Natural Hazards Map

Land Slide Map

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Landslides

According to Jim Case, geologist with Wyoming State Geologic Survey (WSGS), "All land slides should be considered a potential hazard." He suggests that a site be inspected by a professional geologist or professional engineer to determine if a landslide potential exists. Contact the WSGS by email for additional information or by phone at 766-2286.

The biggest landslide to occur in Teton County was the Gros Ventre Slide in 1925. The devastation caused by this slide on the north side of Sheep Mountain is still visible today from much of Grand Teton National Park and the Jackson Hole valley.

Photo above, of flooding at Slide Lake caused by the 1925 Gros Ventre Slide, courtesy of the Collection of Jackson Hole Historical Society & Museum, Jackson, Wyoming.