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Hydrograph River at a Glance Download
Big Sioux River above Dell Rapids Stage (ft)DRBS2(plotting HGIRG) Graph Created (5:48PM Feb 26, 2020)Flood Stage is 1481 ft
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Datum: Not Available
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Gauge reading may be affected by ice.

NOTE: Graphical forecasts are not available for the Big Sioux River above Dell Rapids. During times of high water, forecast crest information can be found in the text products.

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Upstream Gauge - at Trent Upstream Gauge Downstream Gauge Downstream Gauge - near Dell Rapids
Flood Categories (in feet)
Major Flood Stage: 1486
Moderate Flood Stage: 1484
Flood Stage: 1481
Action Stage: 1479.5
Low Stage (in feet): 0

Historic Crests
(1) 1,490.00 ft on 09/13/2019
(2) 1,487.53 ft on 03/24/2019 (P)

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,490.00 ft on 09/13/2019
(2) 1,487.53 ft on 03/24/2019 (P)

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
1487 244th Avenue and Jasper Street will begin flooding, and other roads in Dell Rapids will be flooded.
1485 The City Park and the ball fields on the left bank in Dell Rapids begin to flood, and some farm houses could be surrounded by water.
1481 Agricultural flooding upstream of Dell Rapids begins, and the City Park and ball fields on the right bank in Dell Rapids will begin flooding.
1479.5 The bike trail at the City Park begins to flood.
About This Location Collapse

Latitude: 43.825793° N, Longitude: 96.670580° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 1481 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  
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Hydrologic Resources Additional Resources
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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: 4-Mar-2019 11:29 PM
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