Mike, I thought I would give Dawg's suggestion a try. So here is a cloned version of your falls shot. Hope you don't mind. After finishing it I am not sure it looks all that much better than the original. By the way I like the slow shutter speed effect on the water.
The only thing I see with the falls Mike is the buildings detract from the photo. Cloning them out would help but to me moving to a different spot so they don't show up is a better way. Wonderful photo of the duck. Great color and clarity there. All in all I don't see anything much to complain about with any of these.
You did a nice job of cloning. Much better than I could have.
The slow shutter speed was done on purpose but I don't have the steadiest of hands and I didn't have the tripod so it came out relatively well considering it was handheld.