A Perspective on Rishiganga-Dhauliganga Flash Flood in the Nanda Devi Biosphere Reserve, Garhwal Himalaya, India
Kalachand Sain, Amit Kumar, Manish Mehta, Akshaya Verma, Sameer K. Tiwari, Purushottam Kumar Garg, Vinit Kumar, Santosh K. Rai, Pradeep Srivastava, Koushik Sen
Abstract
Abstract A ground-based and heliborne survey was conducted immediately after the disaster that took place on 7th 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.
Topics & Concepts
BiosphereGeologyFlash floodFlood mythPerspective (graphical)Nature reserveArchaeologyGeographyEcologyArtificial intelligenceComputer scienceBiologyCryospheric studies and observationsFlood Risk Assessment and ManagementLandslides and related hazards