Sunday Gulch near Hill City, SD
River level and flood forecast · Pennington County
Normal4.4 ftas of Mon 12:45 PM
The river is 2.6 ft below flood stage (7 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
| Major flood stage | 11 ft |
| Moderate flood stage | 9 ft |
| Flood stage | 7 ft |
| Action stage | 6 ft |
| Record crest (May 20, 2024) | 4.33 ft |
What floods at each level
From the National Weather Service, highest first.
- 11.7 ftSpring Creek completely covers Needles Highway.
- 11 ftMajor flood stage. Major and extensive flooding downstream in Hill City.
- 10.9 ftWater from Spring Creek begins to flood portions of Needles Highway.
- 9 ftModerate Flood Stage. Some inundation of structures and roads are possible downstream in Hill City.
- 7.2 ftWater overflows both the left and right bank with water reaching the gage house footings.
- 7 ftMinor Flood Stage. Minor flooding of pasture land. The river begins to spread out. Minor flooding may begin downstream in Hill City.
- 6 ftAction Stage. The lowest areas along the left bank begins to flood.
- 5.8 ftWater begins to overflow the left bank near the gage.
Highest crests on record
- 4.33 ft — May 20, 2024
Recent crests: 4.33 ft (May 20, 2024)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SUNS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.