Nepal flash floods wash away illusions of clean, easy hydropower
Devastating flash floods in Nepal on August 26 caused extensive damage to numerous hydroelectric power projects and other infrastructure, killing over a thousand people. The event underscores the urgent need to rethink hydropower development in the Hindu Kush Himalaya, as climate change exacerbates risks like high sediment loads that current infrastructure struggles to manage. Experts call for a focus on sediment management alongside water flow.
Why it matters
This event highlights the critical intersection of climate change, infrastructure development, and disaster preparedness in vulnerable regions, impacting energy security, human lives, and economic stability. It calls into question current development strategies in ecologically sensitive areas.
The wake of the August 26 flash floods in Nepal, which devastated several towns and villages, killed more than a thousand people, and left several more unaccounted for, follows a familiar pattern that emerged after the Chamoli floods, the South Lhonak Lake disaster, and the Thame floods: a call to rethink development in the region in light of risks exacerbated by climate change.
At the centre of this narrative sits hydroelectric power, whose infrastructure has received the region’s most attention and investment.
Estimates have revealed that the latest catastrophe extensively damaged at least 13 hydroelectric power projects along the Bhotekoshi and Trishuli river corridors and one solar power plant. According to the United Nations Development Programme, about 15 power projects with a planned capacity of 470 MW that were under construction were also damaged.
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