Ganga River Drying at Unprecedented Rate

• The Ganga river, vital to South Asia’s economy and culture, is drying at a rate unprecedented in over a millennium.

• Researchers from IIT Gandhinagar and the University of Arizona conducted a study to reconstruct the river’s streamflow.

• The decline in flow since the 1990s could be unprecedented, linked to weaker summer monsoons, human-driven changes in land and water use, and broader climate shifts.

• The study found that between 1991 and 2020, the basin experienced multiple four- to seven-year droughts, rarer than in the previous millennium.

• The 2004-2010 drought was the most severe in 1,300 years, and the post-1990s drying was estimated to be 76% more intense than the worst 16th century drought.

• The findings question the reliability of current global climate models, highlighting the need for adaptive water management that accounts for both natural and human drivers.

Unprecedented river decline is important topic for Civil service exam (WBCS).

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