hay: the way it was explained to me was, if you can take a boat raft or inertube down it is navigatable(SP)and they cant keep you off it. this is left to interpretation.what the river does to get there I do not think is even a question.no one can own any river.they can only own the land under it and only if it is non navigatable but who wants to argue that with a pissed off land owner.