How Much Water is on Earth

How Much Water is on Earth, by Volume

Volume of Earth: 260 Billion Cubic Miles
Volume of All Water: 337 Million Cubic Miles
Water volume as percentage of Earth: About 1/8th of 1%

Water on Earth by Diameter of Sphere

Earth 7,918 Miles
All Earth’s water 860 Miles
All Earth’s liquid fresh water 170 miles
All Earth’s water in lakes and rivers 35 miles

How can this be?

Proportionally, Earth’s oceans are like thin onion skins of water, covering about 70% of the Earth’s surface.

Maximum Depth of Oceans = 7 Miles
(about 1/10th of 1% of Earth’s Diameter)

Average Depth of Oceans = 2.4 Miles
(about 1/30th of 1% of Earth’s Diameter)

Average Depth of Great Lakes = 300 Feet
(about 1/1000th of 1% of Earth’s Diameter)

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