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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 Floyd River at Le Mars are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - near Struble Upstream Gauge Downstream Gauge Downstream Gauge - at Merrill
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 24
Moderate Flood Stage: 21
Flood Stage: 20
Action Stage: 18
Low Stage (in feet): -9999

Historic Crests
(1) 26.40 ft on 06/08/1953
(2) 26.40 ft on 09/21/2018
(3) 25.84 ft on 03/14/2019
(4) 24.50 ft on 06/21/1996
(5) 24.40 ft on 04/03/1973
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(P): Preliminary values subject to further review.

Recent Crests
(1) 12.64 ft on 03/23/2023
(2) 13.55 ft on 05/27/2020
(3) 25.84 ft on 03/14/2019
(4) 26.40 ft on 09/21/2018
(5) 20.50 ft on 06/20/2014
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
26.3 flood water begins to flow across State Highway 3 west of Le Mars near the bridge over the Floyd River.
24 approximately 2100 acres of farm land are flooded.
22 approximately 1400 acres of farm land are flooded.
21 flooding begins to affect 4th Avenue NE in Le Mars.
20.5 160th Street near Highway 60 is flooded.
20 some agricultural land begins to flood, and the low lying areas in the western edges of Le Mars begin to flood.
(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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