Keyapaha River at Wewala, SD
River level and flood forecast · Tripp County
Normal2.2 ftas of Mon 1:15 PM
The river is 7.8 ft below flood stage (10 ft).
Flow: 41 cubic feet per second (USGS).
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 | 13 ft |
| Moderate flood stage | 12 ft |
| Flood stage | 10 ft |
| Action stage | 8 ft |
| Record crest (March 25, 1950) | 13.5 ft |
What floods at each level
From the National Weather Service, highest first.
- 17 ftWater reaches the bottom of the Highway 183 bridge.
- 14 ftWater reaches the top of the Highway 183 Bridge piers with water reaching the
- 13 ftMajor Flood Stage. Extensive flooding of agricultural land. Roads and structures along the river may be flooded.
- 12 ftModerate flood stage. Flooding may impact roads and structures along the river. Water may begin to reach the low steel of the bridge.
- 10 ftFlood stage. Flooding of agricultural land. Near the Highway 183 bridge, flooding mainly occurs along the left bank.
- 8 ftFlooding of low lying areas along the river.
Highest crests on record
- 13.5 ft — March 25, 1950
- 13.08 ft — March 31, 1952
- 10.56 ft — March 24, 1960
- 9.9 ft — March 22, 2019
- 9.67 ft — March 4, 1994
Recent crests: 5.58 ft (June 21, 2024) · 7.66 ft (February 6, 2024) · 4.84 ft (June 24, 2023) · 4.13 ft (May 1, 2022) · 4.79 ft (January 25, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WEWS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.