There was this one back road where the beavers built a dam about 50 feet downstream of the road and flooded it. The army kept blowing up the dam and the beavers kept rebuilding, each time a little more upstream. Eventually the army blew their way though the road (no kidding) and the beaver dam had a big "U" in it facing upstream.
The last time I drove that road was in a friends old 68' Ford Bronco, and we had to drive through flooded road, up and over the dam and down the backside.......where naturally we got stucker than pigs in a poke. We had to get back up over the dam on the other side and onto the flooded road on the other side, but before we could do that we had to tear the dam apart by hand and drain the pond. It took a few hours and a few beers and a whole lot of cussing.
"The nation needs, and has a right to expect, the private landowner to use his land with foresight,
skill, and regard for the future"