What Happened
- A study by the Department of Geoinformatics, University of Kashmir, published in the Journal of Glaciology, has identified five glacial lakes in Jammu & Kashmir as having "very high susceptibility" to Glacial Lake Outburst Floods (GLOFs).
- The five lakes are Bramsar, Chirsar, Nundkol, Gangabal, and Bhagsar — all located in the Himalayan ranges of J&K.
- The study analysed 155 glacial lakes using hydro-geomorphic indicators including lake expansion rate, dam stability, and surrounding environmental conditions.
- Downstream impact zones contain approximately 2,704 buildings, 15 major bridges, key road segments, and at least one hydropower project.
- J&K Chief Minister Omar Abdullah acknowledged the findings and called for precautionary planning; officials clarified the classification indicates higher likelihood under specific triggers — not an imminent threat.
- Triggering conditions include intense rainfall, rapid snowmelt, and seismic activity — all increasingly probable under climate change.
- Bathymetric surveys of at-risk glacial lakes in the western Himalaya are planned for 2026 to improve hydrodynamic modelling and downstream risk evaluation.
Static Topic Bridges
Glacial Lake Outburst Flood (GLOF) — Mechanism and Himalayan Context
A GLOF is a sudden, large release of water from a glacial lake, typically impounded by a moraine or ice dam, triggered when the natural dam fails due to overtopping, seismic shock, or ice-mass movement. The Himalayas host one of the world's densest concentrations of glacial lakes, and accelerating glacier retreat under climate change is continuously forming new and expanding existing proglacial lakes. More than 388 GLOF events have been documented in the Himalaya-Karakoram region to date. Around 3 million people in India (out of 15 million globally) live in GLOF-risk zones, disproportionately in states like Himachal Pradesh, Uttarakhand, Sikkim, and J&K.
- Types of glacial lakes: moraine-dammed, ice-dammed, supraglacial, subglacial
- GLOF events can release millions of cubic metres of water within minutes
- The 2023 South Lhonak GLOF in Sikkim caused catastrophic destruction including to the Teesta-III dam
- Climate change accelerates glacier melt, increasing both lake area and lake volume
Connection to this news: The Kashmir study uses the same hydro-geomorphic risk framework increasingly used by scientists globally; the five flagged lakes illustrate the direct threat to downstream human settlements and infrastructure in J&K.
NDMA Guidelines on GLOF Management (2020)
The National Disaster Management Authority issued dedicated NDMA Guidelines on Management of GLOFs in 2020, developed in collaboration with the Swiss Agency for Development and Cooperation (SDC). These guidelines provide a structured framework for preparedness, prevention, mitigation, and response to GLOFs. The Central Government has also approved the National Glacial Lake Outburst Flood Risk Mitigation Project (NGRMP) covering four states: Arunachal Pradesh, Himachal Pradesh, Sikkim, and Uttarakhand. Early Warning Systems (EWS) including Automatic Weather Stations (AWS) have been installed in Sikkim as part of NGRMP.
- NDMA recommends restricting construction in high-hazard GLOF zones as the most cost-effective mitigation
- Structural measures: controlled breaching, pumping/siphoning out water, tunnelling through moraine barriers
- Community-based disaster management: local first-responders, mock drills, school awareness
- CWC has developed a Risk Indexing framework for glacial lakes using probability of failure and downstream damage potential
Connection to this news: J&K is not yet covered under NGRMP; the Kashmir study's findings strengthen the case for including J&K in national GLOF risk mitigation programmes and establishing EWS on the five identified lakes.
Western Himalayan Glaciers and Climate Change Vulnerability
The Himalayan cryosphere — comprising glaciers, snowfields, and permafrost — feeds rivers including the Indus, Jhelum, Chenab, and their tributaries, making it critical to water security for tens of millions. The Hindu Kush Himalaya Assessment (ICIMOD, 2019) warned that even if global warming is limited to 1.5°C, about one-third of Himalayan glaciers will melt by 2100; under a 4°C scenario, over two-thirds could be lost. Western Himalayan glaciers in J&K and Ladakh, part of the Karakoram range, display a mixed trend — some have shown anomalous stability (the "Karakoram Anomaly") — but the broader J&K Himalayan glaciers are retreating.
- India's glacierised area: approximately 75,000 sq km, mainly in J&K, Ladakh, HP, and Uttarakhand
- Indus basin glaciers (including J&K lakes) are among the most studied due to Indus Waters Treaty implications
- Proglacial lake area in the Hindu Kush Himalaya grew by 50% between 1990 and 2018
- Remote sensing and satellite data are primary monitoring tools given terrain inaccessibility
Connection to this news: The rapid expansion rate of the five Kashmir lakes is a direct consequence of glacier retreat, making this a climate change impact story with immediate infrastructure risk dimensions.
Disaster Risk Reduction — Sendai Framework and India's Obligations
India is a signatory to the Sendai Framework for Disaster Risk Reduction 2015–2030, which prioritises understanding disaster risk, strengthening governance, investing in resilience, and enhancing preparedness. The framework calls for a significant reduction in disaster-related mortality and infrastructure damage. Under the Disaster Management Act, 2005, the National Disaster Management Authority (NDMA) coordinates national-level risk planning while State Disaster Management Authorities (SDMAs) handle state-level implementation.
- Sendai Framework's four priorities: understanding risk; governance; investing in DRR; preparedness and response
- India's Disaster Management Act, 2005: establishes NDMA, SDMA, DDMA (district level)
- Article 48A and DPSP under Article 51A(g): state duty to protect environment
- 16th Finance Commission (2026–31) has expanded the Disaster Risk Index to include 10 disaster types, including cloudbursts and landslides relevant to mountain states
Connection to this news: The Kashmir GLOF study is precisely the kind of scientific risk assessment that should feed into SDMA-level land-use planning and NDMA policy, aligning with India's Sendai commitments.
Key Facts & Data
- Five lakes flagged: Bramsar, Chirsar, Nundkol, Gangabal, Bhagsar (all in J&K Himalaya)
- Study institution: Department of Geoinformatics, University of Kashmir
- Published in: Journal of Glaciology
- 155 glacial lakes assessed; 5 classified as "very high susceptibility"
- At-risk downstream: ~2,704 buildings, ~15 bridges, road segments, one hydropower project
- NDMA GLOF guidelines issued: 2020
- NGRMP covers: Arunachal Pradesh, Himachal Pradesh, Sikkim, Uttarakhand (J&K not yet included)
- Global GLOF-risk population: ~15 million; India share: ~3 million
- 388+ documented GLOF events in Himalaya-Karakoram region historically