ISRO/NRSC used Cartosat-2S data to assess the devastating 5th August Flash Floods in Dharali & Harsil, Uttarakhand. Source: x/ISRO
The National Center for the Indian Space Research Organization (ISRA) has made a “rapid assessment” of damage caused by lightning floods in Uttarkashi district in Uttarakhand using high-resolution images from the Cartosat-2 satellite.
“Comparative analysis of satellite images 07.08.2025 (after the event) and available data before the event without the cloud (13.06.2024) revealed the scope and severity of destruction,” said ISRA.
The agency stated that findings include hints of lightning floods, with extended jet channels, changed morphology of the river and damage to human lives and infrastructure.
“Inserting sediment and valve -shaped fragments in the village of Dharali … at the confluence of the Kheer Gad and Bhagirathi River. Partial/complete destruction and disappearance of several buildings in the zone of the affected flood, probably submerged or sweeped by the intensive mud and splints,” ISRO said.
Also read: Uncertainty prevails over the cause of the Uttarkashi Floods
The agency said that many buildings seem to be immersed in mud and debris. “Satellite images would help to address the ongoing search and rescue operations and restore connectivity into an isolated area. This event emphasizes the increasing vulnerability of the Himalayan settlements.
Published – 8 August 2025 02:20
