World’s water facts

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1. Water covers about 70% of the Earth’s surface.

2. The oceans hold about 96.5% of all Earth’s water.

3. 68.9% of the Earth’s fresh water exists in the form of glaciers and permanent snow cover.

4. About 30.8% of the world’s total freshwater supply is groundwater (this includes soil moisture, swamp water and permafrost)

5. lakes and rivers occupy about 0.3% of the total global fresh water.

6. The volume of all water on Earth would be about 1,386 million cubic kilometers (km3)…A cubic kilometer of water equals about 264 billion gallons.

7. The most freshwater on Earth is stored in the ground.

8. More than 2,000,000 m3 (8,400,000 km3) of freshwater is stored in the Earth, most within one-half mile of the surface.

9. But, if you really want to find freshwater, the most is stored in the 7,000,000 mi3 (29,200,000 km3) of water found in glaciers and icecaps, mainly in the polar regions and in Greenland.

10. Almost two billion people were affected by natural disasters in the last decade of the 20th century, 86% of them by floods and droughts.

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