What is the common examiner trap about Environment in UPSC exams?

Examiners may confuse 'total glacial lakes (344)' with 'high-risk lakes (13)' or swap the number of Category A lakes (5) with total high-risk lakes. Also, remember the Nepal disaster was triggered by glacial collapse, NOT an earthquake.

What should UPSC aspirants remember about Environment for Prelims?

1. Target this Data: 13 high-risk glacial lakes in Uttarakhand (NDMA), 344 total (NRSC, 2023), 5 Category A lakes 2. Target this Nodal Body: National Disaster Management Authority (NDMA) & Uttarakhand State Disaster Management Authority (USDMA) 3. Target this Location: Vasundhara Tal (Chamoli, Uttarakhand) - first glacial lake EWS in the state

EnvironmentDisaster Management

Take AI Challenge ▸

News 10 of 14

Uttarakhand Installs First Glacial Lake Early-Warning System at Vasundhara Tal in Chamoli

Q: Which national authority identified 13 high-risk glacial lakes in Uttarakhand?

National Disaster Management Authority (NDMA), The article states that NDMA identified 13 high-risk glacial lakes in Uttarakhand, of which five were Category A. NRSC identified 344 total glacial lakes in 2023, but the risk classification was done by NDMA.

Q: Consider the following statements: 1. Vasundhara Tal is the first glacial lake in Uttarakhand to get a real-time early-warning system. 2. The Nepal disaster in August 2026 was caused by an earthquake. 3. Bathymetric surveys have been completed at six glacial lakes in Uttarakhand. Which of the statements given above is/are correct?

Both 1 and 3, Statement 1 is correct: This is Uttarakhand's first glacial lake early-warning system, installed at Vasundhara Tal. Statement 2 is incorrect: The US Geological Survey found the seismic energy was generated by a glacial collapse and debris flow, not an earthquake. Statement 3 is correct: Bathymetric surveys were completed at six lakes (Saraswati Tal, Vasundhara Tal, Kedartal, Mabang, Pyungru, Syunkti Yankti).

Q: How many glacial lakes were identified in Uttarakhand in 2023 by the National Remote Sensing Centre?

344, According to the article, the National Remote Sensing Centre identified 344 glacial lakes in Uttarakhand in 2023. Option A (13) is the number of high-risk lakes identified by NDMA. Option C (5) is the number of Category A lakes. Option D (6) is the number of lakes where bathymetric surveys were completed.

Q: What is the primary objective of installing the early-warning system at Vasundhara Tal?

To monitor environmental changes and generate timely alerts for potential GLOFs, The system monitors water level, weather, snow conditions, and ground movement to detect abnormal changes and generate alerts before a GLOF occurs. While the data may also help study climate change, the core objective is disaster risk reduction through early warning.

Environment Disaster ManagementHIGH

Target:UPSC GS-IIIMPSCSSC GATeachingPrelims HighMains MediumStatic GK Link

29 Sept 2026

~2 min

Source: Indian Express

Key Data:13 high-risk lakes5 Category A lakes344 glacial lakes (2023)Vasundhara TalChamoli

Bodies:NDMAUSDMACBRIWadia Institute of Himalayan GeologySDRFNDRFITBPNRSC

Practice MCQs from today's news ▸

~2 min · Quick mode

What This Article Covers

1.Uttarakhand's first early-warning system for a glacial lake is being installed at Vasundhara Tal (Chamoli) from September 29 to October 15, 2026.

2.The system will monitor water level, weather, snow conditions, and ground movement using sensors powered by solar energy and satellite communication.

3.The initiative is backed by CBRI, Wadia Institute of Himalayan Geology, SDRF, NDRF, and ITBP, following NDMA's identification of 13 high-risk glacial lakes in the state.

The Big Picture

Prelims · HighMains · Medium

Uttarakhand has begun installing its first real-time early-warning system for a glacial lake at Vasundhara Tal (Chamoli) to mitigate Glacial Lake Outburst Flood (GLOF) risks. This follows the Nepal disaster (August 2026) and the state’s own Dharali flash flood (2025), marking a shift from mapping to active monitoring of high-risk Himalayan lakes.

Exam Lens

Quick Exam Facts From News

Lake NameVasundhara Tal (Chamoli)

Total High-Risk Lakes (NDMA)13 (5 Category A)

Total Glacial Lakes (Uttarakhand, 2023)344 (NRSC)

Agencies InvolvedCBRI, Wadia Institute, SDRF, NDRF, ITBP

1-Minute Revision

›Lake Name: Vasundhara Tal (Chamoli)
›Total High-Risk Lakes (NDMA): 13 (5 Category A)
›Target this Data: 13 high-risk glacial lakes in Uttarakhand (NDMA), 344 total (NRSC, 2023), 5 Category A lakes
›Target this Nodal Body: National Disaster Management Authority (NDMA) & Uttarakhand State Disaster Management Authority (USDMA)
›Target this Location: Vasundhara Tal (Chamoli, Uttarakhand) - first glacial lake EWS in the state

Mastered this topic? Test your knowledge with a full MCQ quiz.

Practice exam-style questions, track your score, and strengthen your recall.

News Snapshot

🏔️

First Real-Time GLOF Warning System

Uttarakhand installs its first early-warning system at Vasundhara Tal to monitor water level, weather, snow, and ground movement in real time.

📊

13 High-Risk Lakes Identified

NDMA identified 13 high-risk glacial lakes in Uttarakhand; Vasundhara Tal is Category A (highest risk).

🚨

Triggered by Nepal Disaster & Dharali Flood

The August 2026 Nepal flood and the 2025 Dharali flash flood (Uttarkashi) underscored the urgent need for GLOF early warning.

Detailed Analysis & Strategic Depth

Context / Background

Himalayan glacial lakes are expanding due to climate change, increasing GLOF risk. In August 2026, a glacial collapse and debris flow in Nepal's Lhende Khola/Bhote Koshi river system killed hundreds. Earlier, Uttarakhand's Dharali flash flood (2025) had an unclear trigger, highlighting monitoring gaps. NDMA had identified 13 high-risk lakes in Uttarakhand, with Vasundhara Tal among the highest-risk Category A.

Core Analysis & Implications

This system represents a shift from passive mapping to active, real-time monitoring. It uses a water-level sensor, automatic weather station, snow-depth sensors, tilt/accelerometer sensors, and water-flow sensors. Data is transmitted via satellite due to lack of mobile networks in high-altitude regions. The larger challenge remains converting sensor data into timely warnings for downstream communities, roads, bridges, and hydropower projects.

Future Outlook / Way Forward

Bathymetric surveys have been completed at six lakes (Saraswati Tal, Vasundhara Tal, Kedartal, Mabang, Pyungru, Syunkti Yankti). The state aims to expand monitoring to other high-risk lakes. The use of satellite phones and low-Earth-orbit communication devices ensures connectivity. Success will depend on integrating data with community-level disaster response mechanisms and establishing threshold-based alert protocols.

Key Facts at a Glance

Lake NameVasundhara Tal (Chamoli)

Total High-Risk Lakes (NDMA)13 (5 Category A)

Total Glacial Lakes (Uttarakhand, 2023)344 (NRSC)

Agencies InvolvedCBRI, Wadia Institute, SDRF, NDRF, ITBP

You've read the full analysis. Now test your understanding.

Practice exam-style questions based on this article.

Q1Static LinkageEasyUPSC, SSC, State PSC

Which national authority identified 13 high-risk glacial lakes in Uttarakhand?

Q2Statement-basedHardUPSC, SSC

Consider the following statements:

1. Vasundhara Tal is the first glacial lake in Uttarakhand to get a real-time early-warning system.

2. The Nepal disaster in August 2026 was caused by an earthquake.

3. Bathymetric surveys have been completed at six glacial lakes in Uttarakhand.

Which of the statements given above is/are correct?

Q3Data-centricMediumUPSC, Banking, SSC

How many glacial lakes were identified in Uttarakhand in 2023 by the National Remote Sensing Centre?

Q4Application/ImpactMediumUPSC, SSC, State PSC

What is the primary objective of installing the early-warning system at Vasundhara Tal?

All 19 MCQs ▸

Read original article from Indian Express

You finished this topic

Practice 3 MCQs from this news Next Article

Explore Related Topics

EnvironmentView Topic MCQs →Disaster ManagementView Topic MCQs →

PreviousDelhi Govt Approves 30 EV Mechanised Sweepers for 609 km Narrow Roads to Curb Dust Pollution Next US President Trump Signs AI Safety Accord with Google, Meta, OpenAI, NVIDIA

Related Current Affairs

Environment Current Affairs

Sikkim Identifies 40 High-Hazard Glacial Lakes, 16 in Category A at GLOF Risk

Sikkim has identified 40 high-hazard glacial lakes, with 16 in the highest risk category (Category A) for Glacial Lake Outburst Floods (GLOFs). The state is developing India's first dedicated GLOF Risk Mitigation Protocol, with Shako Chho identified as the most vulnerable lake. This comes after the devastating October 2023 GLOF in Sikkim that killed 60 people and destroyed the Chungthang dam.

Environment Current Affairs

Over 900 Killed in Nepal Flash Floods; 26 GLOF Events Since 1970s Underscore Disaster Risk

Flash floods in Nepal caused over 900 deaths, serving as a stark reminder of increasing frequency and intensity of natural disasters due to climate change. The article highlights glacial lake outburst floods (GLOFs), glacier loss data, and the disproportionate impact on low-income countries, emphasizing the urgent need for enhanced disaster preparedness and resilience.

Environment Current Affairs

UN Report: 14 Million at Risk of Permanent Inundation; Sea Level Rise Hits Record 5.9 mm in 2024

A new UN report submitted to the General Assembly warns that sea levels rose at a record 5.9 mm in 2024, threatening 14 million people in South Asian megacities like Mumbai, Kolkata, and Dhaka with permanent inundation. For Mumbai, risks are compounded by land subsidence, saltwater intrusion, and increasing extreme rainfall events. This is critical for disaster management, climate change adaptation, and geography syllabus.

Environment Current Affairs

NDMA Plans Comprehensive Study of Nepal Glacial Collapse; India Achieves 20% Ethanol Blending by 2025-26

A hanging glacier collapse in Nepal triggered a devastating flash flood, killing over 350, prompting NDMA to plan a comprehensive study to reduce GLOF risks in India. Simultaneously, India achieved 20% ethanol blending by 2025-26, five years ahead of schedule, but faces backlash from older vehicle owners; discussions on offering E10 alongside E20 are underway. The Kailash Mansarovar Yatra saw a surge in 2026 after resumption, and India-China special representatives reached an eight-point consensus on border management.

Environment Current Affairs

734 Dead, 3,000 Missing in Nepal Floods: Experts Flag GLOF Risks from 13 Damaged Hydropower Plants in Himalayas

A glacial lake outburst flood (GLOF) in Nepal, triggered by a glacier collapse near the China-Tibet border, has killed over 734 people and left 3,000 missing, including 320 Indians. Experts warn that unregulated dam-building across the Himalayas, combined with rapid climate change, is creating a disaster-prone landscape that demands urgent transboundary cooperation.

Environment Current Affairs

Nepal Flood Disaster: 350+ Dead in Bhotekoshi-Trishuli River GLOF Event, Similar to Kedarnath 2013

The devastating Nepal floods (August 2026) with 350+ casualties in the Bhotekoshi-Trishuli river system are a textbook case of cascading Himalayan glacial disasters. This event mirrors past tragedies in India (Kedarnath 2013, Chamoli 2021, Sikkim 2023) and underscores the urgent need for early warning systems under the National GLOF Risk Mitigation Programme (NGRMP). For exam aspirants, this is a high-yield topic linking geography, disaster management, and climate change.

Environment Current Affairs

Nepal Flash Floods: Hanging Glacier Collapse Triggers 359 Deaths; NDMA Plans Comprehensive Study for Indian Himalayan States

A catastrophic flash flood in Nepal, likely triggered by the collapse of a hanging glacier, has killed 359 people. India's NDMA is initiating a comprehensive study to understand and mitigate risks in vulnerable Himalayan states, reinforcing the importance of the National GLOF Risk Management Programme for early warning systems on glacial lakes.

Environment Current Affairs

Nepal Demands Climate Compensation from US, China, India After Glacial Flood Kills 1,200

Nepal, emitting only 0.1% of global GHGs, is demanding direct compensation from the top three emitters (US, China, India) after a glacial collapse killed 1,200+ people. This shifts the climate debate from charity to legal liability, testing the limits of adaptation and the principle of climate justice.

Start Today's Quiz(19 Qs)

Take Today's Quiz

19 Qs • 5-7 Mins

Uttarakhand Installs First Glacial Lake Early-Warning System at Vasundhara Tal in Chamoli

Exam Lens

Quick Exam Facts From News

1-Minute Revision

News Snapshot

First Real-Time GLOF Warning System

13 High-Risk Lakes Identified

Triggered by Nepal Disaster & Dharali Flood

Detailed Analysis & Strategic Depth

Context / Background

Core Analysis & Implications

Future Outlook / Way Forward

Prelims Flashpoints

Key Facts at a Glance