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Gangotri glacier
September 5 , 2025
16 hrs 0 min
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- Gangotri glacier shows earlier snowmelt due to climate change, altering the water cycle in the Bhagirathi River basin.
- The Gangotri glacier system (GGS) is the source of the upper Ganga basin feeding the Bhagirathi River in the central Himalayas.
- A recent study analysed the long-term discharge flow of the GGS from 1980 to 2020.
- Snow melt contributes 64 percent of the discharge, glacier melt 21 percent, rainfall-runoff 11 percent, and base flow 4 percent.
- Since 1990, the peak discharge has shifted earlier from August to July due to decreased winter precipitation and increased early summer melting.
- Snow melt declined due to decreasing snow cover area, despite warming trends.
- Rainfall-runoff and base flow showed increasing trends from 1980 to 2020.
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