Major Flood
1545 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: BSFS2). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
1542 ft
Minor Flood
1540 ft
Action Stage
1537 ft
What Floods at Each Level
1550 ft
The Powwow grounds are completely under water, and flooding reaches onto the football field at the high school.
1549 ft
Water reaches the bottom of the bridge on Hwy 13
1545 ft
Highway 13 north of the gauge begins to flood, and the roads leading into the Powwow Grounds are flooded. Also, the areas around 2nd Avenue and Water Street are flooded.
1542 ft
N. Crescent Street north of the bridge floods, the golf course at the Flandreau Country Club begins to flood, and 230th Street floods near the park.
1541.5 ft
Water begins to approach some structures within Flandreau Park
1541 ft
479th Avenue between 224th and 225th Streets begins to flood.
1540 ft
Widespread agricultural flooding begins, Flandreau Park begins flooding, the parking lot at the weir dam is flooded, and the road behind the football field at the high school begins to flood.
1537 ft
Water starts to cross the road at the north end of the park in Flandreau.
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 |
|---|---|---|
| Sep 12, 2019 | 1545.29 ft | — |
| Mar 24, 2011 | 1543.85 ft | — |
| Mar 22, 2019 | 1543.53 ft | — |
About This Gauge
NWS LID
BSFS2
River
Big Sioux River
County
Moody, SD
Coordinates
44.0777°N, 96.5869°W
Get Flood Alerts for Big Sioux River
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 Big Sioux River above Flandreau?
The Big Sioux River above Flandreau gauge is maintained by USGS 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 Big Sioux River above Flandreau?
The NWS-defined flood stage for Big Sioux River above Flandreau is 1540 feet. Action stage begins at 1537 feet. Moderate flooding starts at 1542 feet, and major flooding at 1545 feet.
How do I get alerts when Big Sioux River rises?
Download StormCast free on Google Play, go to River Gauges, and add Big Sioux River above Flandreau 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 Big Sioux River above Flandreau gauge located?
The gauge is located in Moody County, South Dakota at coordinates 44.0777°N, 96.5869°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: Observations courtesy of South Dakota DANR
- No forecasts are available for this location
- Gauge reading may be affected by ice.