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प्रश्न
In the Brahmaputra river basin, floods are almost an annual feature. Give two reasons to explain why.
टिप्पणी लिखिए
उत्तर
The cause of floods in this river basin is heavy rainfall of around 250 cms at the time of the rainy season. Besides, due to the formation of silt by the river Brahmaputra along with its tributaries, the water cannot pass through and thus floods take place. Along with this, due to earthquakes, the water level varies and due to this hindrance in the level of water inundation takes in a lot of areas. Also, landslides occur frequently and the big rock mass which falls creates a temporary dam. The adjoining areas are covered underwater and in course of time, it vents due to water pressure resulting in a lot of areas getting flooded.
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