A Perspective on Rishiganga-Dhauliganga Flash Flood in the Nanda Devi Biosphere Reserve, Garhwal Himalaya, India

A ground-based and heliborne survey was conducted immediately after the disaster that took place on 7 th February, 2021 in the Chamoli district of Uttarakhand. Based on these observations and freely available Google Earth imagery, we have arrived at plausible causes of this catastrophe as detachment...

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Bibliographic Details
Published in:Journal of the Geological Society of India 2021-04, Vol.97 (4), p.335-338
Main Authors: Sain, Kalachand, Kumar, Amit, Mehta, Manish, Verma, Akshaya, Tiwari, Sameer K., Garg, Purushottam K., Kumar, Vinit, Rai, Santosh K., Srivastava, Pradeep, Sen, Koushik
Format: Article
Language:English
Subjects:
Biosphere
Bridges
Catchment area
Earth and Environmental Science
Earth Sciences
Flash flooding
Flash floods
Geology
Glaciers
Hydroelectric power
Hydrogeology
Imagery
Surveying
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Summary:A ground-based and heliborne survey was conducted immediately after the disaster that took place on 7 th February, 2021 in the Chamoli district of Uttarakhand. Based on these observations and freely available Google Earth imagery, we have arrived at plausible causes of this catastrophe as detachment of a sizeable rock mass and overlying hanging glacier in the Raunthi catchment that dammed the Rishiganga River and led to the devastation of roads, bridges and hydropower projects in downstream.
ISSN:0016-7622
0974-6889
DOI:10.1007/s12594-021-1691-5