How much water water present on earth?

lThe storehouses for the vast majority of all water on Earth are the oceans. It is estimated that of the 332,500,000 cubic miles of the world's water supply, about 95% is stored in oceans.

lLess than 3% of the world's water is fresh - the rest is seawater and undrinkable.

l• Of this 3% over 2.5% is frozen, locked up in Antarctica, the Arctic and glaciers, and not available to man.

l• Thus humanity must rely on this 0.5% for all of man's and ecosystem's fresh water needs.

l10,000,000 km3 stored in underground aquifiers.

l119,000 km3 net of rainfall falling on land after accounting for evaporation.

l91,000 km3 in natural lakes.

lOver 5,000 km3 in man made storage facilities - reservoirs.

l2,120 km3 in rivers - constantly replaced from rainfall and melting snow and ice.