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Hydrograph River at a Glance Download
West Fork Little Sioux River near Lake Park Stage (ft)Iowa Flood CenterLPRI4(plotting HGIRP) Graph Created (1:34PM May 26, 2024)Flood Stage is 1396 ft
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Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
NOTE: No forecasts are available for this location

NOTE: Forecasts are not available for the West Fork Little Sioux River near Lake Park. Only observed stages are available for this point.

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Flood Categories (in feet)
Major Flood Stage: 1400
Moderate Flood Stage: 1398
Flood Stage: 1396
Action Stage: 1395
Low Stage (in feet): -9999

Historic Crests
(1) 1,399.40 ft on 06/24/2018
(2) 1,398.79 ft on 03/16/2019
(3) 1,395.90 ft on 03/16/2018
(4) 1,394.73 ft on 05/19/2020
(5) 1,394.68 ft on 04/04/2023

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,394.68 ft on 04/04/2023
(2) 1,394.73 ft on 05/19/2020
(3) 1,398.79 ft on 03/16/2019
(4) 1,399.40 ft on 06/24/2018
(5) 1,395.90 ft on 03/16/2018

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
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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
1413.5 the Highway 9 bridge north of the gauge is overtopped.
1411 water reaches the bottom of the Highway 9 bridge north of the gauge.
1404 the bridge on 160th Avenue south of Highway 9 is overtopped.
1400 160th Avenue begins to flood south of Highway 9.
1398 significant amounts of crop and pasture land are flooded north of Highway 9, and 125th Street just east of the river northeast of Lake Park begins flooding.
1396 crop and pasture land begins to flood between Lake Park and Montgomery.
(1) upstream view
(2) at gage
(3) downstream view
About This Location Collapse

Latitude: 43.419586° N, Longitude: 95.269068° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 1396 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 0.00 1396.00 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  
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Hydrologic Resources Additional Resources
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: 30-Oct-2020 4:09 PM
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