Major Flood
21 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
18 ft
Minor Flood
15 ft
Action Stage
14 ft
What Floods at Each Level
19 ft
Water overtops the walk bridge near the gage.
18 ft
Water reaches the bottom of the walk bridge near the gage.
17 ft
Water reaches the low steel on the walk bridge near the gage.
15 ft
Water reaches the bottom of the levees. If there is a levee failure, flooding in Sioux Falls could occur.
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 |
|---|---|---|
| Jun 21, 2024 | 9.75 ft | — |
| Mar 24, 2019 | 9.2 ft | 2,000 cfs |
| May 16, 2007 | 7.59 ft | 1,000 cfs |
About This Gauge
USGS Site
NWS LID
SFMS2
River
Big Sioux River
County
Minnehaha, SD
Coordinates
43.5731°N, 96.7639°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 at Sioux Falls Maple Street?
The Big Sioux River at Sioux Falls Maple Street gauge is maintained by USGS (site 06481400) 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 at Sioux Falls Maple Street?
The NWS-defined flood stage for Big Sioux River at Sioux Falls Maple Street is 15 feet. Action stage begins at 14 feet. Moderate flooding starts at 18 feet, and major flooding at 21 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 at Sioux Falls Maple Street 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 at Sioux Falls Maple Street gauge located?
The gauge is located in Minnehaha County, South Dakota at coordinates 43.5731°N, 96.7639°W. USGS site number: 06481400. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Big Sioux River
On This River
Upstream: Big Sioux River at Sioux Falls I-90
Downstream: Big Sioux River at Sioux Falls Western Avenue
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey
- No forecasts are available for this location
- Gauge reading may be affected by ice.