Water Resource and Type of Irrigation

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Fresh water is more useful because it can be used for drinking, agriculture, industries, and domestic needs. About 71 per cent of the earth's surface is covered with oceanic water, but fresh water con…

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India occupies only 2.45 per cent of the world's surface area and is home to about 17.4 per cent of the world's population. Yet it has only 4 per cent of the world's water resources. This shows a very…

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Utilizable water availability in India is 1137 BCM. It includes 690 BCM of surface water and 447 BCM of replenishable groundwater. In formula form: 1137 BCM = 690 BCM (surface water) + 447 BCM (replen…

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Surface water is water available on the earth's surface in rivers, lakes, tanks, ponds, and other water bodies. Rivers are the most important source of surface water in India. Examples include rivers,…

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The Indus, Ganga, and Brahmaputra are major rivers of North India and together carry nearly 60 per cent of India's total surface water. They are among the most important river systems for water supply…

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The Brahmaputra is the world's eighth largest river, and the Ganga is the world's tenth largest river. This ranking is an important fact for comparison of major river systems.

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Only about 690 BCM of the available surface water can be utilised, which is about 32 per cent of the available surface water. This is limited by topographical, hydrological, and other constraints.

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The effective storage capacity increased from 18 BCM at the time of independence to 147 BCM at present. This shows a major expansion in water storage through reservoirs and related projects.