The place is just so beautiful- from what I've read, several explorers made their way down this river in the early to mid 1800s. Must of been like, follow the yellow brick road.
The texture in the water is interesting, but I would still consider cropping out the front (lower) quarter of the image, possibly even more. It would result in an odd aspect ratio - a panorama, in effect - but I think it would give proper weight to the various elements in the picture.
Thanks everyone! The more I work with the sigma 10-20 the more I'm learning it's weirdness. Oddly enough, I'm becoming comfortable with it.
IF, doing a screen/scroll crop is interesting, clipping out the rocks entirely makes for an entirely different (and cool) shot. Very simple and clean. Thanks.