Major Flood
16 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
14 ft
Minor Flood
12 ft
Action Stage
10 ft
What Floods at Each Level
16 ft
Major flood stage. Significant and widespread flooding along the South Fork of the Grand River from Divide Road to Shadehill Reservoir. Water may approach portions of Divide Road.
14 ft
Moderate flood stage. Widespread flooding of pasture lands along the South Fork of the Grand River. Water will approach the low steel on the Divide Road bridge.
12 ft
Minor flood stage. Minor flooding of pasture land along the South Fork of the Grand River from Divide Road to White Butte Road upstream of Shadehill Reservoir.
10 ft
Action stage. Low lying areas along the South Fork of the Grand River will be innundated.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Apr 14, 1950 | 15.4 ft | 27,000 cfs |
| Mar 21, 1947 | 14.35 ft | — |
| Apr 5, 1952 | 13.59 ft | 15,600 cfs |
About This Gauge
USGS Site
NWS LID
CSHS2
River
South Fork Grand River (SD)
County
Perkins, SD
Coordinates
45.6487°N, 102.6433°W
Get Flood Alerts for South Fork Grand River (SD)
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of South Fork Grand River (SD) near Cash?
The South Fork Grand River (SD) near Cash gauge is maintained by USGS (site 06356500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for South Fork Grand River (SD) near Cash?
The NWS-defined flood stage for South Fork Grand River (SD) near Cash is 12 feet. Action stage begins at 10 feet. Moderate flooding starts at 14 feet, and major flooding at 16 feet.
How do I get alerts when South Fork Grand River (SD) rises?
Download StormCast free on Google Play, go to River Gauges, and add South Fork Grand River (SD) near Cash to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the South Fork Grand River (SD) near Cash gauge located?
The gauge is located in Perkins County, South Dakota at coordinates 45.6487°N, 102.6433°W. USGS site number: 06356500. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
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Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- Gauge reading may be affected by ice.