{"id":36857,"date":"2026-08-12T10:00:29","date_gmt":"2026-08-12T04:30:29","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=36857"},"modified":"2026-08-12T12:21:43","modified_gmt":"2026-08-12T06:51:43","slug":"cauvery-water-dispute","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/cauvery-water-dispute\/","title":{"rendered":"Cauvery Water Dispute, History, SC Verdict &#038; Latest News"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The <\/span><b>Cauvery Water Dispute<\/b><span style=\"font-weight: 400;\"> is one of India&#8217;s oldest and most complex inter-state river water disputes. It concerns the sharing of the waters of the <\/span><b>Cauvery River<\/b><span style=\"font-weight: 400;\"> among <\/span><b>Karnataka, Tamil Nadu, Kerala, and the Union Territory of Puducherry<\/b><span style=\"font-weight: 400;\">. The river is the lifeline for millions of people, supporting agriculture, drinking water supply, industries, and ecosystems across southern India.<\/span><\/p>\n<h2><b>Why in News?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><b>Cauvery Water Dispute<\/b><span style=\"font-weight: 400;\"> has resurfaced following renewed differences over Karnataka&#8217;s proposed <\/span><b>Mekedatu Balancing Reservoir Project<\/b><span style=\"font-weight: 400;\"> on the Cauvery River.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Recently, <\/span><b>Tamil Nadu Chief Minister C. Joseph Vijay<\/b><span style=\"font-weight: 400;\"> wrote to <\/span><a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/prime-minister\/\" target=\"_blank\"><b>Prime Minister<\/b><\/a> <a href=\"https:\/\/vajiramandravi.com\/current-affairs\/narendra-modi\/\" target=\"_blank\"><b>Narendra Modi<\/b><\/a><span style=\"font-weight: 400;\">, urging the Central Government to <\/span><b>ensure that no statutory or administrative approval is granted to the Mekedatu project unless it fully complies with the Cauvery Water Disputes Tribunal (CWDT) Award of 2007 and the Supreme Court&#8217;s 2018 judgment<\/b><span style=\"font-weight: 400;\"> on the sharing of Cauvery waters.<\/span><\/p>\n<h2><b>Cauvery Water Dispute History<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><b>Cauvery Water Dispute<\/b><span style=\"font-weight: 400;\"> has evolved over more than a century, beginning with colonial-era agreements and continuing through tribunal awards, Supreme Court judgments, and the establishment of institutional mechanisms for equitable water sharing.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>1892 Agreement:<\/b><span style=\"font-weight: 400;\"> Signed between the <\/span><b>Madras Presidency<\/b><span style=\"font-weight: 400;\"> and the <\/span><b>Princely State of Mysore<\/b><span style=\"font-weight: 400;\">, requiring Mysore to obtain prior consent before undertaking major irrigation projects.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>1924 Agreement:<\/b><span style=\"font-weight: 400;\"> Replaced the 1892 agreement, allowing the construction of the <\/span><b>Krishnarajasagar Dam<\/b><span style=\"font-weight: 400;\"> and <\/span><b>Mettur Dam<\/b><span style=\"font-weight: 400;\">; remained valid for <\/span><b>50 years<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>1974:<\/b><span style=\"font-weight: 400;\"> Karnataka considered the 1924 agreement to have expired, leading to fresh disagreements over water sharing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>1990:<\/b><span style=\"font-weight: 400;\"> The Central Government constituted the <\/span><b>Cauvery Water Disputes Tribunal (CWDT)<\/b><span style=\"font-weight: 400;\"> under the <\/span><b>Inter-State River Water Disputes Act, 1956<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>1991 Interim Award:<\/b><span style=\"font-weight: 400;\"> The Tribunal directed Karnataka to release a specified quantity of water to Tamil Nadu, triggering protests in both states.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>2007 Final Tribunal Award:<\/b><span style=\"font-weight: 400;\"> The CWDT allocated Cauvery waters among <\/span><b>Karnataka, Tamil Nadu, Kerala, and Puducherry<\/b><span style=\"font-weight: 400;\"> based on basin requirements.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>2013:<\/b><span style=\"font-weight: 400;\"> The Central Government notified the Tribunal&#8217;s final award in the Official Gazette, making it legally enforceable.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>2018 <\/b><a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/supreme-court-of-india\/\" target=\"_blank\"><b>Supreme Court<\/b><\/a><b> Judgment:<\/b><span style=\"font-weight: 400;\"> The Supreme Court modified the Tribunal&#8217;s allocation, increased Karnataka&#8217;s share by <\/span><b>14.75 TMC<\/b><span style=\"font-weight: 400;\">, and directed the establishment of the <\/span><b>Cauvery Water Management Authority (CWMA)<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>2018:<\/b><span style=\"font-weight: 400;\"> The <\/span><b>CWMA<\/b><span style=\"font-weight: 400;\"> and the <\/span><b>Cauvery Water Regulation Committee (CWRC)<\/b><span style=\"font-weight: 400;\"> were established to implement the water-sharing arrangement and monitor compliance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>2025-26:<\/b><span style=\"font-weight: 400;\"> The dispute resurfaced over Karnataka&#8217;s proposed <\/span><b>Mekedatu Balancing Reservoir Project<\/b><span style=\"font-weight: 400;\">, with Tamil Nadu seeking strict adherence to the <\/span><b>2007 Tribunal Award<\/b><span style=\"font-weight: 400;\"> and the <\/span><b>2018 Supreme Court judgment<\/b><span style=\"font-weight: 400;\"> before any approval is granted.<\/span><\/li>\n<\/ul>\n<h2><b>Supreme Court Judgment (2018) on Cauvery Water Dispute<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">In<\/span><b> February 2018<\/b><span style=\"font-weight: 400;\">, the <\/span><b>Supreme Court<\/b><span style=\"font-weight: 400;\"> delivered its final verdict on the <\/span><b>Cauvery Water Dispute<\/b><span style=\"font-weight: 400;\">, modifying the <\/span><b>2007 Cauvery Water Disputes Tribunal (CWDT) Award<\/b><span style=\"font-weight: 400;\"> and laying down a permanent framework for equitable water sharing among the basin states.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Karnataka&#8217;s allocation<\/b><span style=\"font-weight: 400;\"> increased by <\/span><b>14.75 TMC<\/b><span style=\"font-weight: 400;\">, raising its total share to <\/span><b>284.75 TMC<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Tamil Nadu&#8217;s allocation<\/b><span style=\"font-weight: 400;\"> reduced from <\/span><b>419 TMC to 404.25 TMC<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Kerala (30 TMC)<\/b><span style=\"font-weight: 400;\"> and <\/span><b>Puducherry (7 TMC)<\/b><span style=\"font-weight: 400;\"> retained their allocations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Directed Karnataka to ensure the annual release of <\/span><b>177.25 TMC<\/b><span style=\"font-weight: 400;\"> of water to Tamil Nadu at <\/span><b>Biligundlu<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recognised <\/span><b>Bengaluru&#8217;s growing drinking water needs<\/b><span style=\"font-weight: 400;\"> as a key reason for increasing Karnataka&#8217;s share.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Held that <\/span><b>inter-state river water is a national resource<\/b><span style=\"font-weight: 400;\"> and no state can claim exclusive ownership.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reaffirmed the principle of <\/span><b>equitable and reasonable utilisation<\/b><span style=\"font-weight: 400;\"> of inter-state river waters.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Directed the Central Government to establish the <\/span><b>Cauvery Water Management Authority (CWMA)<\/b><span style=\"font-weight: 400;\"> and <\/span><b>Cauvery Water Regulation Committee (CWRC)<\/b><span style=\"font-weight: 400;\"> for implementation and monitoring.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Declared the judgment <\/span><b>final and binding<\/b><span style=\"font-weight: 400;\">, providing the legal basis for future water-sharing and dispute resolution.<\/span><\/li>\n<\/ul>\n<h2><b>What is the Mekedatu Project?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><b>Mekedatu Project<\/b><span style=\"font-weight: 400;\"> is a proposed <\/span><b>balancing reservoir and drinking water project<\/b><span style=\"font-weight: 400;\"> on the <\/span><b>Cauvery River<\/b><span style=\"font-weight: 400;\"> near <\/span><b>Mekedatu in Ramanagara district, Karnataka<\/b><span style=\"font-weight: 400;\">. The project is being developed by the <\/span><b>Government of Karnataka<\/b><span style=\"font-weight: 400;\"> to store excess monsoon water and meet the growing drinking water needs of <\/span><b>Bengaluru<\/b><span style=\"font-weight: 400;\"> and nearby regions.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Location:<\/b><span style=\"font-weight: 400;\"> Mekedatu, Ramanagara district, Karnataka, on the Cauvery River.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Purpose:<\/b><span style=\"font-weight: 400;\"> To provide <\/span><b>drinking water<\/b><span style=\"font-weight: 400;\">, regulate river flow, and generate <\/span><b>hydroelectric power<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Implementing Agency:<\/b><span style=\"font-weight: 400;\"> Government of Karnataka.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Storage Capacity:<\/b><span style=\"font-weight: 400;\"> Proposed reservoir with a storage capacity of about <\/span><b>67.16 TMC (Thousand Million Cubic Feet)<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Drinking Water Supply:<\/b><span style=\"font-weight: 400;\"> Intended to supply drinking water to <\/span><b>Bengaluru and surrounding areas<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Hydropower Generation:<\/b><span style=\"font-weight: 400;\"> Proposed installed capacity of around <\/span><b>400 MW<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Estimated Cost:<\/b><span style=\"font-weight: 400;\"> Approximately <\/span><b>\u20b99,000 crore<\/b><span style=\"font-weight: 400;\"> (subject to revision).<\/span><\/li>\n<\/ul>\n<h2><b>Cauvery Water Management Authority (CWMA)<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><b>Cauvery Water Management Authority (CWMA)<\/b><span style=\"font-weight: 400;\"> is a <\/span><b>statutory body<\/b><span style=\"font-weight: 400;\"> established by the <\/span><b>Central Government in June 2018<\/b><span style=\"font-weight: 400;\"> to implement the <\/span><b>Supreme Court&#8217;s 2018 judgment<\/b><span style=\"font-weight: 400;\"> and ensure the equitable sharing of Cauvery River waters among the basin states. <\/span><b>K<\/b><span style=\"font-weight: 400;\">ey Functions of the CWMA are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Implements<\/b><span style=\"font-weight: 400;\"> the <\/span><b>Cauvery Water Disputes Tribunal (CWDT) Award<\/b><span style=\"font-weight: 400;\"> and the <\/span><b>Supreme Court&#8217;s 2018 judgment<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Monitors<\/b><span style=\"font-weight: 400;\"> water levels in reservoirs across the Cauvery basin.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ensures<\/b><span style=\"font-weight: 400;\"> monthly water releases among Karnataka, Tamil Nadu, Kerala, and Puducherry as per the approved schedule.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Coordinates<\/b><span style=\"font-weight: 400;\"> with the <\/span><b>Cauvery Water Regulation Committee (CWRC)<\/b><span style=\"font-weight: 400;\"> for monitoring rainfall, inflows, and reservoir storage.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Resolves<\/b><span style=\"font-weight: 400;\"> operational issues related to water sharing among the basin states.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Collects and analyses<\/b><span style=\"font-weight: 400;\"> hydrological and meteorological data for effective water management.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Submits reports<\/b><span style=\"font-weight: 400;\"> and recommendations to the Central Government on Cauvery water management.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Promotes compliance<\/b><span style=\"font-weight: 400;\"> with legal and institutional mechanisms to reduce inter-state disputes.<\/span><\/li>\n<\/ul>\n<h2><b>Constitutional and Legal Framework<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><b>Constitutional and Legal Framework<\/b><span style=\"font-weight: 400;\"> governing the Cauvery Water Dispute provides the basis for adjudicating inter-state river water disputes and ensuring equitable sharing of river waters among the basin states.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Article 262:<\/b><span style=\"font-weight: 400;\"> Empowers Parliament to enact laws for the adjudication of inter-state river water disputes and permits it to exclude the jurisdiction of courts in such matters.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Entry 56 of the Union List (<\/b><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/7th-schedule-of-indian-constitution\/\" target=\"_blank\"><b>Seventh Schedule<\/b><\/a><b>):<\/b><span style=\"font-weight: 400;\"> Authorises the Central Government to regulate and develop inter-state rivers and river valleys in the public interest.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Inter-State River Water Disputes Act, 1956:<\/b><span style=\"font-weight: 400;\"> Provides for the constitution of Water Disputes Tribunals to resolve disputes over inter-state rivers; the <\/span><b>Cauvery Water Disputes Tribunal (CWDT)<\/b><span style=\"font-weight: 400;\"> was established under this Act in <\/span><b>1990<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>River Boards Act, 1956:<\/b><span style=\"font-weight: 400;\"> Enables the establishment of River Boards for the regulation and development of inter-state river basins, though no River Board has been constituted under the Act.<\/span><\/li>\n<\/ul>\n<h2><b>About the Cauvery River<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The <\/span><a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/kaveri-river-system\/\" target=\"_blank\"><b>Cauvery River<\/b><\/a><span style=\"font-weight: 400;\">, often called the <\/span><b>&#8220;Ganga of South India&#8221;<\/b><span style=\"font-weight: 400;\">, is one of the most important east-flowing rivers of peninsular India. It is a major source of irrigation, drinking water, and hydropower for the southern states.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Origin:<\/b><span style=\"font-weight: 400;\"> Rises at <\/span><b>Talakaveri<\/b><span style=\"font-weight: 400;\"> in the <\/span><b>Brahmagiri Hills<\/b><span style=\"font-weight: 400;\"> of the <\/span><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/western-ghats\/\" target=\"_blank\"><b>Western Ghats<\/b><\/a><span style=\"font-weight: 400;\">, Kodagu district, Karnataka.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Length:<\/b><span style=\"font-weight: 400;\"> Flows for approximately <\/span><b>800 km<\/b><span style=\"font-weight: 400;\"> before emptying into the <\/span><b>Bay of Bengal<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Basin States:<\/b><span style=\"font-weight: 400;\"> The river basin extends across <\/span><b>Karnataka, Tamil Nadu, Kerala, and the Union Territory of Puducherry<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Drainage Area:<\/b><span style=\"font-weight: 400;\"> Covers about <\/span><b>81,155 sq. km<\/b><span style=\"font-weight: 400;\">, making it one of the major river basins in southern India.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Major Tributaries:<\/b> <b>Kabini, Hemavati, Harangi, Shimsha, Arkavathi, Bhavani, Amaravati, and Noyyal<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Major Dams:<\/b> <b>Krishnarajasagar (KRS), Mettur Dam, Kabini Dam, Hemavati Dam, and Harangi Dam<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Mouth:<\/b><span style=\"font-weight: 400;\"> Empties into the <\/span><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/bay-of-bengal\/\" target=\"_blank\"><b>Bay of Bengal<\/b><\/a><span style=\"font-weight: 400;\"> near <\/span><b>Poompuhar (Kaveripoompattinam), Tamil Nadu<\/b><span style=\"font-weight: 400;\">, forming a fertile delta.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Economic Importance:<\/b><span style=\"font-weight: 400;\"> Supports <\/span><b>agriculture, drinking water supply, hydroelectric power generation, fisheries, and industries<\/b><span style=\"font-weight: 400;\"> across the basin states.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Cauvery is often called the Dakshin Ganga and considered one of the sacred rivers of India.<\/p>\n","protected":false},"author":27,"featured_media":116068,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[786],"tags":[9095,9094],"class_list":["post-36857","post","type-post","status-publish","format-standard","has-post-thumbnail","category-general-studies","tag-cauvery-dispute","tag-cauvery-water-dispute","no-featured-image-padding"],"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/36857","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=36857"}],"version-history":[{"count":3,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/36857\/revisions"}],"predecessor-version":[{"id":116079,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/36857\/revisions\/116079"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/116068"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=36857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=36857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=36857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}