1. Home
  2. Blog
  3. UPSC

Cauvery Basin: Decline in Green Cover

Why is it in the news?

  • Researchers at the Indian Institute of Science (IISc), Bengaluru, conducted a study on the natural vegetation cover in the Cauvery basin.
  • The study reveals a significant loss of green cover in the Cauvery basin over the past five decades.

Key Findings of the Study

  • Over 12,850 sq.km of natural vegetation in the Cauvery basin lost between 1965 and 2016.
  • Karnataka: Accounted for one-third of the lost natural vegetation.
  • Tamil Nadu: Contributed to one-fifth of the lost cover.
  • 46% decrease in natural vegetation observed.
  • Dense vegetation cover reduced by 35%.
  • Degraded vegetation experienced a significant decline of 63%.
  • Protected areas such as Brahmagiri Wildlife Sanctuary, Bandipur National Park, Nagarhole National Park, and Cauvery Wildlife Sanctuary were notably affected.
  • Bannerghatta National Park witnessed a decrease in its moist deciduous forest area from 50% in 1973 to 28.5% in 2015 due to human activities impacting the park and its surroundings.


Location of Cauvery River

  • Origin: Talakaveri on the Brahmagiri range near Cherangala village of Kodagu district, Karnataka.
  • Drains into Bay of Bengal at Poompuhar, Tamil Nadu.
  • States Covered: Tamil Nadu, Karnataka, Kerala, and the Union Territory of Puducherry.
  • Important Tributaries: Left Bank: Harangi, Hemavati, Shimsha, and Arkavati; and Right Bank: Lakshmantirtha, Kabbani, Suvarnavati, Bhavani, Noyil, and Amaravati.
  • Major Projects: Krishnaraja Sagar dam, Nugu, Mettur, and Grand Anicut projects.
  • Protected Areas along Cauvery Basin: Brahmagiri Wildlife Sanctuary; Bandipur National Park; Nagarhole National Park; Bannerghatta National Park; and Cauvery Wildlife Sanctuary.

Get free UPSC Updates straight to your inbox!

Get Updates on New Notification about APPSC, TSPSC and UPSC

Get Current Affairs Updates Directly into your Inbox

Discover more from AMIGOS IAS

Subscribe now to keep reading and get access to the full archive.

Continue reading