Summary
A peer-reviewed modelling study funded by DRDO and published in the journal Landslides assessed three hanging glaciers above Badrinath in Uttarakhand. In its worst-case scenario, an ice avalanche from the largest glacier could damage nearly 398 buildings, two bridges, a helipad, a parking area and kilometres of road.
The finding exposes a gap in India's disaster planning. National mitigation effort is organised around glacial lakes, while ice masses perched on slopes, the hazard behind the 2021 Chamoli disaster, have no dedicated mapping or zoning regime.
WHY IT MATTERS FOR UPSC & STATE PCS
A study published in the journal Landslides on 28 October 2026, by researchers from IISc, DRDO and the University of Cambridge, modelled ice avalanches from three hanging glaciers above Badrinath. It found that the town's built-up area lies in the path of a possible collapse.
Standard News
Two Himalayan Disasters, One Programme: Why Badrinath Falls Between Them
The last two great Himalayan disasters in Uttarakhand did not look alike and that difference matters more than any number in this week's study.
Kedarnath and Chamoli: Two Kinds of Catastrophe In June 2013,
Kedarnath was destroyed by water: extreme rainfall combined with a glacial lake giving way above the shrine. The lesson India drew was about lakes and it was the right lesson for that disaster. In February 2021, the Rishiganga valley in Chamoli was hit by something different.
There was no swollen lake and no monsoon. A rock and ice avalanche broke away from a hanging glacier high above the valley and turned into a fast debris flow. It destroyed the Rishiganga hydro project, badly damaged the Tapovan-Vishnugad project and killed over 200 people.
These were two different hazards. Policy, however, absorbed only the first. NDMA's National Glacial Lake Outburst Floods Risk Mitigation Programme now evaluates 189 high-risk glacial lakes for early warning and lake lowering.
That is a serious programme, but it is built for the 2013 kind of disaster. There is no equivalent national effort for the 2021 kind.
Where Badrinath Sits
The new study on Badrinath belongs squarely to the 2021 category. Hanging glaciers are ice bodies perched on steep slopes, often ending abruptly at bedrock cliffs. They are cut off from the valley floor, which is exactly why a town below them does not see them as a threat.
The researchers identified three such glaciers above the town using satellite imagery and elevation models. They screened for slopes of 30 degrees or more, then simulated collapses. In the study's modelled worst case, the largest glacier could damage nearly 398 buildings, two bridges, a helipad and a parking area.
The paper links the rising risk to warming: as glaciers move toward temperate conditions, their grip on the bedrock weakens, making detachment more likely. This is not an isolated finding. An April 2026 inventory identified 219 hanging glaciers in the Central Himalaya, with about 30 per cent in the Alaknanda basin, the same basin Badrinath sits in.
Where the Parallel Breaks Down Chamoli is the
nearest precedent, but it is not a perfect one. The Rishiganga flow tore through a thinly populated valley dominated by hydropower works. Badrinath is a dense town that, by reported figures, drew around 17 lakh pilgrims during the 2025 Char Dham yatra.
A Chamoli-type event here would be a disaster for people, not mainly for infrastructure. The other difference cuts the other way. Chamoli was understood only after it happened. For Badrinath, the hazard has been modelled before the event, which gives planners a window that did not exist in 2021.
What This Means for the Exam
The pattern UPSC aspirants should carry is this. India's Himalayan disaster policy has learned from each catastrophe, but it has learned narrowly, from the specific mechanism of the most recent one. Badrinath shows the cost of that habit: the hazard best documented after 2021 still has no programme of its own.
Treat glacial hazards as a family of distinct mechanisms, each needing its own mapping, rather than as a single "glacier problem".
Quick Facts
Key numbers & takeaways — revise these first
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Badrinath lies on the banks of the Alaknanda river, a major tributary of the Ganga.
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The Alaknanda rises from the Satopanth and Bhagirath Kharak glaciers and meets the Bhagirathi at Devprayag to form the Ganga.
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The Badrinath study assessed three hanging glaciers lying between 4,700 and 5,465 metres.
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In the worst case, the largest glacier could damage nearly 398 buildings, two bridges, a helipad and a parking area.
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An April 2026 study identified 219 hanging glaciers in the Central Himalaya, with about 30 per cent in the Alaknanda basin.
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NDMA's National GLOF Risk Mitigation Programme covers 189 high-risk glacial lakes.
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The Chamoli disaster of 7 February 2021 was triggered by a rock and ice avalanche and killed over 200 people.
Connect the dots for your UPSC preparation.
Standard news covers the event. Log in to read our comprehensive analysis and uncover the hidden constitutional, structural, and ethical dimensions of this topic:
Why NDMA's lake-centred programme structurally cannot see the hazard modelled above Badrinath
The four causes behind the rising risk, from loss of basal grip to the concentration of pilgrim infrastructure in one narrow valley
The Chamoli 2021 case study and the precise point where it stops being a guide for Badrinath
A short- and long-term plan that turns a research finding into zoning and early warning
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