Nice. I'd crop the top 10% to lose the upper left corner side shoreline and its highlight.
Unless it's possible to get much more detail in the rather amorphous mass of white water in the centre, I'd chop off the entire left-hand half. The flow in the right-hand half gives a pleasing, metallic effect and I think it would look fine on its own.
I'm not convinced by the very marked grain, which I'd guess has been added (look at it at 100%).
Have I missed the leaf?