Whitemans Pond, Kananaskis Country, Alberta
One of our favourite mountain backroads is a gravel road called the Smith-Dorrien/Spray Lakes Trail. It's a scenic mountain road that begins at Canmore, Alberta (a picturesque mountain town an hour from Calgary) and immediately climbs up the mountain side to a stunning viewpoint overlooking the Bow Valley. Below the ridge of the viewpoint, looking straight down, is one the crystal clear Grassi Lakes, which are an unbelievable colour of turquoise. A short drive from the viewpoint takes you to another beautiful clear turquoise pond called Whitemans Pond. There is no saturation adjustment in these photos - the turquoise colour is natural and true. Seeing these beautiful lakes is always such a great start to this trip.
From Wikipedia about the colour of mountain lakes and streams:
Particles in water can scatter light. The Colorado River is often muddy red because of suspended reddish silt in the water. Some mountain lakes and streams with finely ground rock, such as glacial flour, are turquoise. Light scattering by suspended matter is required in order that the blue light produced by water's absorption can return to the surface and be observed. Such scattering can also shift the spectrum of the emerging photons toward the green, a color often seen when water laden with suspended particles is observed.