Why is the water so blue in Banff National Park?

Nestled in Banff National Park, its pristine turquoise waters reflect the surrounding snow-capped peaks, creating a postcard-perfect scene. This glacier-fed lake owes its dazzling blue hue to the fine particles of rock flour, resulting from glacial erosion.



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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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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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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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The lakes in the mountains that have vivid blue and green colours are glacier fed. As the melt water from a glacier starts to flow in the spring time it carries with it glacier silt or rock flour.

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Banff's drinking water consistently meets all standards set by the Guidelines for Canadian Drinking Water Quality.

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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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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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Lake Louise itself is 61 km from the Town of Banff. The drive takes about 45 minutes along the TransCanada or an hour if you drive the scenic Bow Valley Parkway.

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The clear water in the Blue Lake turns vibrant blue in summer. This is caused from the higher position of the sun in summer which means more light hits the surface of the lake. This increases the blue light that is scattered back out from the lake by small particles.

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Moraine Lake: Nature's Gemstone: Located in the Valley of the Ten Peaks within Banff National park, Moraine Lake is often regarded as a gemstone amidst the Canadian Rockies. Its intense blue color, complemented by a ring of snow-capped peaks, makes it a photographer's paradise.

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