In the sense that you are in a slow drift, so quiet, so peaceful. You can hear the quiet voices of the other rafts in your party, an occasional laugh or shout of, "Don't you dare". The water is calm but cold. An Osprey soars overhead, calling to it's mate. Every now and then the water is broken by the rise of a Steelhead feeding on the winged insect that ventured too close to the water's still surface. The sun is hot, almost too hot, the bottled water fixes that. You drift lazily around a bend, and a noise appears, faint but you recognize it well. One oar touches the water and then the other. There is a sense of bustle as people move about, stowing gear. That faint noise becomes a low roar. As it becomes louder you notice that you are tensing up a little. You look ahead but all you see is the flat water, just end. It's like the edge of a painting, you see the still water end and then, nothing but an occasional spray of water. They call it the "lip".
"What is this one", someone calmly asks.
"Argo Falls", comes the reply.
"You may want to bungee that ice chest."
You recall last week someone mentioning Argo is a good one this year, then some remark about a "boat eater". At the oars, they stand on tip toes trying to get a peek. Now it's a roar, very loud. The adrenalin rushes, the breaths come quicker as you get your first look, about 20 feet before the lip. No time for adjustments now, the position you have now will have to do. You're moving faster now. A dig or two on the oars to get that perfect line. The bow dips down as the back seems to rise and you go into this hole. Then suddenly WHAM...
You hit this wall of water and there is a pause as the water rushes over the edge of the raft. Then it repeats, each time you lose a bit more of that safe seating you had. As it tails out, you get back into that seat you had and turn to watch as the rest of the party goes through. You keep an eye on them, did they get a better line on it? And you look too, to see if you need to catch any thing that may be floating.
All is good, some comments and it's back to the silence, the slow drift, the hot sun is nice now. You had almost forgotten how cold that water is.

You see, Argo Falls is not really a "water falls" in as much as it feels like one. But then again, Dunn Riffle is by no means just a riffle.

It's the contradiction of it all, so calm yet suddenly violent, that I think is unique to white water rafting.