This scene is awesome and very well done. I'm trying to get a scene with very similar coloration for a project I'm working on. The water colors are actually pretty much identical to what I need. The lake I'm modeling is Ross Lake in Washington State, which has the same chalky/milky turquoise coloration with low transparency.
The only thing I'd change in your image is to pull the trees just a bit further away from the shore. Most of those mountain lakes have such varying water levels that most of the time they have an exposed dry shoreline that's 2-7 meters above the waterline.
Top notch work, though, no doubt.