I had the great fortune of growing up near beavers in the creek near my house. They would build dams in areas where rocks had gathered in the creek, utilizing t

I had the great fortune of growing up near beavers in the creek near my house. They would build dams in areas where rocks had gathered in the creek, utilizing the natural advantage instead of starting from scratch. I remember watching them swim in and out of their lodge with their young kits. They didn't really flood areas, they just raised the level of the creek. Heavy rains would wipe out their dams and they'd rebuild. Fascinating creatures!