I'm guessing the day was slightly overcast - on this calibrated monitor they seem to have a slightly green cast, but maybe it is my eyes - they're beyond calibration
I prefer #1 and #2 in that order - I tend to be a left-to-right person, #3 seems to flow against that bias, but that is just me.
One final comment (and I picking nits now), and I don't know how to judge other than be perhaps filling a card to see what works, but the stream highlights give me the impression of being blown out as a result of too long an exposure? Perhaps bump the ISO and reduce the exposure time?
Reminds me a bit of the Rogue or Smith River Gorges in Oregon & northern California respectively.
2 is very pretty and well exposed and composed. Perhaps I would have had a bit more water and bit less sky since the sky is blown out and its nice to have more water. But I am being picky it is very nice.
1 as said above it appears to have green cast. And the water appears to be overexposed. From a composition perspective I think landscape with more rocks at base, which are very pretty and less height would be better. You have framed off some interesting water on the left.
Last one is very nice composition but the water looks overexposed. I would try processing with a lower exposure and blending to get the water detail back a bit.
2 and 3 are excelent for me. 3 could be better with some processing.
Apart from the comments on possibly blown out highlights, I think each composition is excellent Bring back some of the highlights to improve. Second is my favorite in a very nice series.
To me, the green is almost a motif that says "verdant". That's why I like the choice of the green framing. If they were mine I'd frame them in green, as Ray has done to echo the verdancy and hang them on the wall. An alternate framing might be black to catch bring a somber note that echos the overcast feeling.
