Understanding Glacial Lake Outburst Floods (GLOFs) and Their Growing Risks
Understanding Glacial Lake Outburst Floods (GLOFs) and Their Growing Risks
IN · Published Oct 30, 2026
• Glacial Lake Outburst Floods (GLOFs) are sudden and catastrophic floods caused by the failure of moraine dams holding glacial lakes.
• These events are becoming increasingly common in the Himalayas due to climate change, which is causing glaciers to melt and glacial lakes to expand.

Impact & Risks

GLOFs pose severe risks to downstream communities, infrastructure, and ecosystems. They can destroy villages, roads, bridges, and hydropower projects, as seen in the Kedarnath catastrophe and the Teesta III dam failure in Sikkim. These floods often occur with little warning, making them particularly dangerous. The increasing frequency of GLOFs due to climate change exacerbates the vulnerability of Himalayan regions, where thousands of lives and critical infrastructure are at risk. The combination of natural and human-induced factors heightens the potential for future disasters.

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