{"id":58948,"date":"2025-11-11T20:06:33","date_gmt":"2025-11-11T14:36:33","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=58948"},"modified":"2025-11-11T20:07:20","modified_gmt":"2025-11-11T14:37:20","slug":"river-bank-erosion","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/11-11-2025\/river-bank-erosion","title":{"rendered":"River Bank Erosion"},"content":{"rendered":"\n<p><strong>Syllabus: GS1\/Geography<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <strong>Brahmaputra, Teesta, and Dharla rivers<\/strong> have become<strong> unpredictable, eroding land faster than ever before.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>About Riverbank Erosion<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Riverbank erosion<\/strong> is the wearing away of the banks of a river due to the continuous action of flowing water.\u00a0<\/li>\n\n\n\n<li>It is a natural geomorphological process but <strong>can be accelerated by human activities or environmental changes.<\/strong><\/li>\n\n\n\n<li>When water flows along a river channel, it <strong>exerts shear stress on the riverbanks.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>Over time, this force removes soil, sand, and rock particles from the bank, leading to <strong>undercutting, collapse, and retreat of the riverbank.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img data-dominant-color=\"bdb490\" data-has-transparency=\"false\" loading=\"lazy\" decoding=\"async\" width=\"887\" height=\"613\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/11\/River-Bank-Erosion.webp\" alt=\"\" class=\"not-transparent wp-image-58950\" style=\"--dominant-color: #bdb490; width:520px;height:auto\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/11\/River-Bank-Erosion.webp 887w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/11\/River-Bank-Erosion-300x207.webp 300w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2025\/11\/River-Bank-Erosion-768x531.webp 768w\" sizes=\"auto, (max-width: 887px) 100vw, 887px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Causes of Riverbank Erosion<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Natural Causes<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Strong river currents:<\/strong> Fast-flowing water erodes the outer banks of bends (meanders).<\/li>\n\n\n\n<li><strong>Floods:<\/strong> High water volume and velocity during floods intensify erosion.<\/li>\n\n\n\n<li><strong>Soil composition:<\/strong> Loose or sandy soils erode more easily.<\/li>\n\n\n\n<li><strong>Lack of vegetation:<\/strong> Roots help bind the soil; their absence makes banks fragile.<\/li>\n\n\n\n<li><strong>River meandering:<\/strong> Continuous shifting of river channels causes lateral erosion.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Human-Induced Causes:\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>Deforestation near riverbanks.<\/li>\n\n\n\n<li>Sand mining and gravel extraction.<\/li>\n\n\n\n<li>Construction of dams and embankments altering natural flow.<\/li>\n\n\n\n<li>Overgrazing or cultivation close to the river edge.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Impacts<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Loss of agricultural land and livelihoods.<\/li>\n\n\n\n<li>Displacement of people, which is also a major problem in states like Assam and West Bengal.<\/li>\n\n\n\n<li>Damage to infrastructure such as roads, bridges, and embankments.<\/li>\n\n\n\n<li>Sedimentation downstream, affecting navigation and aquatic life.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Control and Mitigation Measures<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bioengineering methods: <\/strong>planting grasses, shrubs, and trees to stabilize banks.<\/li>\n\n\n\n<li>Construction of revetments, spurs, and gabion walls.<\/li>\n\n\n\n<li>River training and dredging to manage flow.<\/li>\n\n\n\n<li>Community-based riverbank management and land-use planning.<\/li>\n<\/ul>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/epaper.thehindu.com\/ccidist-ws\/th\/th_international\/issues\/155904\/OPS\/G94F44M4J.1+G2NF5B7UR.1.html\" target=\"_blank\" rel=\"noopener\"><strong>TH<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>Context<\/strong><\/p>\n<li class=\"ms-5\">The Brahmaputra, Teesta, and Dharla rivers have become unpredictable, eroding land faster than ever before.<\/li>\n<p><\/p>\n<p><strong>About Riverbank Erosion<\/strong><\/p>\n<li class=\"ms-5\">Riverbank erosion is the wearing away of the banks of a river due to the continuous action of flowing water.\u00a0<\/li>\n<li class=\"ms-5\">It is a natural geomorphological process but can be accelerated by human activities or environmental changes.<\/li>\n<li class=\"ms-5\">When water flows along a river channel, it exerts shear stress on the riverbanks.\u00a0<\/li>\n<p><a href=\"https:\/\/www.nextias.com\/ca\/current-affairs\/11-11-2025\/river-bank-erosion\" class=\"btn btn-primary btn-sm float-end\">Read\u00a0More<\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-58948","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/58948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=58948"}],"version-history":[{"count":3,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/58948\/revisions"}],"predecessor-version":[{"id":58981,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/58948\/revisions\/58981"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=58948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=58948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=58948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}