RIVER GAUGE · BIG SIOUX RIVER
Big Sioux River at Sioux Falls Maple Street
Minnehaha County, South Dakota
Water level3.15 ft
Flow7 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action14 ft
Minor flood15 ft
Moderate flood18 ft
Major flood21 ft
The past week
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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.
Highest crests on record
| Date | Level | 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 |
More on Big Sioux River
Big Sioux River near Brandon
Big Sioux River near Bruce
Big Sioux River near Brookings
Big Sioux River near Estelline
Big Sioux River above Flandreau
Big Sioux River near Jefferson
Big Sioux River near Richland
Big Sioux River below Watertown
Big Sioux River above Canton
Big Sioux River near Castlewood
Get an alert when Big Sioux River rises
Save this gauge in the free StormCast app and pick the level that matters to you. Your phone goes off when the water gets there.
