BIG SIOUX RIVER NEAR CASTLEWOOD, SD
Is BIG SIOUX RIVER NEAR CASTLEWOOD, SD flooding right now?
No — BIG SIOUX RIVER NEAR CASTLEWOOD, SD is at 5.34 ft, 3.7 ft below its 9 ft flood stage, as of 42 min ago.
Gauge height
5.34 ft
Streamflow
90 cfs
Minor flooding here begins at 9 ft, with major flooding at 16 ft. The highest crest on record was 13.19 ft on Mon, Apr 7, 1997.
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 8 ft | 2.7 ft below |
| Minor flood | 9 ft | 3.7 ft below |
| Moderate flood | 11 ft | 5.7 ft below |
| Major flood | 16 ft | 10.7 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 13.19 ft | 1997-04-07 |
| 12.39 ft | 2019-03-28 |
| 12.29 ft | 2011-03-23 |
| 12.27 ft | 2001-04-08 |
| 11.98 ft | 2010-03-15 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| BIG SIOUX RIVER BELOW WATERTOWN, SD | 8.0 mi | Codington County |
| BIG SIOUX RIVER AT BROADWAY AT WATERTOWN, SD | 11.5 mi | Codington County |
| WILLOW CREEK NEAR WATERTOWN, SD | 12.9 mi | Codington County |
| BIG SIOUX RIVER AT WATERTOWN, SD | 15.4 mi | Codington County |
| SOUTH BRANCH TRIB MUD CREEK NR RAUVILLE, SD | 15.6 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.