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Geography Optional 300+ Score Pack · Model answer

Describe the flood-prone areas and their management problems in the Ganga Plains.

  • UPSC 2016
  • Contemporary Issues

The Ghaghara, Gandak, Burhi Gandak, Bagmati, Kamala, Kosi and Mahananda rise in young, fast-eroding Nepal Himalayan catchments and debouch onto a surface of almost no gradient, so they shed their load where they slow, aggrade their beds and spill sideways instead of cutting down.

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What the full answer covers

  • The flood-prone tracts: a plain of two unequal halves
  • North-bank tracts — the sediment side
  • South-bank tracts — the flashy side
  • Why management is so difficult here

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