Water Management – Institutional Reforms, Conservation Efforts, etc.

Decoding post-Flood Landslides in Kerala

Note4Students

From UPSC perspective, the following things are important :

Prelims level : Various terms mentioned in the news

Mains level : Effective post flood management

Context

  • Almost 60 people are feared dead, buried alive under layers of mud and rocks in the Kavalappara landslide.
  • It is the worst tragedy in Kerala’s devastating monsoon so far this year.

What causes landslides?

  • Destabilizing geological processes, coupled with extreme rainfall events and unscientific farming and construction activities, pose a serious threat to human habitation in the highlands of Kerala.
  • A team of scientists from the National Centre for Earth Science Studies (NCESS) had found that land subsidence, lateral spread, and soil piping were an immediate threat to life and property in the uplands.

 

Need for stabilization measures

  • Lateral spreading, subsidence, and crack development are quite unusual phenomena and the sites need immediate rehabilitation.
  • Most of the slopes were used for raising crops and farmers had blocked the natural drainage systems.
  • Any developmental activity like construction of roads and buildings in such vulnerable areas requires remedial measures for slope stabilization.
  • Based on the recommendations of the NCESS, the Union Ministry of Earth Sciences (MoES) has initiated steps to establish a network of landslip monitoring stations in the highlands.
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