Question

Why is the co-efficient of variation of annual rainfall low on the west coast of India and high in Kachchh and Gujarat?

Answer 1

1. Low CV on West Coast (e.g., Kerala, Konkan):
   • The West Coast is on the windward side of the Western Ghats.
   • The Southwest Monsoon winds bring steady and heavy rain every year.
   • Rainfall is regular, so CV is low.
2. High CV in Kachchh and Gujarat:
   • These areas are in the rain-shadow region of the Western Ghats.
   • They get less and uneven rainfall.
   • Sometimes they get rain, sometimes none → CV is high.