A new study led by Professor Chengshan Wang of the China University of Geosciences has found that rivers originating from the Himalayas are rapidly altering their courses as a result of glacier melt and global warming. The research, published on May 14 in the journal Science, analyzed satellite images from 1980 to 2020 and conducted field observations across several river basins. The findings indicate that warming and glacial retreat are significantly affecting the flow patterns of major Himalayan rivers.

The study examined 1,582 kilometers of river channels and 1,079 river bends, revealing that between 1980 and 2020, the courses of Himalayan rivers changed 33 percent more than before, with unconfined bends showing up to 97 percent change. Researchers observed both cut-offs and avulsions, where rivers abandoned old paths for shorter or entirely new routes. The analysis also found that the rate of temperature increase in the Himalayas was double the global average, intensifying glacier melt and weakening frozen ground along riverbanks.

According to the study, these shifts could heighten the risks of flooding and erosion across the region, affecting millions who depend on these rivers for sustenance and livelihoods.