Sikkim GLOF: entire Mangan road network badly affected by flash flood

This is a Post Disaster Needs Assessment (PDNA) report issued by the Government of Sikkim in collaboration with the National Disaster Management Authority (NDMA) to assess damages and outline recovery needs following the October 2023 Glacial Lake Outburst Flood (GLOF). It matters to citizens as it details the scale of the disaster, the affected sectors, and the government's strategy for reconstruction and resilience.

Who it concerns: The report concerns the Government of Sikkim, the National Disaster Management Authority (NDMA), and the residents of the four affected districts: Mangan, Gangtok, Namchi, and Pakyong. It also involves international and national agencies such as UNDP, CDRI, NIDM, UNICEF, and IIT who provided technical support.

What the document says

• On the night of 3 October 2023, a massive landmass slipped into South Lhonak lake, triggering a flash flood along the Teesta River basin.
• The disaster resulted in the loss of 55 lives and affected an estimated 80,000 people across 100 villages.
• Severe damage occurred in the low-lying areas of Mangan, Gangtok, Namchi, and Pakyong districts.
• The PDNA was conducted from 7 to 11 December 2023 by the State Government of Sikkim and NDMA.
• The report covers eight sectors: Housing, Education, Health, Agriculture, Animal Husbandry, Tourism, Infrastructure (Roads/Water), and Forest/Environment.
• The recovery vision includes integrated communication for risk-informed practices, mainstreaming disaster risk reduction in development planning, community-centered reconstruction, and technology integration for early warning.

Also in the document

• Relief assistance was provided to displaced families over and above the norms laid by the Government of India.
• Rescue efforts involved the National Disaster Response Force, State Disaster Response Force, Army, Sikkim Police, and ITBP.
• The total road network of Mangan District was badly affected by the flash flood.
• The assessment process involved participatory appraisals and consultations with stakeholders and communities in the affected areas.