Willow Creek near Watertown, SD
River level and flood forecast · Codington County
Normal5.8 ftas of Mon 2 PM
The river is 4.2 ft below flood stage (10 ft).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 6 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Flood stage | 10 ft |
| Action stage | 9 ft |
| Record crest (April 11, 2023) | 13.55 ft |
Highest crests on record
- 13.55 ft — April 11, 2023
- 12.86 ft — August 22, 2025
- 12.51 ft — April 7, 2001
- 12.45 ft — March 24, 2019
- 11.7 ft — March 16, 2009
Recent crests: 12.86 ft (August 22, 2025) · 13.55 ft (April 11, 2023) · 8.45 ft (April 2, 2020) · 12.45 ft (March 24, 2019) · 10.46 ft (February 18, 2017)
Up and down the river, and nearby
- South Branch Tributary Mud Creek near Rauville, SD
- Big Sioux River at Watertown Broadway Avenue, SD
- Big Sioux River below Watertown, SD
- Big Sioux River at Watertown Sioux Conifer Road, SD
- Big Sioux River at Lake Kampeska, SD
- Mud Creek near Rauville, SD
- Lake Kampeska at Watertown Water Plant, SD
- Big Sioux River near Watertown, SD
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WWCS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.