A tree falls in the river.....?
I live on the banks of a river, which although not navigable is used by fisherman and occasional kayakers. A tree fell down on my neighbor's property (across the river from me) and is not completely blocking the river. Some branches are on my side, which is not a problem. But... is my neighbor responsible to remove his tree from the river? What government agency has jurisdiction to compel him to move it? Local authorities are not interested.