How Freshwater Resources Are Affected

Wherever it appears and whatever its form, every drop of the world's water is locked into the hydrological cycle. However, the speed of movement of water through different phases of the hydrological cycle varies considerably. The average time a drop of water stays in the atmosphere is about eight days and in a river about 16 days. But this time can run into centuries for a glacier and tens of thousands of years for water moving sluggishly through a deep aquifer. Though Water drops are continuously recycled, freshwater available in form of lakes and river storage (which is about 0.3% of all freshwater resources) are renewable.

Human actions modify the hydrological cycle and can seriously pollute available freshwater. Climate change also affects the hydrological cycle significantly thereby affecting freshwater production and its distribution. With the population growth, urbanization and ever increasing demand on the finite amount of water for different uses like drinking water, industry, agriculture, hydropower and, increased pressure are mounting on our freshwater resources.

Importance and Need of Freshwater

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