{"id":375624,"date":"2026-11-13T20:57:52","date_gmt":"2026-11-13T15:27:52","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=375624"},"modified":"2026-11-13T20:57:52","modified_gmt":"2026-11-13T15:27:52","slug":"why-siang-upper-multipurpose-project-has-been-contentious","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/why-siang-upper-multipurpose-project-has-been-contentious\/","title":{"rendered":"Why Siang Upper Multipurpose Project Has Been Contentious"},"content":{"rendered":"

UPSC Syllabus: Gs Paper 3-<\/strong>Infrastructure<\/p>\n

Introduction<\/strong><\/h2>\n

The Siang Upper Multipurpose Project (SUMP)<\/strong> in Arunachal Pradesh has triggered protests by the indigenous Adi community over displacement, ecological damage and inadequate consultation. The government views it as important for water security, flood management and strategic interests against China<\/strong>. Local communities, however, fear losing ancestral lands, traditional livelihoods and cultural identity. The controversy raises an important question about how India can pursue national development while protecting the environment and respecting the rights of indigenous communities.<\/p>\n

Overview of the Siang Upper Multipurpose Project<\/strong><\/h2>\n
    \n
  1. Nature and Location: <\/strong>SUMP is a proposed multipurpose storage dam on the Siang River<\/strong>, the Indian stretch of the Yarlung Tsangpo, near Geku village in Upper Siang district.<\/li>\n
  2. Implementing Agency and Project Origin: <\/strong>The National Hydroelectric Power Corporation (NHPC)<\/strong> is the implementing agency, and the project was declared a national project in 2008. NITI Aayog proposed a 10,000 MW<\/strong> multipurpose storage dam on the river in 2017.<\/li>\n
  3. Power Generation and Storage Capacity: <\/strong>The estimated capacity is 11,000\u201311,200 MW<\/strong>, with a proposed dam height of 280\u2013300 metres<\/strong> and live storage of approximately 9.2 billion cubic metres<\/strong>.<\/li>\n
  4. Multipurpose Design: <\/strong>The project combines hydropower generation, water storage and flood regulation in one reservoir. It also seeks to merge two earlier projects to reduce overall costs.<\/li>\n
  5. Present Project Status: <\/strong>SUMP remains at the Pre-Feasibility Report (PFR) stage<\/strong>, an early assessment of technical feasibility and safety. Detailed studies and statutory clearances are still required.<\/li>\n
  6. Identified Sites and Approval Requirements: <\/strong>Parong, Ditte Dime and Uggeng are among the identified sites. Required work includes one year of baseline data<\/strong>, impact studies, dam-break analysis and a disaster management plan.<\/li>\n<\/ol>\n

    Significance of the Siang Upper Multipurpose Project<\/strong><\/h2>\n
      \n
    1. Strengthening India’s Hydropower Potential: <\/strong>The Northeast accounts for nearly 40% of India’s hydropower potential<\/strong>, making SUMP relevant to regional energy infrastructure and renewable electricity generation.<\/li>\n
    2. Flood Control and River Regulation: <\/strong>The reservoir could regulate river flows and reduce flooding and erosion in Arunachal Pradesh and Assam. It is also expected to support more consistent downstream water flows.<\/li>\n
    3. Regional Energy and Economic Development: <\/strong>The project could help stabilise peak electricity shortages in northeastern and eastern grids and provide approximately 12% free power to Arunachal Pradesh<\/strong>. It could also create jobs and improve infrastructure.<\/li>\n
    4. Strategic Response to China’s Medog Dam: <\/strong>China’s proposed 60,000 MW Medog Dam<\/strong> on the Yarlung Tsangpo has raised concerns about upstream flow manipulation, sudden releases and downstream flood risks.<\/li>\n
    5. Strengthening India’s Water Security: <\/strong>SUMP’s proposed 9.2 billion cubic metres of live storage<\/strong> could help cushion sudden upstream releases. This may improve India’s ability to regulate flows in the Brahmaputra basin.<\/li>\n
    6. Hydrological Sovereignty and Hydro-diplomacy: <\/strong>A large storage dam on the Siang could strengthen India’s downstream water interests and establish prior-use rights. It is also viewed as a strategic response to China’s upstream hydropower development.<\/li>\n
    7. Water as a Strategic Instrument: <\/strong>Upstream countries can use dams and river-flow regulation to influence downstream states. Water control can create regional tensions even when it is not the direct cause of armed conflict.<\/li>\n
    8. International Examples of Transboundary Water Disputes: <\/strong>Ethiopia’s Grand Ethiopian Renaissance Dam<\/strong>, inaugurated in 2025, has faced opposition from Egypt and Sudan over reservoir filling and operation. The Indus Waters Treaty (1960)<\/strong> also illustrates tensions over shared rivers between India and Pakistan.<\/li>\n<\/ol>\n

      Major Concerns and Reasons Behind Opposition<\/strong><\/h2>\n
        \n
      1. Displacement of Indigenous Communities: <\/strong>Adi villagers claim that at least 40 villages would be affected, including 27 facing submergence<\/strong>. This could displace communities and disrupt established social and economic life.<\/li>\n
      2. Loss of Agricultural Livelihoods: <\/strong>Submergence of paddy fields and orange orchards could destroy traditional agriculture. This would weaken the livelihoods of affected households.<\/li>\n
      3. Threat to Cultural and Religious Heritage: <\/strong>Submergence of ancestral burial grounds and disruption of sacred river practices could damage Adi cultural identity. The Adi Bane Kebang (ABK)<\/strong>, the apex body of the Adi community, regards the Siang River as Ane Siang<\/em>, meaning the Mother Siang<\/strong>, and considers it sacred.<\/li>\n
      4. Alleged Violation of Community Consent: <\/strong>Villagers allege that signatures for Pre-Feasibility Report (PFR)-related Memoranda of Understanding (MoUs)<\/strong> were obtained through pressure, deception and threats to withhold welfare benefits. They stress that consent for a survey is not consent for the dam.<\/li>\n
      5. Disagreement over the Development Package: <\/strong>An MoU involving two Pangkang residents provided a \u20b95 crore package over three years<\/strong>. Other villagers opposed the agreement and questioned its legitimacy because wider community consultation was lacking.<\/li>\n
      6. Threat to Biodiversity and Forest Ecosystems: <\/strong>The Siang basin covers over 15,000 square kilometres, with more than 82% forest cover<\/strong>. Its biodiversity-rich landscape supports numerous rare, endangered and threatened species.<\/li>\n
      7. Disruption of Riverine Ecosystems: <\/strong>Large reservoirs can cause sediment build-up, habitat flooding, forest fragmentation and altered river flows. They can also obstruct fish migration, reduce genetic diversity and affect wetlands and downstream agriculture.<\/li>\n
      8. Seismic Vulnerability and Dam Safety: <\/strong>The eastern Himalayan region falls under Seismic Zone V<\/strong>, where reservoir-induced earthquakes and active tectonic conditions raise safety concerns. A dam failure could cause catastrophic downstream destruction.<\/li>\n
      9. Climate Change and GLOF Risks: Glacial Lake Outburst Floods (GLOFs)<\/strong> and glacial retreat could increase sudden water surges and sediment inflows. The 2021 Uttarakhand glacier burst damaged the Tapovan-Vishnugad hydropower project, illustrating Himalayan infrastructure risks.<\/li>\n
      10. Escalating Community Protests: <\/strong>Alleged police action injured 54 elderly protesters on October 4<\/strong>, and activists were arrested on October 9. Violence during a Pasighat march on October 23 led to the burning of NHPC premises.<\/li>\n<\/ol>\n

        Challenges in Balancing Strategic Interests with Socio-Ecological Protection<\/strong><\/h2>\n
          \n
        1. Balancing National Security with Local Interests: <\/strong>India’s concerns over China’s upstream infrastructure create strategic pressure to develop SUMP. Some villagers question why local communities should bear the cost of unresolved water-sharing issues with China.<\/li>\n
        2. Weaknesses in Environmental Impact Assessment: <\/strong>The Cumulative Impact Assessment (CIA)<\/strong> of the Siang basin, conducted in 2013, faced criticism over insufficient field data. This limits its usefulness for comprehensive environmental and upstream-downstream planning.<\/li>\n
        3. Gaps in Disaster Risk Assessment: <\/strong>Hydropower appraisal needs stronger Himalayan-specific risk protocols. These should cover reservoir-induced seismicity, dam safety, GLOF modelling and changing river conditions.<\/li>\n
        4. Institutional Coordination and Regulatory Gaps: <\/strong>Project planning requires coordination among the Ministry of Environment, Forest and Climate Change (MoEFCC)<\/strong>, Central Water Commission (CWC)<\/strong>, National Disaster Management Authority (NDMA)<\/strong> and Ministry of Tribal Affairs (MoTA)<\/strong>.<\/li>\n
        5. Protection of Indigenous Rights: <\/strong>The United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP), 2008<\/strong>, recognises indigenous rights through Articles 10, 19 and 32. The Forest Rights Act (FRA), 2006<\/strong> also provides a framework for recognising forest rights; PESA’s applicability to the project area needs verification.<\/li>\n
        6. Trust Deficit and Conflict over Decision-making: <\/strong>Allegations of inadequate consultation, deployment of Central Armed Police Forces (CAPF)<\/strong> and disagreement over the PFR have weakened trust. The Adi community has demanded withdrawal of the forces and scrapping of SUMP.<\/li>\n
        7. Uncertainty over Transboundary Water Management: <\/strong>The absence of a water-sharing treaty with China adds to concerns about upstream infrastructure. The Indus Waters Treaty dispute also shows the difficulty of maintaining cooperation over shared rivers.<\/li>\n<\/ol>\n

          Way Forward<\/strong><\/h2>\n
            \n
          1. Comprehensive Environmental Assessment: <\/strong>Conduct independent environmental and social assessments using reliable baseline data and detailed field studies. Cumulative assessments should examine the combined effects of hydropower projects across the Siang basin.<\/li>\n
          2. Strengthening Multi-Agency Coordination: <\/strong>Improve coordination among the Ministry of Environment, Forest and Climate Change (MoEFCC), Central Water Commission (CWC), National Disaster Management Authority (NDMA) and Ministry of Tribal Affairs (MoTA).This would integrate environmental clearances, hydrological appraisal, disaster management and tribal rights into project planning.<\/li>\n
          3. Strengthening Disaster Preparedness: <\/strong>Include reservoir-induced seismicity assessments, dam-break analysis and GLOF modelling in feasibility studies. Himalayan-specific disaster risk protocols should form an essential part of hydropower appraisal.<\/li>\n
          4. Sustainable and Modular Infrastructure: <\/strong>Examine smaller modular storage units and alternative designs instead of relying entirely on one mega-dam. These options could reduce displacement and ecological risks while supporting adaptive management.<\/li>\n
          5. Climate Resilience and Ecological Restoration: <\/strong>Promote habitat restoration, biodiversity conservation and monitoring of river ecosystems. Hydropower designs must account for extreme surges, changing river flows and increased sediment loads.<\/li>\n
          6. Community-based Participation: <\/strong>Ensure Free, Prior and Informed Consent (FPIC)<\/strong> through meaningful Gram Sabha consultations. Traditional institutions such as the ABK should participate in project planning and monitoring.<\/li>\n
          7. Transparent and Inclusive Decision-making: <\/strong>Disclose drilling results, environmental assessments and project risks. Promote dialogue and joint decisions on rehabilitation, livelihood protection and equitable sharing of project benefits.<\/li>\n
          8. Diversifying the Renewable Energy Mix: <\/strong>Explore solar, wind and geothermal energy alongside hydropower. India’s target of 500 GW of non-fossil energy capacity by 2030<\/strong> supports a diversified clean-energy approach.<\/li>\n<\/ol>\n

            Conclusion<\/strong><\/p>\n

            The Siang Upper Multipurpose Project reflects the challenge of balancing national security and energy needs<\/strong> with environmental protection and indigenous rights<\/strong>. Its future depends on sound assessments, climate-resilient planning and meaningful community participation. Respecting ecological limits and local rights can help make Himalayan hydropower development more sustainable and inclusive.<\/p>\n

            Question for practice:<\/strong><\/p>\n

            Examine the significance of the Siang Upper Multipurpose Project and the challenges involved in balancing strategic interests with environmental protection and the rights of indigenous communities.<\/p>\n

            Source: <\/strong>The Hindu<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

            UPSC Syllabus: Gs Paper 3-Infrastructure Introduction The Siang Upper Multipurpose Project (SUMP) in Arunachal Pradesh has triggered protests by the indigenous Adi community over displacement, ecological damage and inadequate consultation. The government views it as important for water security, flood management and strategic interests against China. Local communities, however, fear losing ancestral lands, traditional livelihoods… Continue reading Why Siang Upper Multipurpose Project Has Been Contentious<\/span><\/a><\/p>\n","protected":false},"author":10320,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1230],"tags":[216,299,10498],"class_list":["post-375624","post","type-post","status-publish","format-standard","hentry","category-9-pm-daily-articles","tag-gs-paper-3","tag-infrastructure","tag-the-hindu","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/375624","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\/10320"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=375624"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/375624\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=375624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=375624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=375624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}