South Fork Shoshone River above Buffalo Bill Reservoir, WY

River level and flood forecast · Park County

Normal5.3 ftas of Mon 1 PM

The river is 4.2 ft below flood stage (9.5 ft).

Flow: 685 cubic feet per second (USGS).

The last 7 days and the forecast

24681012TueWedThuFriSatSunMonAction 8.5 ftFlood 9.5 ftModerate 10.5 ftMajor 12 ftNowObserved (ft)NWS forecast

NWS forecast issued Sun, Dec 31, 5 PM. Forecasts change as rain falls and as upstream water arrives.

Flood stages

Major flood stage12 ft
Moderate flood stage10.5 ft
Flood stage9.5 ft
Action stage8.5 ft
Record crest (June 30, 2011)9.28 ft

What floods at each level

From the National Weather Service, highest first.

  • 10.5 ftLow lying property 3-4 miles upstream of gage will be inundated. Water along low spots near downstream bridge along lower South Fork Road. (Park County Road 6QS).
  • 9.5 ftFlood stage. Minor flooding intensifies and becomes more widespread with low lying property 3-4 miles upstream of gage.
  • 9.41 ftRecord stage and flow---9,960 cfs (6/8/1981).
  • 9 ftWater continiues to encroach low lying property 3-4 miles upstream of gage. Debris jams/ice jams that go against South Fork Bridge and foot bridge may cause high water immediately downstream of gage.
  • 8.5 ftBankfull stage. Water begins to encroach low lying property 3-4 miles upstream of gage. Ice jamming in early winter and in early spring is common.

Highest crests on record

  1. 9.28 ft — June 30, 2011
  2. 9.24 ft — June 9, 2017
  3. 8.61 ft — May 31, 2003
  4. 8.5 ft — June 12, 1991
  5. 8.44 ft — May 30, 2014

Recent crests: 7.95 ft (May 31, 2020) · 8.05 ft (June 8, 2019) · 8.06 ft (June 18, 2018) · 8.19 ft (May 28, 2018) · 9.24 ft (June 9, 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 (BBRW4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.