Wolfram Alpha says the total fresh water on Earth would have a radius of 203 km. The Great Lakes alone would have a radius of 18 km. https://www.wolframalpha.c

Wolfram Alpha says the total fresh water on Earth would have a radius of 203 km. The Great Lakes alone would have a radius of 18 km. https://www.wolframalpha.com/input?i=volume+of+fresh+water+on+earth https://www.wolframalpha.com/input?i=volume+of+fresh+water+o... https://www.wolframalpha.com/input?i=volume+of+great+lakes https://www.wolframalpha.com/input?i=volume+of+great+lakes