Skip to content
- The South Lhonak Lake in Sikkim experienced a breach, leading to severe flooding in
downstream areas. This caused casualties and displacements in the state.
- Glacial lakes are large bodies of water formed in front of, on top of, or beneath melting
- They can become increasingly dangerous as they expand, often dammed by unstable ice
or sediment composed of loose rock and debris.
- Rising global temperatures have led to rapid glacier melting in the Sikkim Himalayas,
resulting in the formation and expansion of glacier lakes.
- Sikkim Himalayas currently host more than 300 glacial lakes, with 10 identified as
vulnerable to outburst floods.
- South Lhonak Lake’s size has significantly increased over the past five decades, rendering
it susceptible to GLOF events.
- Earthquakes, such as a magnitude 4.9 quake in 1991 and a magnitude 6.9 event in 2011,
have raised concerns about the potential triggering of GLOFs in the region