This video documents a dam collapse on our property in Northern Minnesota. The beavers have been building on this dam, adding one and a half feet in height per year for the last 7 years.
Update: DAM REBUILT 6 weeks after this Collapse the Beavers rebuilt the dam to 4 ft high. The pond is now two thirds full and their house entrance should be accessible for the winter. By next summer I expect it to be totally rebuilt.