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Why are lakes green in Switzerland?

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If lakes are green in Switzerland, then it's for the same reason as everywhere else in the world: a Green algae bloom. Here an image from a Lake in Central Park, New York. read more

If lakes are green in Switzerland, then it’s for the same reason as everywhere else in the world: a Green algae bloom. read more

Lake Brienz (Brienzersee in Swiss) displays beautiful turquoise and emerald hues, colors often associated with shallow Caribbean waters. However, Lake Brienz is not shallow, plunging to depths of around 800 feet. Its beautiful colors result from glacial particles known as "rock flour" that reflect the blue-green sector of the light spectrum. read more

Volcanic and Hydrothermal: Lakes and rivers in volcanic region and of hydrothermal origin also appear turquoise to sky-blue. For example, kawah Ijen (Indonesia), Yudamari lake (Japan) which appears blue as a result of scattering from sulphate and ferrous particles. read more

For a list of lakes above 800 metres that includes smaller water bodies, see List of mountain lakes of Switzerland. Along with the mountains, lakes constitute a major natural feature of Switzerland, with over 1000 km of shores within the country. read more

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Lake Luzern (Lucerne)
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What makes the water ice blue?
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Why is the lake green?
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