It was shocking to read the BBC report on a NASA gravity satellite findingthat many parts of North India like Punjab, Harayana and Delhi have lost their groundwater at an alarming rate in the past 6 years. We are losing water @ 4cm per year.
Till now 109 cubic kilometres of water, roughly equivalent to Americas Lake Mead and double the capacity of India's largest reservoir has vanished. These results are more alarmin than the findings three years ago by Grace scientists about loss of water in parts of Africa.
Water is an important factor in maintainin India pace of growth. If water harvesting is not made a national priority the day is not far when India will face internal strife on account of scarce water and inadequate food production.
Note: The Grace (Gravity Recovery And Climate Experiment) mission of NASA uses two satellites flying along the same orbit, one just in front of the other. Minute differences in the Earth's gravitational pull cause the two craft to shift slightly in their positions relative to one another. The mission can measure groundwater depletion because the amount of water in aquifers has a small gravitational attraction for the satellites. (Source BBC Report)

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