This is a beautiful scene, nicely composed to take advantage of the way the river comes in on a diagonal and then starts its exit on an opposing diagonal. That moves our eye through the frame nicely. It is also nicely focused with good depth of field and detail well back into the frame. It looks to have been a cloudy day which made it easier to avoid over-exposing the sky, but as a result the entire image appears slightly unexposed and dark on my monitor; it lacks the pop that would give it good impact. The other little thing I would consider is cloning out the triangle of light grass in the lower left corner as I find it distracting.