Missouri River at Chamberlain, SD
River level and flood forecast · Brule County
Normal50.0 ftas of Mon 1:30 PM
The river is 15.0 ft below flood stage (65 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 | 70 ft |
| Moderate flood stage | 68 ft |
| Flood stage | 65 ft |
| Action stage | 63 ft |
| Record crest (July 8, 2011) | 75.08 ft |
What floods at each level
From the National Weather Service, highest first.
- 70 ftAmerican Creek recreation area will flood.
- 68 ftSome homes begin to be affected by flood waters.
- 66 ftWater reaches the top of the boat ramps at American Creek camp ground, West Bridge, and Snake Creek East.
- 65 ftAmerican Creek marina just upstream of the gauge will begin flooding, and water reaches the top of the boat ramp near Buryanek camp ground.
- 63 ftCamp grounds begin to flood.
- 62 ftWater reaches the top of the boat ramps at American Creek marina, Elm Creek #3, Crow Creek, and Dude Ranch.
- 61 ftWater reaches the top of the boat ramps at Boyer and Snake Creek West.
Highest crests on record
- 75.08 ft — July 8, 2011
- 72.21 ft — May 2, 1997
- 71.08 ft — June 2, 2019
- 68.38 ft — June 23, 2010
- 67.93 ft — June 2, 1995
Recent crests: 58.01 ft (July 4, 2025) · 61.44 ft (July 6, 2024) · 57.91 ft (June 2, 2023) · 57.52 ft (May 6, 2022) · 57.11 ft (September 2, 2021)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (CBLS2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.