National Weather Service Advanced Hydrologic Prediction Service

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Weather Forecast Office Sioux Falls, SD

Missouri Basin River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (CST)

Datum: NAVD88

Metadata

NOTE: No forecasts are available for this location

NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts are not available for the Split Rock Creek near Garretson. Only observed stages are available for this point.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	1395
Moderate Flood Stage:	1392
Flood Stage:	1389
Action Stage:	1386
Low Stage (in feet):	-9999

Historic Crests
(1) 1,380.63 ft on 08/18/2020

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,380.63 ft on 08/18/2020

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:16

	Gauge Location	Disclaimer
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

If you notice any errors in the below information, please contact our Webmaster
1400	484th Avenue near the gauging location begins to flood as the bridge is overtopped.
1398	portions of Highway 11 will begin to flood west and southwest of Garretson.
1397	water reaches the bottom of the bridge at the gauging location on 484th Avenue.
1395	some of the roads in Palisades State Park will begin to flood, and water reaches the bottom of the bridges on Highway 11 west and southwest of Garretson.
1392	significant agricultural flooding beings, and portions of 483rd Avenue near 257th Street will flood.
1389	the lower parts of the road at Split Rock Park in Garretson flood, and minor agricultural flooding begins along the entire stretch of the creek.
1386	the lowest banks overflow resulting in minor pasture flooding and flooding to some of the day-use areas in Palisades State Park.

About This Location

Latitude: 43.675600° N, Longitude: 96.531200° W, Horizontal Datum: NAD27

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	1389 ft	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (gauge height = flood stage)	Elevation information source
NAVD88	0.00	1389.00	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

Resources

Hydrologic Resources

Additional Resources

Collaborative Agencies

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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