Castle Creek below Deerfield Reservoir, SD
River level and flood forecast · Pennington County
Normal4.0 ftas of Mon 1:45 PM
The river is 1.5 ft below flood stage (5.5 ft).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Flood stage | 5.5 ft |
| Action stage | 5 ft |
| Record crest (May 31, 2011) | 5.37 ft |
What floods at each level
From the National Weather Service, highest first.
- 12.8 ftWater will reach the floor of the gage house.
- 5.5 ftMinor flood stage. Minor flooding along the creek.
- 5.25 ftSafe channel capacity is 90 cfs.
- 5 ftAction stage. Low land flooding along the banks may begin.
Highest crests on record
- 5.37 ft — May 31, 2011
- 5.34 ft — July 9, 2019
- 5.19 ft — June 30, 2023
- 5.11 ft — June 24, 1998
- 5.08 ft — June 5, 1991
Recent crests: 3.67 ft (June 22, 2024) · 5.19 ft (June 30, 2023) · 3.99 ft (June 11, 2022) · 4.73 ft (May 26, 2021) · 4.77 ft (May 7, 2020)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (DFBS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.