I like this the way it is and also with a crop along the bottom to remove that branch, but doing as Thomas suggested in burning in the water on the lower RHS will take your eye away from it. It stands on its own as is though... Great image.
Gorgeous - I would also play with the crop: just above the branch and just clearing the right of the group of stones and taking some off from the left to keep a sense of balance - still a beautifully realized print