Hey Tug remember Harry Senn? One of his first jobs was going around blowing beaver dams to insure adult salmon passage. Thing was Harry noticed a lot of stranded juveniles so he went to his boss with the info along with others and that was stopped. His favorite story was blowing a small hole in a large beaver dam and boom the entire center fell over resulting wall of water closing a county road to a state park. His thoughts were "not my finest moment".