Cloudbursts Strike over Foothills Himalaya of Uttarakhand, India: A Case Study from Maldeota, Dehradun District

Abstract

The present study highlights the cloudburst issues that occurred in Raipur area of Dehradun City. On the night of August 20, 2022, the Raipur area of Uttarakhand state capital Dehradun was lashed by excessive rainfall or cloudbursts resulting in the water level of sub-watersheds of the Song River rising enormously, particularly Bandal Nadi and Song river. Bhaiswar and Sarkhet villages came in limelight which are situated on the Bandal valley due to loss of human lives and property. 5 people were killed while 3 people were injured and 24 animals lost whereas about 8.25 ha of agricultural fields were damaged and 12 families became homeless in these incidences. The transport connectivity of the Sarkhet and adjoining areas was disrupted due to washing off the road in several places. A detailed investigation was carried out in the affected areas to ascertain the causes and impacts of the disaster and the feasibility of rehabilitation land. Geologically, the devastated area is observed to be fragile due to its proximity to Main Boundary Thrust (MBT) and subsequent Fault as also lies to the Eastern fringe of the Mussoorie Syncline. It was also observed that untraditionally ways of habitation patterns in the region and economic opportunities due to increasing tourist inflow in the area are responsible for the enhanced devastating potential of disaster. This work mainly concentrates on future risk and suggestions for future risk mitigation within the area.

Keywords

• Debris flows
• Flash food
• Impacts
• Lesser Himalaya
• Risk Mitigation

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