The USGS frequencies are calculated from historical data for the Yellowstone River’s locations. However, Chase noted in the release, “while these floods are often referred to as greater than (or rarer than) a 1 in 500-year event, there is the same probability that they could occur in any given year.” “At two streamgages, Yellowstone River at Corwin Springs and Yellowstone River at Livingston, the peak streamflow was higher than the 0.2% (or 1 in 500-years) flood (level),” said USGS hydrologist Katherine Chase in the release.įarther downstream, “the Yellowstone River at Billings was between the 1% (or 1 in 100-years) and 0.2% (1 in 500-years) flood,” according to the release, which pointed out streamflow data is “currently being reported as ‘provisional’ until followup analyses of the stream channel and data are completed.”
Montana couple describes the 'unbelievable' moment their home was swept away into the Yellowstone River Victoria and TJ Britton's house in Gardiner, MT, was swept away by the Yellowstone River on J(Source: AJ Rhoads) AJ Rhoads
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