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why are rivers important for the country's economy?
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?why are rivers important for the country's economy?
1] A lake helps to regulate the flow of a river
2] During heavy rains it prevents flooding and during dry season it maintains the flow of water
3] It can be used for hydel power
4] They enhance beauty 
5] It can be used for navigation and irrigation
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Read the following passage and answer the question that follows.Clean and Adequate WaterLife cannot be imagined without water, but clean and adequate water is still not accessible to most of the people in India. India receives 90 percent of the water from major or medium rivers. It has 14 major rivers each having catchment area of 20,000 sq. km and above; while there are 44 medium rivers with a coastline between 2000-20,000 sq. kms. Then there are 53 small rivers each with catchment area of 2000 sq. kms.According to the 2011 census, annual per capita water availability in the country decreased to 1545 cubic meters from 1816 cubic meters as per the 2001 census. At present, this situation is even more worrisome. Scientists believe that by 2050 there will be a 30 percent decrease in the availability of water per person. The World Health Organization (WHO) recommends the availability of 200 litres of water per person per day in urban areas. On the contrary, 140 litres of water is supplied per person per day in the country.Water resources in India are predominantly dependent on the monsoon. India receives an average rainfall of 4000 BCM (Billion Cubic Meter) every year from the rain, but most of it is vapourized and goes down the drains. Statistics show that a dearth of storage procedure, lack of adequate infrastructure, inappropriate water management have created a situation where only 18-20% of the water is actually used. The remainder just gets wasted, aggravating the problem of ground water depletion.Our country’s economy primarily rests on agriculture. Agriculture contributes 40 percent to the GDP of the country, and accounts for 60 percent of the total export revenues. Also, 60 percent of the related work. One of the major reasons for water crisis in the country is that as the area of irrigated land has increased, the level of groundwater has declined.Currently, India has a gross irrigated crop area of 82.6 million hectares (215.6 million acres), which is the largest in the world. As the population increases, the water storage capacity of ponds decreases. In fact, wells and ponds go dry after the water decreases at the ground level.Q.What aggravates the problem of ground water depletion?

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?why are rivers important for the country's economy?
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