Gros Ventre Slide, Wyoming

Steven Dutch, Professor Emeritus, Natural and Applied Sciences, University of Wisconsin - Green Bay

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Location: 43^o 37' N, 110^o 33' W.

On June 23, 1925, the north side of Sheep Mountain gave way in a huge landslide that blocked the Gros Ventre River. The river backed up to form a lake, Slide Lake. On the afternoon of May 17, 1927, water reached the top of the landslide dam and began eroding rapidly. Although warnings were sounded downstream, six people died in the village of Kelly, a few miles downstream.

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Original Scene

(author's image)

Possible Coloring

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Created 30 June 2009, Last Update 15 January 2020