Lake Baikal contains about 20 percent of the planet's liquid fresh water.
Why it is true
Lake Baikal, in Siberia, is the deepest lake in the world, at 1,642 metres. It contains about 23,000 cubic kilometres of fresh water, more than all the Great Lakes of North America combined, which represents about 20 percent of the planet's liquid fresh water.
Source: USGS
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