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Little Crater Lake

little crater lake oregon

The lake is oligotrophic, meaning that there is nothing living in that lake. Combine that with water being blue in large volumes like this (yes, water is actually the color blue) and you have yourself an unpolluted, crystal-clear blue lake with visibility straight to the bottom in most cases. Whenever a lake doesn't look like this, it's probably due to it being able to host life, also known as an "eutrophic" lake.

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