Why are some lakes turquoise?

Answer and Explanation: Glacial lakes often have a magnificent turquoise color, and this is thanks to tiny sediment particles suspended in the water called rock flour.



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Answer and Explanation: Glacial lakes often have a magnificent turquoise color, and this is thanks to tiny sediment particles suspended in the water called rock flour. Basically, the slow and relentless grinding of a glacier over exposed bedrock erodes the rock into tiny, silt-sized particles.

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The larger, silty sediments then begin settling to the bottom of the river, leaving only the finer ones suspended in the water. This is the sweet spot where you get the teal/turquoise color.

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Dissolved organic matter, such as humus, peat or decaying plant matter, can produce a yellow or brown color. Some algae or dinoflagellates produce reddish or deep yellow waters. Water rich in phytoplankton and other algae usually appears green. Soil runoff produces a variety of yellow, red, brown and gray colors.

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Blue water lakes contain low concentrations of algae and other substances, resulting in high clarity and a deep blue color. Water molecules absorb longer, visible wavelengths (e.g. red light, 600-700 nm) while shorter, blue wavelengths (< 500 nm) pass deeper into the water column.

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Where is the most turquoise water in the USA?
  • Blue Hole – Santa Rosa, New Mexico.
  • Chena Hot Springs – Fairbanks, Alaska.
  • Las Olas Beach – Fort Lauderdale, Florida.
  • Grand Lake – Grand Lake Colorado.
  • La Jolla Cove – San Diego, California.
  • Sail Bay – San Diego, California.
  • Lake Conway – Edgewood, Florida.


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13 of the most crystal clear waters on Earth
  • Lake Mashu, Japan. ...
  • The Maldives. ...
  • Sheosar Lake, Pakistan. ...
  • Peyto Lake, Canada. ...
  • Abel Tasman National Park, New Zealand. ...
  • The Weddell Sea, Antarctic Peninsula. ...
  • Cancun, Mexico. ...
  • Cook Islands (Rarotonga)


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Above the Sugar Loaf Dam west of Leadville, Colorado the Turquoise Lake is a man-made reservoir that sits around 10,000 feet of elevation in Lake County.

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It is common to see dyed water in public and recreational establishments, such as golf courses, recreation parks, ornamental ponds and decorative fountains. Aquatic dyes add blue or blue-green color to the water to reduce sunlight penetration.

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An Invasive Species in Lake Michigan. Invasive zebra mussels are mostly responsible for the increased clarity of Lake Michigan.

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Lake Superior is the Cleanest and Clearest Great Lake Because of its somewhat isolated location and long cold winters, not much farming is done along Superior's shores. This means lower amounts of nutrients, sediments, and organic material are floating around the lake.

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So you know how when you go for a dip in the ocean and you come out covered in salt crust and with the distinct stench of rotting seaweed? Yeah, that doesn't happen in the Great Lakes. The water may be colder, but it's wonderfully clean.

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Torch Lake in Antrim and Kalkaska counties proves that beauty can always be found close to home as it has the bluest water in Michigan.

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As you can tell by now, many factors come into play to create the perfect turquoise color that defines the Caribbean. We are lucky to enjoy mother nature showing off with the beautiful intense tones that Cancun gives to everyone who visits.

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