Groundwater, Not Glacial Melt, Feeds the Ganga During Summer: IIT Roorkee Study
IIT-Roorkee's study reveals that groundwater, not glacial melt, primarily sustains the Ganga during summer. A full-scale isotopic analysis indicates groundwater discharge boosts the river's volume, challenging prior beliefs. The research offers insights for sustainable river rejuvenation strategies in India, emphasizing aquifer protection and water resource management.
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- India
Researchers at IIT-Roorkee have unveiled a groundbreaking study showing that the Ganga River is predominantly sustained by groundwater discharge during the hot, dry summer months, contradicting the long-held belief that glacial melt is the primary contributor.
Published in the journal Hydrological Processes, this study employs a comprehensive isotopic analysis from the Ganga's Himalayan origins to its deltaic end to underscore the role of groundwater. The findings reveal a significant natural underground contribution that increases the river's volume by nearly 120% along the middle stretch.
Professor Abhayanand Singh Maurya and Director K K Pant from IIT-Roorkee argue that this research can lead to effective strategies for rejuvenating not just the Ganga but other major Indian rivers, making a case for protecting and recharging aquifers while reviving lost tributary networks.
(With inputs from agencies.)
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