Oak Creek near Wakpala, SD
River level and flood forecast · Corson County
Normal4.9 ftas of Mon 2:45 PM
The river is 5.1 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
| Major flood stage | 16 ft |
| Moderate flood stage | 13 ft |
| Flood stage | 10 ft |
| Action stage | 9 ft |
| Record crest (March 27, 1997) | 19.83 ft |
What floods at each level
From the National Weather Service, highest first.
- 25 ftThe bridge at Mahto is overtopped
- 22.5 ftThe water reaches the bottom of the bridge at Mahto
- 20.5 ftThe bridge just northwest of the gage is overtopped
- 18 ftThe water reaches the bottom of the bridge just northwest of the gage
Highest crests on record
- 19.83 ft — March 27, 1997
- 19.52 ft — March 23, 2009
- 18.62 ft — March 14, 1995
- 18.35 ft — March 23, 1987
- 17.73 ft — April 4, 1986
Recent crests: 11.5 ft (May 21, 2025) · 14.01 ft (April 12, 2023) · 16.95 ft (March 31, 2019) · 6.65 ft (April 18, 2016) · 17.46 ft (July 2, 2015)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WKPS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.