Why in News :
Flooding of Brahmaputra river in Assam (2017).
- Official death to 11 -77
- Around 12 lakh people have been displaced.
- 20 districts, over 2053 villages and around one lakh hectares of agriculture land have been in undated.
- The vast stretch of alluvial plains from Maharajganj in eastern UP to Karmganj in Assam’s Barak Valley is a densely populated area stretching across UP, Bihar, W.B and Assam.
- These four states account for 17% of India’s geographical area but disproportionately accounts for 43% – 52 % of all Flood – prone areas of the country.
Natural Causes :
- High precipitation in the eastern Himalayas.
- Steep slope (River catchment area)
- Large Volume of water gushing down river channels from the eastern Himalayas into the flood plain.
- This water exceeds the carrying capacity of the river channels.
Man Made Causes:
- High population density
- Embankment have been the gold standard for flood protection.
- Large population continue to stay inside the embankment.
- Constructing Dams
- Dredging of rivers
- Porcupine structure to combat erosion ex : Bambaoo porcupines
Way Forward :
- Focus must shift from flood protection to flood governance.
- Strengthening the moribund Brahmaputra board in Assam, and shafting it with scientist.
- It must be tackled by a combination of structural intervention, institutional reforms and comprehensive initiatives to build resilience in the riverine population.
Source: Economic & Political Weekly
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