India’s GLOF panel working on disaster mitigation at 200 high-risk glacial lakes
The National Disaster Management Authority (NDMA)'s glacial lake outburst flood (GLOF) panel is carrying out systematic disaster-mitigation work across roughly 200 high-risk glacial lakes identified in the Indian Himalayas
Multi-agency expeditions, involving scientists, army personnel, and technical specialists, are conducting on-ground field assessments of shortlisted lakes — for instance, a recent expedition covered high-risk lakes in North Sikkim's Mangan district over a multi-week field season
The work spans hazard and risk assessment, installation of monitoring and early warning infrastructure, structural mitigation measures such as controlled lowering of lake water levels, and community awareness programmes
The panel operates under the Committee on Disaster Risk Reduction (CoDRR), which draws representation from six Himalayan states/Union Territories along with central agencies
National Disaster Management Authority (NDMA) — Institutional Framework
The NDMA is India's apex statutory body for disaster management, established under the Disaster Management Act, 2005. It is responsible for laying down policies, plans, and guidelines for disaster management to ensure timely and effective response, and for coordinating enforcement across ministries and states.
Key Details
- Constituted under the Disaster Management Act, 2005 (enacted December 23, 2005, formally constituted September 27, 2006)
- Chaired by the Prime Minister; comprises up to nine other members, one of whom is designated Vice-Chairperson
- The Act also mandates State Disaster Management Authorities (SDMAs, chaired by the Chief Minister) and District Disaster Management Authorities (DDMAs) for a three-tier disaster governance structure
- The Act was enacted in the aftermath of the 2004 Indian Ocean tsunami, to move India's disaster approach from a relief-centric model to one emphasising prevention, mitigation, and preparedness
The GLOF expeditions and mitigation programme are executed through NDMA's institutional machinery — specifically its Committee on Disaster Risk Reduction — demonstrating the Act's mitigation mandate in practice.
National Disaster Mitigation Fund (NDMF)
Section 47 of the Disaster Management Act, 2005 provides for a National Disaster Mitigation Fund, to be applied by NDMA exclusively for mitigation projects — as distinct from the National Disaster Response Fund (NDRF, Section 46), which funds emergency relief after a disaster has struck.
Key Details
- NDMF finances local-level and community-based interventions that reduce disaster risk, including projects addressing lightning and heatwave risk, and now the National GLOF Risk Mitigation Programme
- This mitigation/response distinction mirrors the disaster management cycle taught for GS3: prevention → mitigation → preparedness → response → recovery
- Mitigation funding (proactive, pre-disaster) is structurally different from response/relief funding (reactive, post-disaster), a distinction UPSC frequently tests
The GLOF panel's field expeditions and early-warning installations are funded through the NDMF's mitigation window, reflecting the shift toward proactive Himalayan disaster governance since the 2023 Sikkim GLOF.
Early Warning Systems (EWS) and Remote Sensing for Glacial Hazards
Modern GLOF early warning systems combine satellite remote sensing (for lake area/volume change detection), ground-based sensors (water level, seismic, and acoustic sensors near moraine dams), and automated alert dissemination to downstream communities.
Key Details
- Expedition teams for India's GLOF programme draw on expertise from geologists, hydrologists, and remote-sensing specialists, with satellite-based monitoring support from India's space agency for glacier and lake-area change detection
- EWS installation is one of the four core components of the National GLOF Risk Mitigation Programme, alongside hazard assessment, structural mitigation, and community awareness
- Structural mitigation for glacial lakes can include controlled draining/lowering of lake water levels via siphons or channels to reduce the volume available for sudden release — a globally used GLOF mitigation technique (also used in Peru and Bhutan)
The technical, multi-agency character of NDMA's GLOF expeditions — combining space-based monitoring with ground assessment — reflects the S&T dimension of India's disaster mitigation approach, relevant for GS3 science-and-technology-in-disaster-management questions.
- High-risk glacial lakes shortlisted for mitigation by NDMA: ~190-200, out of an estimated 7,500-plus glacial lakes across the Indian Himalayas
- Disaster Management Act enacted: December 23, 2005; NDMA formally constituted: September 27, 2006
- NDMA composition: Prime Minister (Chairperson) plus up to nine members, one as Vice-Chairperson
- National GLOF Risk Mitigation Programme outlay: ~Rs 150 crore, implemented across Arunachal Pradesh, Himachal Pradesh, Sikkim, and Uttarakhand
- Statutory basis for mitigation funding: Section 47 (NDMF), distinct from Section 46 (NDRF) of the Disaster Management Act, 2005