{"id":343788,"date":"2025-07-31T18:32:00","date_gmt":"2025-07-31T13:02:00","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=343788"},"modified":"2025-07-31T18:32:47","modified_gmt":"2025-07-31T13:02:47","slug":"343788-2","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/343788-2\/","title":{"rendered":"Wayanad Landslide- Causes, impact and management of Landslides in India- Explained Pointwise"},"content":{"rendered":"

30th July this year marks the 1st anniversary of the calamitous Wayanad landslide<\/span> that wreaked havoc in Kerala in 2024 and resulted in the loss of lives of 298 people. It was one of the biggest natural disaster in the country. According to experts, it is the biggest landslide-related disaster in the state in terms of casualities. This catastrophe has again put the spotlight<\/span> on the reports of the Madhav Gadgil Committee<\/span> (2011) and the K Kasturirangan-led High Level Working Group<\/span> (2013), which had recommended<\/span> that these areas to be demarcated as Ecologically Sensitive Areas<\/span>. However, these were met with resistance and never implemented.<\/p>\n

\"Wayanad
Created By Forum IAS<\/figcaption><\/figure>\n\n\n\n
Factors behind the Wayanad Landslide:<\/strong>
\n1. <\/strong>Wayanad witnessed 140mm of rainfall<\/span>, with some areas reporting more than 300 mm of rainfall<\/span>. This rainfall was about five times more<\/span> than IMD’s projections.
\n2.<\/strong> Overflow in the Chaliyar river<\/span> swept more sediment downstream. This was due to the fact that heavy rains in 2020 had caused the Chaliyar to strip swaths of its upstream areas<\/span> of plant cover. This left more rocks and humus vulnerable to being displaced.
\n3.<\/strong> The heavy rainfall has saturated with moisture. The water reaches the rocks by flowing between the soil and the rock layers. This weakens the force that binds the soil to the rocks<\/span> and triggers the movement.
\n4.<\/strong> Quarrying<\/span>, linear infrastructure development<\/span>, and construction activities<\/span> have compromised ecosystems\u2019 ability to cope with changing natural conditions.
\n5.<\/strong> Monocropping<\/span>, has resulted in the cut down of large<\/span>, native trees<\/span>, which serve to hold the topsoil to the bedrock. The replacement of these native trees with big plantation crops, such as tea and coffee having shallow roots, has increased the vulnerability.
\n6.<\/strong> According to a study by the International Journal of Environment and Public Health, Wayanad has lost 60 per cent of its forests between 1950 and 2018<\/span>. The erosion of the green cover has made Kerala susceptible to landslides.
\n7.<\/strong> Climate Change has been leading to gradual warming of the Arabian Sea<\/span> leading to the formation of a deep cloud system<\/span> over parts of the Western Ghats.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n
Table of Content<\/strong><\/td>\n<\/tr>\n
What are landslides? What is the status of India’s Vulnerability to Landslides?<\/a>
\nWhat are the causes of landslides in India?<\/a>
\nWhat are the Impacts of Landslides in India?<\/a>
\nWhat initiatives have been taken by the Government to mitigate the risks due to landslides?<\/a>
\nWhat are the challenges in implementation of measures proposed for landslide Mitigation?<\/a>
\nWhat Should be the Way Forward?<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>What are landslides? What is the status of India’s Vulnerability to Landslides?<\/strong><\/span><\/h2>\n

Landslide:<\/strong>\u00a0It is a natural phenomenon which is usually observed in steep mountainous regions<\/span> where large quantities of material, composed of rock, boulders, loose mud, soil and debris, are driven down the slope with force.<\/p>\n

Types of Landslides:<\/strong><\/p>\n

\"Landslide
Source- ISRO Landslide Atlas of India<\/figcaption><\/figure>\n

Vulnerability of India to Landslides:<\/strong><\/p>\n\n\n\n\n
ISRO’s Landslide Atlas of India<\/strong><\/td>\nAccording to ISRO’s Landslide Atlas of India, India is among the top four countries with highest landslide risk. It has been <\/span><\/span>estim<\/span>ated that loss of life per 100 km2<\/span> is greater than one<\/span>.<\/td>\n<\/tr>\n
India Landslide Susceptibility Map (ILSM) by IIT Madras<\/strong><\/td>\nIndia accounts for about 8% of global fatalities<\/span> due to landslides.
\n13.17% of the country<\/span> is susceptible to landslides, and 4.75%<\/span>\u00a0is \u2018very highly susceptible’. Kerala is the most vulnerable state<\/span> with over 14%<\/span> of its land mass in the \u2018very high susceptibility\u2019 category.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"Landslide
Source- NDMA<\/figcaption><\/figure>\n

Recent Incidents in India:<\/strong> Some other incidents in India include the following- Kerala (2018), Himachal Pradesh (2018), Uttarakhand (2018), Tamenglong-Manipur (2018), and Kalikhola, Manipur (June 2017).<\/p>\n\n\n\n
Read More- National Landslide Susceptibility Map<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/a>What are the causes of landslides in India?<\/strong><\/span><\/h2>\n\n\n\n\n
Natural Causes<\/strong><\/td>\n\n
    \n
  1. Heavy Rainfall:<\/strong>\u00a0The occurrence of heavy or continuous rainfall may lead to heavy landslides in the areas of steep slopes. Water works as a lubricating agent<\/span> and loosens up the material<\/span>. For ex:<\/strong>\u00a0The 2013 Uttarakhand Cloudburst brought immense landslides in the region<\/span>.<\/li>\n
  2. Earthquakes:<\/strong>\u00a0The sudden shaking of earth\u2019s crust creates stress on materials resulting in their flow downwards. <\/span>For ex:<\/strong>\u00a0<\/span>Tectonically active Himalayas<\/span> enhance the probability of earthquakes, resulting in an increased vulnerability.<\/span><\/li>\n
  3. Nature of Rivers:<\/strong> The youthful and mighty rivers increase the downcutting of earth on the mountain slopes. <\/span>For ex:<\/strong>\u00a0The <\/span>increased flow in the Chaliyar river<\/span> resulted in heavy sediment erosion, resulting in the Wayanad landslide catastrophe.<\/span><\/li>\n<\/ol>\n<\/td>\n<\/tr>\n
Anthropogenic Causes<\/strong><\/td>\n\n
    \n
  1. Heavy Infrastructure Development:<\/strong>\u00a0The creation of roads, railways, dams, linear infrastructure development in the mountainous region, has resulted in increased landslides. For ex: <\/strong>The development of Konkan Railways in western ghats<\/span> is considered a significant reason behind the frequent occurrences of the disaster in the region.<\/li>\n
  2. Mining activities:<\/strong>\u00a0It involves removal of the surface of the earth for mineral exploration, which loosens the grip of material. <\/span>For ex:<\/strong>\u00a0<\/span>Iron ore<\/span>, <\/span>bauxite<\/span>, <\/span>manganese<\/span>, <\/span>chromite<\/span>, and <\/span>limestone mining<\/span> in the western ghats has increased the risks of this disaster.<\/span><\/li>\n
  3. Increased Deforestation:<\/strong>\u00a0The cutting down of trees for agricultural and industrial activities, loosens the soil grip and makes the region more vulnerable to landslides. <\/span>For ex:<\/strong>\u00a0<\/span>Plantation agriculture in Western ghats<\/span> has resulted in loss of native trees and increased the disaster risk.<\/span><\/li>\n
  4. Unsustainable Tourism:<\/strong> The rising tourist influx in the Himalayan region and Western Ghats puts greater pressure on land, as more infrastructure and amenities are needed to accommodate them. This leads to more construction and greater landslide risks.<\/span><\/li>\n
  5. Climate change:<\/strong>\u00a0Anthropogenic activities has accelerated the climate change events, leading to increased glacial melts and rainfall. <\/span>For ex:<\/strong>\u00a0<\/span>Warming of Arabian sea<\/span> has resulted in <\/span>increased rainfall in the Western Ghats region<\/span>, leading to enhanced landslides.<\/span><\/li>\n<\/ol>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    What are the Impacts of Landslides in India?<\/strong><\/span><\/h2>\n
      \n
    1. Loss of Lives:<\/strong> The most traumatizing impact of a landslide is the loss of precious human and animal lives. For e.g. In the Wayanad landslide,<\/span>\u00a0298 people died.<\/span><\/li>\n
    2. Economic Losses:<\/strong> Landslide leads to enhanced economic losses as, significant amount<\/span> is spent<\/span> on reconstructing the lost infrastructure<\/span>, rehabilitating the masses<\/span>, and providing relief support<\/span> to the impacted people.<\/li>\n
    3. Infrastructural Damage and restricted Movement:<\/strong>\u00a0The mud, rocks, and debris moving down the slope result in infrastructural damage to houses, buildings, roads and create a barrier on critical transportation routes<\/span>. This restricts the movement of goods and people.<\/li>\n
    4. Jeopardized Water Availability:<\/strong>\u00a0The accumulated mass of debris results in the blockage of a river by creating a Landslide dam<\/span>. It impairs the availability of water for nearby people.<\/li>\n
    5. Displacement and Migration:<\/strong> Landslides force communities to evacuate and migrate. This leads to social disruption<\/span> and psychological stress<\/span> among affected populations<\/li>\n<\/ol>\n

      <\/a>What initiatives have been taken by the Government to mitigate the risks due to landslides?<\/strong><\/span><\/h2>\n\n\n\n\n\n\n
      National Landslide Susceptibility Mapping (NLSM)<\/strong><\/td>\nGeological Survey of India initiated the National Landslide Susceptibility Mapping (NLSM) program in 2014 to map the landslide areas on a Macro Scale<\/span> (1:50,000). The goal is to map the 0.42 million sq. km landslide-prone areas<\/span> across the country.<\/td>\n<\/tr>\n
      National Landslide Risk Management Strategy (2019)<\/strong><\/td>\nIt addresses all the components of landslide disaster risk reduction<\/span> and management, which includes:
      \na. Hazard mapping, monitoring, and early warning system, awareness programs.
      \nb. Capacity building, training, regulations, and policies, stabilization and mitigation.<\/td>\n<\/tr>\n
      National Disaster Management Authority (NDMA) Guidelines on Landslide Hazard Management (2009)<\/strong><\/td>\nIt proposes measures that should be taken to avoid or mitigate the risk posed by landslide hazards. Some of the guidelines are as follows:
      \na. Delineating areas<\/span> susceptible to landslide hazards.
      \nb. Encouraging implementation of successful remediation<\/span> and mitigation technologies.
      \nc. Developing institutional capacity<\/span> and training<\/span> for geoscientists, engineers, and planners is necessary for the effective management.<\/td>\n<\/tr>\n
      National Institute of Disaster Management (NIDM)<\/strong><\/td>\nIt is a premier institute that provides capacity building support<\/span> to various National and State level agencies in the field of Disaster Management & Disaster Risk Reduction.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      <\/a>What are the challenges in implementation of measures proposed for landslide Mitigation?<\/strong><\/span><\/h2>\n
        \n
      1. Non implementation of Gadgil and Kasturirangan committee reports:<\/strong>\u00a0The Gadgil committee report proposed to regulate developmental activities<\/span> in the entire 1,60,000 sq km stretch of the Western Ghats<\/span>. K Kasturirangan report recommended demarcation of 37% of the Western Ghats as an ecologically sensitive area<\/span> (ESA) and complete ban on mining and quarrying in these protected zones. These reports have not been implemented with resistance by all states and parties across the political spectrum in the biodiverse region.<\/li>\n
      2. Lack of landslide mitigation plan:<\/strong>\u00a0Many States vulnerable to landslides including Kerala<\/span> lack landslide mitigation plan. These maps and plans help to explain the route a landslide can take once it has been triggered.<\/li>\n
      3. Insufficient Monitoring Systems:<\/strong>\u00a0Many regions lack effective monitoring and early warning systems, which are crucial for timely evacuation and disaster preparedness. The absence of real-time data<\/span> lead to increased casualties and damage during landslide events.<\/li>\n
      4. Policy and Regulatory Gaps:<\/strong>\u00a0Weak enforcement of land-use regulations<\/span> and building codes<\/span> often exacerbates vulnerability to landslides.<\/li>\n
      5. Low Community Awareness and Participation:<\/strong>\u00a0Low levels of public awareness regarding landslide risks and preparedness measures impede community involvement in disaster management.<\/li>\n<\/ol>\n

        <\/a>What Should be the Way Forward?<\/strong><\/span><\/h2>\n
          \n
        1. Drawing up of Route Maps:<\/strong>\u00a0Route maps help in marking out areas which should be out of bounds for settlements or any activities<\/span>. These maps also map out the routes that landslides are likely to take after they have been triggered. The route maps need to be drawn at the earliest to complement the susceptibility maps.<\/li>\n
        2. Proper Environment Impact Assessment (EIA):<\/strong> Proper implementation of EIA norms must be carried out before initiating mining or dam construction<\/span>, in the ecologically fragile mountainous regions.<\/li>\n
        3. Demarcation of ecologically sensitive areas in Western Ghats:<\/strong>\u00a0The panel headed by Sanjay Kumar<\/span> must finalise the draft notification on ecologically sensitive areas for the western Ghats. This will help in reducing engineering projects in ecologically sensitive areas.<\/li>\n
        4. Landslide Micro-zoning procedure:<\/strong>\u00a0There must be adoption of landslide micro zoning procedures<\/span> for mountainous and other highly vulnerable regions. This will help the states in restoring denuded flora and soil cover.<\/li>\n
        5. Involvement of locally trained manpower:<\/strong>\u00a0There should be involvement of locally available trained manpower to intensify the hazard reduction and public awareness programs.<\/li>\n<\/ol>\n\n\n\n
          Read More- The Indian Express<\/a><\/strong>
          \nUPSC Syllabus- GS 3- Disaster and its Management<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

          30th July this year marks the 1st anniversary of the calamitous Wayanad landslide that wreaked havoc in Kerala in 2024 and resulted in the loss of lives of 298 people. It was one of the biggest natural disaster in the country. According to experts, it is the biggest landslide-related disaster in the state in terms… Continue reading Wayanad Landslide- Causes, impact and management of Landslides in India- Explained Pointwise<\/span><\/a><\/p>\n","protected":false},"author":10391,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[130],"tags":[],"class_list":["post-343788","post","type-post","status-publish","format-standard","hentry","category-7-pm","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/343788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10391"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=343788"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/343788\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=343788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=343788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=343788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}