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VOL. I · EST. 11.2025 
SatyaDheesh
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India's Ground Truth Record
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Flash floods in Arunachal Pradesh wash away 84-metre bridge, cut off eight villages

GS1History · Society · Geography· Geophysical phenomena (earthquakes, cyclones, volcanoes)· Prelims·

Why in news

Flash floods and landslides in Arunachal Pradesh caused significant infrastructure damage and isolated villages, highlighting the vulnerability of Himalayan regions to extreme weather.

Background

Flash floods and landslides in Arunachal Pradesh affected 97,182 people across 425 villages. The disaster destroyed an 84-metre bridge over the Kumey river and blocked surface transport to Mechuka near the China border.

Facts for Prelims

  • PlaceMechuka: A region in Arunachal Pradesh located near the border with China.
  • BodyITBP: Indo-Tibetan Border Police, a central armed police force responsible for border guarding.
  • FactThe Kumey river is a significant river in the state of Arunachal Pradesh.
  • FactThe disaster resulted in 7 fatalities and 29 injuries across the affected villages.

For Mains

Q. Discuss the geographical and climatic factors contributing to increasing frequency of flash floods in the Himalayan region and suggest measures for disaster-resilient infrastructure.

Dimensions to cover in your answer

  • Geological vulnerability: High seismic activity and fragile lithology in the Eastern Himalayas increasing landslide frequency.
  • Infrastructure bottleneck: Lack of all-weather connectivity in border regions like Mechuka hindering rapid emergency response.
  • Climate-induced risk: Intensified monsoon patterns leading to sudden discharge of Himalayan rivers like the Kumey.

Keywords: Flash floods · Himalayan fragility · Disaster-resilient infrastructure · Border connectivity · Geological hazards

Read the full news →Report a mistake in this noteSource: NDTV ↗Also: GS3 · Natural disasters & responseAlso: GS3 · Border management

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