Blog 9: Blue lakes of Alberta
As Iâm sure everyone knows by now, I love talking about my experiences living in Banff, Alberta. The Rockies have a way of speaking to your soul, and once they do, you canât help but share their magic with others. Today, I want to take you to one of the most jaw-dropping sights in nature. The unbelievably blue lakes of Alberta.
If youâve ever seen a photo of Lake Louise, Moraine Lake or Peyto Lake, you know exactly what I mean. These lakes arenât just blue, theyâre an unimaginable bright turquoise, so unreal that they seem fake. Before I saw them in person, I was convinced that every photo Iâd seen was edited. No way the water could be that colour. Then, the day came when I saw Lake Louise for the first time.
Youâre finishing the last stretch of a hike. The air smells like fresh pine, the earthy tones of the forest surround you, and the sky is a crisp clear blue. As you take those final steps to the lookout, suddenly, there it is, a shimmering turquoise lake, sparkling like diamonds against the earthy tones of mountains. It looks fake, like nothing youâve ever seen before.
The first time I saw these lakes, I couldnât believe my eyes. Lake Louise, Peyto Lake, and Moraine Lake are some of the most photographed places in Canada, and now I understood why. Growing up in Ontario, I was used to deep blue, murky and brownish green lakes. Beautiful, sure, but nothing like this. This was something I expected to see in the Swiss Alps, not in my own country.
So what exactly makes them this unreal colour?
The answer lies in the glacial flour, tiny rock particles created when glaciers grind against the mountains over thousands of years (Canadian Rockies, 2024). When the snow from winter melts off the glaciers in the spring and summer, they carry this flour into the lakes. The particles are suspended in the water, and scatter sunlight. The lake absorbs reds and yellows and reflect intense blues and greens. This is what gives the lakes their vivid turquoise colour (Canadian Rockies, 2024). They are most vivid in the summer when there is more glacial flour present. The two photos below are Peyto Lake (left) and Moraine lake (right).
Winter also brings a different magic to these lakes.
In winter, these lakes freeze over and become stunning outdoor skating rinks. Peyto lake, in particular is famous for its crystal-clear ice. When it freezes, you can see deep below the surface where captured air bubbles and rocks lie below.
One of the coolest phenomena Iâve ever seen is candle ice. In early spring, as the lakes start to melt, the ice doesnât just disappear into chunks. The ice breaks into long, needle like formations, that look like delicate glass rods floating in the water. This happens because the lakes (already close to frozen) form ice so quickly in the winter that ice crystals develop at an accelerated rate. This is called flash freezing. When melting begins in spring, the ice separates into its unique candlestick structure. There are thousands of these ice pieces floating through the water, but this only occurs for a limited time when melting first starts to happen. I have added a video from the first time I discovered candle ice.
During my time in Banff, I worked at the Fairmont hotel, where I constantly met visitors from all over the world. Guests constantly asked about the lakes, mountains, and wildlife. Without even realizing it, I became an environmental interpreter by helping people connect with nature through education. The textbook states âLocal interpreters can set a goal to help all residents of a locality, and visitors, to learn the historical and natural features of the areaâ (Beck et al. 2018, p460). As more guests asked me questions, I started to develop an interest in sharing my knowledge. I asked locals, read signs, and researched the science behind the lakes, so that I could give people interesting and accurate answers. I realized how important it is to share these facts, so people werenât just seeing a pretty lake, but witnessing an incredible natural process at work.
These three lakes arenât just famous landscapes, they are living proof of the power of glaciers, geology and evolution. They have reminded me that nature is interconnected, and our ecosystems are fragile. We are lucky to witness such beautiful things. If you ever get a chance to visit, I promise you, no photo or video can compare to what itâs like to stand in front of these lakes.
Beck, L., Cable, T. T., & Knudson, D. M. (2018). Interpreting cultural and natural heritage: For A Better World. SAGAMORE Publishing, Sagamore Venture.
Reggiani, J. (2024, July 17). Have you ever seen candle ice? prepare to be wowed. IFLScience. https://www.iflscience.com/have-you-ever-seen-candle-ice-prepare-to-be-wowed-75142
What makes the Canadian rockiesâ Lakes So Blue and unique? Discover Canada Tours. (2024, November 28). https://www.discovercanadatours.com/blog/what-makes-the-canadian-rockies-lakes-so-blue-and-unique/#:~:text=As%20glacial%20meltwater%20carries%20sediments,exibiting%20breathtaking%20shades%20of%20blue.