Big Sioux River near Watertown, SD
Is Big Sioux River near Watertown, SD flooding right now?
Big Sioux River near Watertown, SD measured 3.90 ft on 2026-10-27 18:00:00 UTC. That observation was 6.1 ft below its 10 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
3.90 ft
Streamflow
7 cfs
Minor flooding here begins at 10 ft, with major flooding at 12 ft. The highest crest on record was 12.33 ft on Sat, Apr 7, 2001.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 9 ft | 5.1 ft below |
| Minor flood | 10 ft | 6.1 ft below |
| Moderate flood | 11 ft | 7.1 ft below |
| Major flood | 12 ft | 8.1 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 12.33 ft | 2001-04-07 |
| 12.09 ft | 1997-04-05 |
| 11.85 ft | 2023-04-13 |
| 11.21 ft | 2019-03-28 |
| 11.13 ft | 1991-06-21 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Mud Creek near Rauville, SD | 2.9 mi | Codington County |
| Still Lake Outflow near Florence, SD | 3.0 mi | Codington County |
| Big Sioux River at Lake Kampeska near Watertown, SD | 4.0 mi | Codington County |
| Lake Kampeska Inlet/Outlet near Watertown, SD | 4.0 mi | Codington County |
| Big Sioux River at Watertown, SD | 4.5 mi | Codington 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.