Nice capture, the motion of the river looks fine, th eonly I would suggest is give more brilliant and solid colors, or even try in B&W, Im sure it would look great, but definely u got a great shot :)
I'd like to see more of the colors and structure of the opposite shore but a good job with the rushing water nonetheless. Being late fall I bet that's icy cold.
This is absolutely wonderful. Lovely capture of this rushing waters..seems like a light fog over the rocks..just fabulous..beautiful overall scene you have here..