The massive sense of scale of this place is totally lost in this photo, but to give a little perspective, the waterfall is maybe 25' high, and, I've circled Christy (red circle in upper left along the trees).
The pool that the waterfall is crashing down into is in a constant, massively powerful churning motion. If you notice, no water is exiting that pool visibly. It is bubbling up from below into the next level of the creek!!