Big Sioux River below Diversion at Sioux Falls, SD
Is Big Sioux River below Diversion at Sioux Falls, SD flooding right now?
Big Sioux River below Diversion at Sioux Falls, SD measured 3.15 ft on 2026-09-11 00:30:00 UTC. That observation was 11.8 ft below its 15 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
3.15 ft
Streamflow
7 cfs
Minor flooding here begins at 15 ft, with major flooding at 21 ft. The highest crest on record was 9.75 ft on Sat, Jun 22, 2024.
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 14 ft | 10.8 ft below |
| Minor flood | 15 ft | 11.8 ft below |
| Moderate flood | 18 ft | 14.8 ft below |
| Major flood | 21 ft | 17.9 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 9.75 ft | 2024-06-22 |
| 9.2 ft | 2019-03-25 |
| 7.59 ft | 2007-05-17 |
| 7.59 ft | 2022-05-25 |
| 7.24 ft | 2014-06-15 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Silver Creek at Sioux Falls, SD | 2.6 mi | Minnehaha County |
| Big Sioux River at North Cliff Ave at Sioux Falls, SD | 2.7 mi | Minnehaha County |
| Skunk Creek at Sioux Falls, SD | 3.0 mi | Minnehaha County |
| Big Sioux River at Sioux Falls, SD | 5.0 mi | Minnehaha County |
| Willow Creek near Crooks, SD | 5.1 mi | Minnehaha County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.