Snake River near Jackson, WY
River level and flood forecast · Teton County
Normal1.6 ftas of Mon 2:30 PM
The river is 8.4 ft below flood stage (10 ft).
Forecast to rise to 1.9 ft Tue 12 AM, below the 10 ft flood stage.
Flow: 1,820 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 1:08 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Moderate flood stage | 12 ft |
| Flood stage | 10 ft |
| Action stage | 9 ft |
| Record crest (June 11, 1997) | 11.66 ft |
What floods at each level
From the National Weather Service, highest first.
- 11.66 ftRecord stage and flow---30,200 cfs (6/11/1997).
- 11.1 ftFlows in excess of 30,000 cfs can cause substantial erosional damage to the levee system. Levee repair begins to overwhelm available resources. Extended periods of flow at this level seriously threatens low-lying property in the Snake River flood plain below Jackson Lake.
- 10.8 ftMinor damage and/or problems to levee structures between Jackson Lake and the gage site begin. 24-hour monitoring of levees is needed.
- 10.5 ftSnake River begins to cause flooding near the Bridger-Teton National Forest Cottonwood Work Center. Cabins and garages begin to flood and escape routes start to be cut off.
- 10 ftFlood stage. Minor low land flooding.
Highest crests on record
- 11.66 ft — June 11, 1997
- 10.22 ft — June 6, 1986
- 10.12 ft — June 11, 1996
- 10 ft — June 6, 2017
- 9.25 ft — June 29, 1982
Recent crests: 6.4 ft (June 6, 2021) · 8.05 ft (June 7, 2020) · 6.54 ft (May 17, 2019) · 8.97 ft (June 1, 2018) · 10 ft (June 6, 2017)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (JKSW4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.