Uttarakhand Deploys First Real-Time Early-Warning System at Vasundhara Tal Glacial Lake

A scientific-technical team has begun installing Uttarakhand’s inaugural early-warning system at Vasundhara Tal in Chamoli district. The expedition, flagged off by Chief Secretary Anand Bardhan, runs from September 29 to October 15 and is coordinated by the Uttarakhand State Disaster Management Authority (USDMA) under the National Glacial Lake Outburst Flood (GLOF) Risk Reduction Programme. Sensors, satellite communications and solar power will enable continuous monitoring of water level, weather, snow conditions, ground movement and downstream flow.

New Indian ExpressUttarakhand Installs Early Warning Systems For Glacial Lake Floods Scientists set out to install U’khand’s first early warning system at glacial lake The Indian ExpressUttarakhand’s first glacial lake warning system: How it will help detect flood risks before disaster strikes

Glacial lake outburst floods (GLOFs) occur when a moraine-dammed lake suddenly breaches, releasing large volumes of water that can devastate downstream communities, infrastructure and hydropower projects. Recent Himalayan disasters—including the August 2023 flood in Nepal’s Lhende Khola/Bhote Koshi basin and Uttarakhand’s 2022 Dharali flash flood—have heightened concern over GLOF hazards in the region. In response, the National Disaster Management Authority (NDMA) identified 13 high-risk glacial lakes in Uttarakhand, classifying five of them, including Vasundhara Tal, as Category A—the highest risk tier.

The Indian ExpressUttarakhand’s first glacial lake warning system: How it will help detect flood risks before disaster strikes Uttarakhand Installs Early Warning Systems For Glacial Lake Floods New Indian ExpressScientists set out to install U’khand’s first early warning system at glacial lake

• 344 glacial lakes were catalogued in Uttarakhand in 2023 by the National Remote Sensing Centre.

Uttarakhand Installs Early Warning Systems For Glacial Lake Floods

• 13 lakes are designated high-risk by the NDMA and technical institutions. Distribution: six in Pithoragarh, four in Chamoli, and one each in Bageshwar, Tehri Garhwal and Uttarkashi.

Uttarakhand’s first glacial lake warning system: How it will help detect flood risks before disaster strikes

• Bathymetric surveys have been completed at six lakes—Saraswati Tal and Vasundhara Tal (Chamoli); Kedartal (Uttarkashi); Mabang, Pyungru and Syukti Yankti (Pithoragarh)—providing depth and water-holding capacity data essential for GLOF modeling.

Uttarakhand’s first glacial lake warning system: How it will help detect flood risks before disaster strikes

• “This initiative will be a milestone in understanding the risks and reducing the threat of glacial lake outburst floods in the years ahead,” — Anand Bardhan, uttarakhand chief secretary

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• “The installation of an early warning system at Vasundhara Tal is an important step towards strengthening the state’s disaster preparedness through technology and a scientific approach,” — Pushkar Singh Dhami, chief minister

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• “Snow-depth sensors will measure changes in snow around the lake, while eight sensors placed below the surface will record temperatures at different depths,” — Vinod Kumar Suman, rehabilitation secretary

Scientists set out to install U’khand’s first early warning system at glacial lake

Real-time data from the Vasundhara Tal system will allow authorities to issue alerts before a potential breach reaches populated valleys. Satellite phones and low-Earth-orbit communication devices have been provided to maintain contact with remote teams, addressing the challenge of delivering warnings in an area lacking mobile networks. By establishing a monitoring template, Uttarakhand aims to expand similar installations across other high-altitude lakes, enhancing regional resilience to climate-induced glacial hazards.

Uttarakhand’s first glacial lake warning system: How it will help detect flood risks before disaster strikes

• September 29 – Expedition departs from the state secretariat; installation work begins.

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• October 15 – Scheduled completion of the initial instrumentation phase at Vasundhara Tal.

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USDMA plans to replicate the sensor suite—water-level, weather, snow-depth, tilt, accelerometer and flow meters—in the remaining high-risk lakes identified by the NDMA. Ongoing data analysis will feed into a statewide dashboard, supporting coordinated response efforts for downstream settlements, transport corridors and hydroelectric facilities.

The Indian Express