I’ll just edit instead!
Huh. Do you live pretty far from where beavers do (not asking you to be specific)?
But yes, beavers are great. They are what is known as a “keystone species” because they create the wetland environments that many other species depend on to live in. They eat wood, and yes, the way they build dams is by piling debris/wood wherever they find/hear flowing water, until they’ve plugged it all up. Then they build a lodge with an underwater entrance in the pond they made, and stock it with sticks to eat through the winter. I think they are adorable.