Location: 43o 37' N, 110o 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.
Created 30 June 2009, Last Update 14 December 2009
Not an official UW Green Bay site