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Hydrograph River at a Glance Download
Elk Creek (SD) near Roubaix Stage (ft)Flow (kcfs)USGS--Water Resources of the United StatesROBS2(plotting HGIRG) Graph Created (1:37AM Oct 26, 2020)Flood Stage is 11 ft
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Datum: NGVD29
NOTE: Forecasts are not available for the Elk Creek (SD) near Roubaix. Only observed stages are available for this point.
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Downstream Gauge Downstream Gauge - near Rapid City
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 12
Flood Stage: 11
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 12.32 ft on 05/08/1995
(2) 9.14 ft on 03/23/2019
(3) 8.55 ft on 01/29/2017
(4) 8.41 ft on 07/04/2019
(5) 8.32 ft on 08/06/2008
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(P): Preliminary values subject to further review.

Recent Crests
(1) 8.41 ft on 07/04/2019
(2) 9.14 ft on 03/23/2019
(3) 7.94 ft on 06/24/2018
(4) 7.65 ft on 06/11/2017
(5) 8.55 ft on 01/29/2017
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(P): Preliminary values subject to further review.

Low Water Records
(1) 4.50 ft on 07/15/2002
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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.
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If you notice any errors in the below information, please contact our Webmaster
13 Major Flood Stage. Extensive flooding along Elk Creek with inundation of structures and roads.
12.5 Water flows over Forest Service Road 151.
12 Moderate Flood Stage. Water reaches the top of downstream culvert. Water approaches Forest Service Rd 151, backs up near intersection.
11 Minor Flood Stage. Water will rise quickly to 11 ft, then more slowly after that as the streambed will allow water to spread out more after this stage.
9 Action Stage. The lowest areas along the river begin to flood.
(1) Looking upstream
(2) Looking upstream - left bank
(3) Looking downstream
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Latitude: 44.294722° N, Longitude: 103.596389° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 4881 ft 4892 ft 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
Rapid City Weather Forecast Office
300 East Signal Drive
Rapid City, SD 57701-3800
(605) 341-7531
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Page last modified: 1-Mar-2019 12:33 AM
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