The first is great Christina although I might crop to a square and lose a good chunk of the water if it were mine. Also rotate it a bit while you are at it as it appears to be slanting down the the left
You might also be able to raise the white point on the snow (brighten) on the branches of the trees a bit. The sun wasn't doing you any favors in the last two in terms of being positioned on the background mountains rather that the foreground trees
I applaud your dedication to go out and shoot in that weather. Although I'm a BC gal I've spent almost 20 years in a warmer climate and have become quite a woos when it comes to being cold!