I love shooting waterfalls, if I were to take these shots, this is what I would do....
#1
Pick a subject, as it sits (although a nice shot) Pick one or the other. If you must have both in the one shot, allow for a longer shutter to make the foreground water as smooth as the background waterfall. If you want to have the shot is it sits with both sections of water, compose the shot with the rear fall to the left of the photo as to lead the foreground water to the right. This is the natural flow of the water and adds to the composition and flow, with the left side of the creek line just off the side of the frame giving you some edge so that it is closer in composition like #2(if that makes sense).
#2
If I were to shoot this, I would again allow for a longer shutter speed, (to my eyes) the water looks out of focus (I know its not). Leave the shutter open longer and allow the water to smooth out more. Also, with composition the left side is good, I would bring the top down to get rid of the background waterfall, I find it distracting. Half of a waterfall doesn't really add to the shot for me and I find my eyes drawn to it.
Ideally I would use the composition of the second and the camera placement of the first to create a single shot with the full waterfall in the back, a slight view of the pool its falling into with the water leading to the bottom right hand corner. A nice long shutter speed of 5 to 10 seconds. Here is a link to my favorites that I have done, maybe it will explain better seeing it than I did hear typing it. Again, this is just the way I shoot waterfalls. You may not like this way..... but its my 2 cents.
https://www.flickr.com/photos/stevepwns/sets/72157644078108255/