Cauvery River May Face Reduced Flow Till 2050 Due to Climate Change

Context: Cauvery River

Study (IIT Gandhinagar) shows Cauvery basin may face lower river flows till 2050, despite overall increase in rainfall due to climate change.

Key Points

Cauvery is a rain-fed peninsular river, so increased rainfall does not automatically increase flow → much of the water is lost as evaporation, runoff or used in the basin itself → past data already shows ~28% decline, and future may see ~3.5% more decline → unlike Himalayan rivers, Cauvery lacks glacier support → hence overall usable flow reduces.

Cauvery River

Origin → Talakaveri (Brahmagiri Hills, Western Ghats, Kodagu, Karnataka) → flows to Bay of Bengal

Tributaries → Kabini, Bhavani, Amaravati, Hemavati

Core Issue

Already a Karnataka–Tamil Nadu dispute river → declining flow will increase conflict and water stress

Cauvery River
Cauvery River
PYQ – 2020, Ans – C

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