Landslide and Flood in India

February 8th, 2021

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Part of the Nanda Devi glacier broke off in Uttarakhand's Chamoli district on February 7th, 2021, triggering an avalanche that struck the Rishiganga Hydroelectric Dam. The collision at the dam and influx of water caused a surge of floodwater along the Dhauliganga river.

Dozens of villages along the river have been evacuated, and rescue operations are underway to free people trapped at the dam or elsewhere in the flood's path, but more than a hundred people have been confirmed lost with their current status unknown. Rescue efforts are ongoing.

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Comparison of PlanetScope imagery from February 6th and February 7th, 2021, showing the high rock face where a slab of rock and ice broke away, and the debris filled valley below. Airborne dust from the rockslide was visible when the February 7 image was collected at roughly 11:00 a.m. India Standard Time. (These images have been rotated 90˚ clockwise, north is to the right.)