Present Environmental Scenario of the River Systems of North Bengal – A Review
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,IN
Gautam Kumar Das
DOI:
https://doi.org/10.24906/isc/2023/v37/i3/223658Keywords:
River Systems, River Commons, Water Quality Indices, Changing River Courses, Canals and Barrages.Abstract
The Brahmaputra basin and the Ganga basin of North Bengal consist of many rivers and most of them originate from the hilly regions of Sikkim, Bhutan, Tibet, and Darjeeling. The Himalayan mountainous region in the state of West Bengal has an annual rainfall of 3000 to 6000 mm. These heavy rainfalls lead to landslides in hilly areas and severe floods in plains, mainly in North Bengal. Sewage discharged from municipalities in these basin areas enters the river water making it unusable even for outdoor bathing. For this reason, Paharpur to Siliguri is the polluted stretch of Teesta in 2018 and along Sevoke during 2022 in the category of Priority-V as demarcated by the Central Pollution Control Board.
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