Hi and welcome aboard the site!
I know the blue lake very well, as I work in the area and see it a lot. This shot doesnt really show the bright blue you can get at different times of the day and from different angles. From up on the road, shooting away from the main entrance, you would have got a better angle.
I like your framing with the tree on the right, and the saturation & colour is nice in the image. The reds in the tree trunk contrast nicely with the greens. It might be worth cloning out the light in the middle of the image.