Wayanad Landslide
Wayanad Landslide

Case Study: The Wayanad Landslide of 2024

Overview

  • Date: The early hours of July 30, 2024
  • Location: Wayanad District, Kerala, India, specifically the Meppadi region
  • Impact:
    • At least 300 people killed
    • Hundreds missing
    • Thousands displaced
    • Entire villages buried under mud and debris
    • Widespread destruction of homes, infrastructure, and natural landscapes

The Disaster

Wayanad’s Vulnerability

  • Steep slopes: The hilly terrain of Wayanad, while scenic, makes it inherently prone to landslides. Gravity acts more strongly on steep slopes, making it easier for soil and rock to give way.
  • Loose soil and weathered rock: The geological composition of the area includes loose soil and weathered rock, which are less stable and more easily dislodged, especially when saturated with water.
  • Heavy monsoon rains: Wayanad receives intense rainfall during the monsoon season, further increasing the risk of landslides. The water adds weight to the soil and reduces its friction, making it more likely to slide.
  • Deforestation, quarrying, and construction: Human activities like deforestation remove the natural vegetation that helps anchor the soil, while quarrying and construction can destabilize slopes, making them more susceptible to landslides.

Triggering Factors

  • Exceptionally heavy rainfall (over 500 mm in 48 hours): The immediate trigger for the landslides was the unusually intense rainfall. The sheer volume of water overwhelmed the soil’s capacity to absorb it, leading to rapid saturation and instability.
  • Soil saturation led to decreased shear strength: As the soil became saturated, the water filled the spaces between soil particles, reducing the friction that holds them together. This decrease in shear strength made the soil much weaker and more prone to sliding.
  • Gravitational forces overcame soil stability, causing landslides: With the soil weakened and saturated, the force of gravity acting on the steep slopes became too much for the soil to resist, resulting in massive landslides.

Areas Most Affected

  • Mundakkai and Chooralmala villages in Meppadi region were hit the hardest: These villages, located in the path of the landslides, experienced the most severe impact. The force and volume of the sliding debris caused widespread destruction.
  • Entire neighborhoods buried: The landslides were so powerful that entire neighborhoods were completely buried under mud and debris, leaving little chance for survival for those caught in the path.
  • Houses flattened, trees uprooted, roads washed away: The sheer force of the landslides flattened houses, uprooted trees, and washed away roads, leaving a scene of utter devastation.
  • Other affected villages: Puthumala, Kavalappara, Kattippara: While Mundakkai and Chooralmala were the worst hit, several other villages also suffered significant damage and loss of life.
  • Transportation networks disrupted, hindering rescue efforts: The landslides caused widespread damage to roads and bridges, making it difficult for rescue teams to reach affected areas and provide timely assistance. This further compounded the tragedy.

Image 1. An aerial view of the tea plantations after landslides in Wayanad. https://www.onmanorama.com/news/kerala/2024/08/03/wayanad-landslide-chooralmala-mundakkai-search-operation-death-toll-live.html

Disaster Response

  • Immediate Actions (KSDMA, NDRF):
    • The Kerala State Disaster Management Authority (KSDMA) swiftly activated its emergency response protocols, coordinating rescue and relief efforts across the affected areas.
    • The National Disaster Response Force (NDRF) deployed specialized teams equipped with heavy machinery and trained personnel to assist in search and rescue operations.
    • Local authorities, including the police and fire departments, also played a crucial role in the initial response, providing immediate assistance to those in need.
  • Search and Rescue Operations:
    • The focus of the initial response was on locating and rescuing survivors trapped under the debris.
    • NDRF teams, along with local volunteers and community members, worked tirelessly to clear the rubble and search for signs of life.
    • Sniffer dogs and specialized equipment were used to locate survivors buried deep beneath the mud and debris.
    • The challenging terrain and ongoing rainfall hampered rescue efforts, but the teams persevered, saving numerous lives in the process.
  • Relief Efforts (Shelter, Food, Medical Aid):
    • Temporary relief camps were set up to provide shelter to those displaced by the landslides.
    • Food, water, and essential supplies were distributed to the affected communities.
    • Medical teams were deployed to provide immediate medical assistance to the injured.
    • Psychological counseling was also offered to help survivors cope with the trauma of the disaster.
    • The government and various NGOs worked together to ensure that the basic needs of the affected population were met.

Recovery Efforts

  • Rehabilitation Programs (Housing, Livelihoods, Infrastructure):
    • The government initiated comprehensive rehabilitation programs to help the affected communities rebuild their lives.
    • Housing schemes were launched to provide safe and secure homes to those who lost their houses in the landslides.
    • Livelihood restoration programs were implemented to help people regain their sources of income and rebuild their businesses.
    • Infrastructure development projects were undertaken to repair and rebuild damaged roads, bridges, and other essential facilities.
  • Reconstruction Challenges:
    • The scale of the devastation posed significant challenges to the reconstruction efforts.
    • The remote location of some affected areas made it difficult to transport materials and equipment.
    • The monsoon season, with its heavy rainfall, further hampered reconstruction activities.
    • The emotional and psychological trauma experienced by the survivors also posed a challenge to the recovery process.
  • Progress and Timelines:
    • The recovery efforts are ongoing, with significant progress made in various areas.
    • Several families have been relocated to new homes, and livelihood restoration programs have helped many people regain their financial independence.
    • Infrastructure reconstruction is also underway, with roads and bridges being repaired and rebuilt.
    • However, the complete recovery of the affected communities will take time and continued support from the government and other stakeholders.

Successes and Failures

  • Effective Response Aspects:
    • Swift activation of emergency response protocols: The KSDMA and NDRF acted quickly to deploy resources and personnel to the affected areas, saving numerous lives.
    • Collaborative rescue efforts: The coordinated efforts of various agencies, including the NDRF, local authorities, and community volunteers, were crucial in rescuing survivors.
    • Provision of immediate relief: The establishment of relief camps and distribution of essential supplies ensured the basic needs of the affected population were met.
  • Recovery Achievements:
    • Comprehensive rehabilitation programs: The government’s commitment to providing housing, livelihood support, and infrastructure development has helped the affected communities rebuild their lives.
    • Community resilience: The strength and resilience demonstrated by the survivors in the face of adversity have been instrumental in the recovery process.
  • Shortcomings:
    • Early warning systems: The lack of effective early warning systems meant that many people were caught unaware by the landslides, leading to a higher number of casualties.
    • Recovery pace: The reconstruction efforts have been slow in some areas, leaving many people still living in temporary shelters and struggling to rebuild their lives.
    • Long-term sustainability: Ensuring the long-term sustainability of the recovery efforts, including livelihood restoration and infrastructure development, remains a challenge.

Mitigation and Preparedness

1. Mitigation Strategies:

  • Slope stabilization: Implementing measures to stabilize slopes, such as terracing, retaining walls, and drainage systems, can reduce the risk of landslides.
  • Afforestation and reforestation: Planting trees and restoring vegetation cover can help anchor the soil and reduce erosion, thereby mitigating landslide risks.
  • Hazard mapping: Identifying and mapping areas prone to landslides can help in land-use planning and early warning systems.
  • Early Warning Systems:
    • Rainfall monitoring: Installing rainfall gauges and monitoring real-time rainfall data can help predict potential landslide events.
    • Landslide monitoring: Implementing landslide monitoring systems, such as slope inclinometers and ground movement sensors, can provide early warnings of impending landslides.
    • Community-based early warning systems: Empowering local communities to identify signs of potential landslides and disseminate warnings can save lives.
  • Land-Use Planning and Regulation:
    • Restricting development on vulnerable slopes: Enforcing strict regulations on construction and development activities in landslide-prone areas can prevent future disasters.
    • Promoting sustainable land-use practices: Encouraging sustainable agricultural practices and discouraging deforestation can help maintain the ecological balance and reduce landslide risks.
  • Infrastructure Development:
    • Building resilient infrastructure: Constructing roads, bridges, and other infrastructure that can withstand the impact of landslides can minimize damage and disruption.
    • Improving drainage systems: Enhancing drainage systems to effectively manage runoff and prevent waterlogging can reduce the risk of landslides.
  • Community Awareness and Education:
    • Educating communities about landslide risks: Raising awareness about the causes and consequences of landslides can help people make informed decisions and take necessary precautions.
    • Conducting drills and evacuation exercises: Regular drills and evacuation exercises can prepare communities to respond effectively in the event of a landslide.
    • Empowering communities to participate in disaster preparedness and response: Engaging local communities in the planning and implementation of mitigation and preparedness measures can enhance their resilience to landslides.

2. Preparedness Measures

  • Emergency Response Plans:
    • Developing comprehensive plans: Creating detailed plans for responding to landslides, including evacuation procedures, search and rescue operations, and relief efforts.
    • Identifying roles and responsibilities: Clearly defining the roles and responsibilities of various agencies and organizations involved in disaster response.
    • Conducting regular drills and exercises: Regularly practicing emergency response plans to ensure preparedness and identify areas for improvement.
  • Resource Mobilization:
    • Stockpiling essential supplies: Maintaining adequate stocks of food, water, medical supplies, and other essentials to meet the needs of affected communities in the aftermath of a landslide.
    • Establishing communication networks: Ensuring reliable communication systems are in place to facilitate coordination and information sharing during emergencies.
    • Identifying and training volunteers: Building a network of trained volunteers who can assist in rescue and relief efforts.
  • Training and Capacity Building:
    • Training first responders: Providing training to police, fire departments, and other first responders on landslide rescue techniques and emergency response procedures.
    • Building community capacity: Educating and empowering communities to participate in disaster preparedness and response activities.
    • Enhancing technical expertise: Developing the technical expertise of government agencies and NGOs involved in disaster management.
  • Communication and Information Dissemination:
    • Establishing early warning systems: Implementing effective early warning systems to alert communities of impending landslides.
    • Using multiple communication channels: Utilizing various communication channels, including radio, television, social media, and mobile alerts, to disseminate information and warnings.
    • Ensuring transparency and accountability: Providing timely and accurate information to the public about the disaster and the ongoing response efforts.

The Way Forward

  • Importance of Proactive Measures:
    • The Wayanad landslides underscore the critical need for proactive measures to mitigate the impact of such disasters.
    • Investing in early warning systems, slope stabilization, and sustainable land-use practices can significantly reduce the risk of landslides and save lives.
    • Building resilient infrastructure and communities is essential for long-term sustainability.
  • Collaboration for Resilience:
    • Effective disaster management requires collaboration and coordination among various stakeholders, including government agencies, NGOs, local communities, and international organizations.
    • Sharing knowledge, resources, and expertise can enhance preparedness and response capabilities.
    • Empowering local communities to participate in decision-making and implementation processes is crucial for building resilience.
  • Prioritizing Long-Term Sustainability:
    • Recovery efforts should focus not only on immediate relief but also on long-term sustainability.
    • This includes investing in livelihood restoration, infrastructure development, and environmental conservation.
    • Building back better, with a focus on resilience and sustainability, can help mitigate the impact of future disasters.

Conclusion

  • Lessons Learned:
    • The Wayanad landslides highlighted the vulnerability of hilly regions to natural disasters and the importance of preparedness.
    • The tragedy underscored the need for effective early warning systems, sustainable land-use practices, and resilient infrastructure.
    • The collaborative efforts of various stakeholders demonstrated the power of collective action in responding to disasters.
  • Recommendations for Future (Mitigation, Preparedness):
    • Invest in comprehensive early warning systems for landslides.
    • Enforce strict regulations on land-use planning and construction in vulnerable areas.
    • Promote sustainable agricultural practices and afforestation to mitigate landslide risks.
    • Build resilient infrastructure that can withstand the impact of natural disasters.
    • Empower local communities to participate in disaster preparedness and response efforts.
    • Conduct regular drills and exercises to ensure preparedness.
    • Prioritize long-term sustainability in recovery and reconstruction efforts.

By learning from the Wayanad tragedy and implementing these recommendations, we can strive to create safer and more resilient communities in the face of natural disasters.

QUIZ

1 The National Disaster Response Force (NDRF) in India works under which ministry?

a) Ministry of Home Affairs

b) Ministry of Defence

c) Ministry of Environment, Forest and Climate Change

d) Ministry of Health and Family Welfare

Answer: a) Ministry of Home Affairs

2 Early warning systems for landslides primarily aim to:

a) Prevent landslides from occurring

b) Minimize damage caused by landslides

c) Facilitate timely evacuation of people from at-risk areas

d) Predict the exact location of future landslides

Answer: c)

3 Which of the following is an example of sustainable land management practice?

a) Converting forests into agricultural land

b) Promoting afforestation and reforestation

c) Unregulated construction on slopes

d) Excessive quarrying

Answer: b)

4. Climate change is expected to lead to:

a) More frequent and intense rainfall events

b) Increased frequency of droughts

c) Rising sea levels

d) All of the above

Answer: d)

5 What is the long-term solution for reducing landslide risks in Wayanad?

  • a) Early warning systems
  • b) Afforestation and reforestation
  • c) Addressing climate change
  • d) Stricter land use regulations

Answer: c)

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