Q15.How will the melting of Himalayan glaciers have a far- reaching impact on the water resources of India?

The Himalayan glaciers, often termed the "Third Pole," are vital freshwater reservoirs, feeding major perennial rivers like the Ganga, Brahmaputra, and Indus, which sustain over a billion people in India. Their melting has profound implications for the nation's water security.

Short-term Impacts

• Accelerated melting initially increases river discharge, raising flood risks in downstream regions, damaging infrastructure and displacing populations.

Long-term Impacts

• Sustained reduction in glacier volume will drastically decrease perennial river flows, leading to severe water scarcity across the Indo-Gangetic plains.

Sectoral Implications

• Agriculture: Reduced irrigation water will severely impact agricultural productivity, threatening food security and rural livelihoods.
• Hydropower: Decreased water availability will compromise hydropower generation, affecting India's energy security and economic development.
• Drinking Water: Millions dependent on these rivers for potable water will face acute shortages, exacerbating public health challenges.
• Ecosystems: Altered river regimes will disrupt aquatic ecosystems and biodiversity.

The melting of Himalayan glaciers poses an existential threat to India's water resources, necessitating urgent adaptation strategies, sustainable water management, and global climate action to mitigate these far-reaching impacts.