As a canoeist, I was fascinated by the standing waves in the Whirlpool Rapids. These are waves that develop in a river even when there are no rocks, and the water is very deep as it is here. How many rivers do you know that are 40-50 feet deep? The Whirlpool Rapids are Class 6 rapids, on a scale of 1-6, considered unrunnable.
As you can tell, I was really impressed by the White Water Walk right down beside the river!