On my screen the greens are a bit too in-your-face green, but I see you were going for the contrast with the red rock. I dig the kinda abstract lozenge shape formed by the rocks and water.
Great composition, and study of the foreground water, great lines and exposure! Not so sure on the lighting in some areas though, mainly on the two rocks at either side of the river.
Great shot! Colors are so gorgeous and the composition is perfect. I like the combination between the mist of the water and the texture of the stones. Awesome picture!