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Junior science refresher
Buy and subsribe here Junior science refresher published this article page no 13 there are four major sources of surface water. these are rivers lakes ponds and tanks. in the country there are about 10360 rivers and their tributaries longer than 1.6 km each. the mean annual flow in all the river basins in india is estimated to be 1869 cubic km junior science refresher magazine subscription. Junior science refresher Buy and subsribe here Junior science refresher published this article page no 14 however due to topographical hydrological and other constraints only about 690 cubic km 32 per cent of the available surface water can be utilised. water flow in a river depends on size of its catchment area or river basin and rainfall within its catchment area. you have studied in your class xi textbook india physical environment that precipitation in india has very high spatial variation and it is mainly concentrated in monsoon season. you also have studied in the textbook that some of the rivers ... Junior science refresher Buy and subsribe here Junior science refresher published this article page no 15 given that precipitation is relatively high in the catchment areas of the ganga the brahmaputra and the barak rivers these rivers although account for only about one-third of the total area in the country have 60 per cent of the total surface water resources. much of the annual water flow in south indian rivers like the godavari the krishna and the kaveri has been harnessed but it is yet to be done in the brahmaputra and the ganga basins j<... Meri saheli magazine Meri saheli magazine published this aticle page no 16 the total replenishable groundwater resources in the country are about 432 cubic km. shows that the ganga and the brahamaputra basins have about 46 per cent of the total replenishable groundwater resources. the level of groundwater utilisation is relatively high in the river basins lying in north-western region and parts of south india. the groundwater utilisation is very high in the states of punjab haryana rajasthan and tamil nadu. however the... Meri saheli magazine Meri saheli magazine published this aticle page no 17 india has a vast coastline and the coast is very indented in some states. due to this a number of lagoons and lakes have formed. the states like kerala odisha and west bengal have vast surface water resources in these lagoons and lakes. although water is generally brackish in these water-bodies it is used for fishing and irrigating certain varieties of paddy crops coconut etc. water demand and utilisation india has traditionally been an agrarian...