Why are Canadian lakes so blue?

As glacial meltwater carries sediments, it creates a suspension in the water, scattering light and causing it to appear blue. The combination of glacial milk and the reflective properties of the suspended rock flour particles results in lakes such as Lake Moraine and Lake Louise exibiting breathtaking shades of blue.



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Glacial-fed alpine lakes in the Rocky Mountains are among the clearest in the world. Fine rock dust, produced by massive glaciers rubbing against bedrock, stays suspended in the water, reflecting light and creating the turquoise colours that Moraine Lake and Lake Louise are known for.

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As glaciers erode, they grind down the rock below them, creating a fine sediment that's commonly called rock flour. “So the turquoise-ish appearance of those alpine lakes comes from the eroded rock material that pours into them from melting glaciers,” says Rolf Vinebrooke of the University of Alberta.

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Fine particles of pulverized rock absorb and scatter sunlight in ways that can give water a striking blue-green color.

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Technically yes, you can swim at Lake Louise, but it probably won't be for long. The water temperature rarely gets above 4°C, meaning you only have about 15 minutes or so until you become hypothermic.

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Most Canadian lakes are of glacial origin. Movements of the Earth's crust, ie, folding and faulting, can create basins later filled by lakes. Lake Superior has been formed by glacial and tectonic processes.

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The park's glacier-fed lakes provide spectacular photo opportunities, but most are much too cold for swimming. There are, however, a variety of public swimming facilities throughout the national park.

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Blue Lake, New Zealand
But the country is also famous for having the clearest lake in the world! Blue Lake has underwater visibility up to 70 to 80 meters or 230 to 260 feet down, which is insane! Apart from being the world's clearest lake, it's also the clearest body of natural freshwater.

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Blue Lake, New Zealand Blue Lake has underwater visibility up to 70 to 80 meters or 230 to 260 feet down, which is insane! Apart from being the world's clearest lake, it's also the clearest body of natural freshwater. The water in Blue Lake is comparable to distilled water based on laboratory measurements.

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Lake Annecy, France Located in the Haute-Savoie department, which borders Italy and Switzerland, Lake Annecy is a pristine body of water that's often called the cleanest lake in Europe, thanks to strict environmental regulations set in place in the 1960s.

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Lake Louise has always been renowned as one of the best hiking and mountaineering areas in Canada – offering a plethora of excellent summer trails for beginners and experts alike.

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Lake Louise was named as a tourist trap in Banff.

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Roopkund (locally known as Mystery Lake or Skeleton Lake) is a high altitude glacial lake in the Uttarakhand state of India. It lies in the lap of Trishul massif.

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The Blue Lake, New Zealand Scientists in 2011 found out that this is the clearest lake in the world. The waterbody is fed by another glacial lake, which is free of debris.

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Lake Pukaki, New Zealand This silt absorbs purple and indigo wavelengths, and the water absorbs red, orange, and yellow, leaving the dazzling blue-green water that allures hikers, bikers, and lakeside strollers.

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