

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:14
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Gauge LocationGauge Map Marker
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
21 300th Street east of the gage begins flooding.
20 190th Avenue just north of Highway 18 begins flooding.
18 water reaches the bottom of the bridge on 300th Street at the gage.
15 290th Street north of the gage begins flooding as well as 180th Avenue southeast of the gage.
13 major agricultural flooding begins.
10 minor flooding of agricultural lands begins.
About This Location Collapse

Latitude: 43.212778° N, Longitude: 95.239167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
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Page last modified: 2-Nov-2020 7:29 PM
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