Bird, the Buffalo river in Arkansas is a natural set aside river, no flood control. I have done white water canoe there (with my wife.) The last time we did it we spent the entire day on the river and then in the evening went to my wife's cousin's house (she and her husband are both rangers there.) The next morning after a little (not all that much) overnight rain the husband ranger takes us down by the river to see it.

It is up over 25 feet and whole cottonwood trees over 3 ft in diameter are tumbling end over end down the river. Pretty impressive, especially considering it was where we were "playing" in the white water less than 12 hrs before.

Pat