so much arguing and not more than one or two constructive post...
You did a really good job making sure that the water isn't over exposed. I also like how you can still see some texture in the water. When it is too smooth i think it looks too fake, but I like what you did with it.
That being said, your composition needs some work and the subjects are pretty cliche. Basically, nothing really stands out too much your shots. Not bad, but nothing outstanding.
The one shot that I do really like is the last one. The last one works for me because the composition of the waterfall leads the eye around the frame in an effective manner. Also, the foliage around the water frames the waterfall very well.
Keep it up!
"When people say you have a one track mind, tell them they're only half right. Skiing leaves 2 tracks!" - Seth Morrison