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Advanced Hydrologic Prediction Service
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This probabilistic forecast is issued by the Missouri Basin River Forecast Center.
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About this graph
Forecasts for the Little Sioux River at Spencer are issued as needed during times of high water, but are not routinely available.
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Downstream Gauge Downstream Gauge - at Linn Grove
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 16
Moderate Flood Stage: 14
Flood Stage: 10
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 20.20 ft on 06/08/1953
(2) 17.60 ft on 06/21/1954
(3) 17.45 ft on 03/15/2019
(4) 17.40 ft on 06/26/2018
(5) 17.37 ft on 04/06/1965
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.89 ft on 05/16/2023
(2) 11.70 ft on 03/10/2020
(3) 17.45 ft on 03/15/2019
(4) 17.40 ft on 06/26/2018
(5) 12.20 ft on 05/23/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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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 the levees in Spencer are overtopped, and Park Street and Grand Avenue in Spencer are flooded.
19.5 flooding begins to affect the Breezy Meadows Addition in Spencer, and most of the city south of the river is flooded.
18 the Spencer Golf and Country Club begins flooding.
16.5 Highway 71 and Highway 18 begin to flood, and West Park Street, 1st Street, and 2nd Street in Spencer are flooded. Some homes and businesses in the southern portions of Spencer are also flooded.
16 Highway 18 near Hawk Valley WMA east of Spencer beings flooding.
14.5 County Road B40 southeast of Spencer begins flooding.
14 city sewers in Spencer can begin to back up. Highway 18 between Spencer and Dickens can start flooding if flows on the tributary creeks are also very high.
10 the right bank overflows, and minor flooding of the Spencer city park and some rural agricultural areas begins.
9.5 the lower left bank overflows and very minor flooding of low lands begins.
(1) Upstream View
(2) Downstream View
Additional Information Collapse
How low could the river get?
Collaborative Agencies Collapse
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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