I love the flow of water. This is a great shot divided into two halves. I definitely prefer the bottom half which I think makes a better image as a whole. That would include the rocks but exclude the reeds and the fence.
Hehehe, if this place is not too far away, have you already thought about folding a paper boat and photographing that as it races with the current? It is great practice as well as something that I could imagine to bare great results. Hehehe, shots like these are inspirational you know! V