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The total volume of readily available global groundwater is about 4.2 x 106 km3

Groundwater makes up about twenty percent of the world's fresh water supply, which is about 0.61% of the entire world's water, including oceans and permanent ice.

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14y ago
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5mo ago

It is estimated that there is about 22.6 million cubic kilometers of water stored in the Earth's groundwater reservoirs.

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Q: A How many cubic kilometers of water reside within groundwater?
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