Whose lake is one of the clearest in the world because it is fed mainly by rain and snow?

Crater Lake’s remarkable clarity comes from its isolated setting in the caldera of Mount Mazama. Because it has no major inlets, the water is not heavily loaded with sediment from rivers. Instead, it is replenished mainly by rain and snow. The lake’s depth and volcanic basin help preserve its clarity and vivid blue color. Scientists and visitors alike prize it as one of North America’s most distinctive freshwater bodies.