Do alpine lakes freeze solid?

Every winter in the high backcountry of the Sierra Nevada, alpine lakes begin to freeze over with a thin layer of ice that slowly grows thicker as the temperature continues to plummet. Over time, snow piles on top, hiding any signs of the lakes until well into spring or even summer.



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The water may be frozen — and please do not go out on the ice — but the expanse generates a snow-globe-like experience. The wet and sometimes icy weather does typically require a 4-wheel or all-wheel drive vehicle to navigate the Alpine Lake roads but nothing compares to a snowy-silent night.

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Most lakes and ponds don't completely freeze because the ice (and eventually snow) on the surface acts to insulate the water below. Our winters aren't long or cold enough to completely freeze most local water bodies. This process of lakes turning over is crtically important to the life in the lake.

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The Issyk-Kul lake in northern Kyrgyzstan froze over due to extreme cold temperatures on Saturday. Issyk-Kul means “warm lake” in Kyrgyz. The name was given because the water never freezes due to the lake's depth and natural warmth of water.

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Great Lakes that have completely frozen include Lake Superior, Lake Huron, Lake Erie, and Lake Ontario. Lake Michigan is the only Great Lake to have never frozen entirely.

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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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And shockingly the water doesn't have to be THAT cold to experience symptoms. So next time you wanna dive into that deep alpine lake water, think twice. Either wear a life-vest (they make compact blow up life vests now, so they're easy to pack). Or wade in from the beach.

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These are bodies of water located at altitudes of 10,000 feet or more above sea level—and many require traveling to the world's most remote destinations like the Himalayas and the Andes Mountains to see them.

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Lakes don't freeze all the way to the bottom. Any body of water that freezes all the way to the bottom is called a “puddle” and they typically don't have fish in them. Even in a place that is really, really, REALLY COLD, a lake is only going to have ice on it that is about 2ft to 3ft thick.

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Therefore, below freezing temperatures are needed for a week or more to form ice on a large lake. As I have mentioned before, water is a unique substance in that the solid form (ice) is lighter than the liquid form (water).

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Do fish die in frozen lakes or in lakes that are partially frozen? Since fish are cold-blooded animals, they can survive because they are able to regulate their body temperature to match their environment. However, they could die if a body of water freezes over completely and remains frozen for an extended period.

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In water that is around the freezing point, a person is likely to survive only 15 to 45 minutes with flotation and possibly up to an hour or so with flotation and protective gear before the brain and heart stop (Table 1). The surface temperature of Lake Superior in early to mid-summer is about 40 to 50 F.

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While there have been past “sightings,” most have turned out to be pranks or misidentifications. The reality is that the largest of the Great Lakes (Lake Superior and Michigan) are extremely deep lakes that are too cold for sharks.

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