Global Water resources Total amount of water at the Earth's surface:1408.7X 106 km3 unevenly distribution of fresh water in the world. China with 21%of world's population has only 7%of the water resources. ● However,Canada,with only 0.5%of the world population,has 20% of world's fresh water. The world's fresh water supply is continuously collected,purified, recycled,and distributed in the solar powered hydraulic cycle. • Total amount of water at the Earth’s surface: 1408.7×106 km3 • unevenly distribution of fresh water in the world. • China with 21% of world’s population has only 7% of the water resources. • However, Canada, with only 0.5% of the world population, has 20% of world’s fresh water. • The world’s fresh water supply is continuously collected, purified, recycled, and distributed in the solar powered hydraulic cycle. Global Water Resources