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River Interlinking

Cauvery Basin May Face Water Decline Till 2050 

Why in the News

A study by IIT Gandhinagar published in Earth’s Future journal warns that the Cauvery river basin may face a decline in water availability until 2050, unlike most other Indian rivers expected to see increased flows due to climate change.

Key Findings of the Study

Decline in Cauvery Water

  • 3.5 percent decline in Cauvery water expected
  • Time period: 2026 to 2050
  • Minimal increase expected after 2051

Historical Decline

  • Cauvery streamflow declined 28 percent between 1951 and 2012
  • Based on data from Kollegal monitoring station

Contrast with Other Rivers

  • Most major Indian rivers expected to see increase in flow
  • Projected increases
    • Indus: 25 percent increase
    • Ganga: 8 percent increase
    • Krishna: 16 percent increase
  • Cauvery stands as exception
[2020] Which of the following Protected Areas are located in Cauvery basin? 
1 Nagarhole National Park 
2 Papikonda National Park 
3 Sathyamangalam Tiger Reserve 
4 Wayanad Wildlife Sanctuary 
Select the correct answer using the code given below: 
(a) 1 and 2 only (b) 3 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4

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