How much has Yellowstone’s Hayden Valley risen since the 1920’s?



  1. 0 Votes

    It has risen between 1 and 3 inches every year since 1923 when scientists starting measuring the areas change in land.

  2. 0 Votes

    The other answer misquotes the cited reference, which says that Yellowstone’s caldera floor (not Hayden Valley in particular) has risen at almost 3 inches per year for three years (2004-2007). The rates of rise before that, since measurements have been made in 1923, were much smaller. The caldera floor has both risen and fallen since 1923.

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