{"id":21085,"date":"2025-06-12T16:59:58","date_gmt":"2025-06-12T14:59:58","guid":{"rendered":"https:\/\/www.ern.org\/?page_id=21085"},"modified":"2026-06-22T10:48:04","modified_gmt":"2026-06-22T08:48:04","slug":"romanche-archive-fonctionnement","status":"publish","type":"page","link":"https:\/\/www.ern.org\/fr\/romanche-archive-fonctionnement\/","title":{"rendered":"Romanche archive fonctionnement"},"content":{"rendered":"<div  class='flex_column av-mh3uzml-2d51a2e590f656626eeb6c56a57dd447 av_two_third  avia-builder-el-0  el_before_av_one_third  avia-builder-el-first  first flex_column_div  '     ><section  class='av_textblock_section av-ly2gs0t-ab797f0b13e1a8b7b5dceb5ee69227e1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h2><a name=\"historique\"><\/a>HISTORIQUE ET FAITS MARQUANTS AUTOUR DU PROJET DE LA MOYENNE ROMANCHE<\/h2>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-irqtmkd-4387328afaf27810ba40e0323f1fc115 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4><\/h4>\n<p>Cette chronologie pr\u00e9sente toutes des \u00e9tapes cl\u00e9s importantes, de la d\u00e9cision de renouveler ou non les concessions, la cr\u00e9ation du nouvel ouvrage, les d\u00e9mant\u00e8lements et la renaturation de la vall\u00e9e.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-119g7ct-1d5aac15bbdd89e095426d2cc1828093\">\n#top .hr.hr-invisible.av-119g7ct-1d5aac15bbdd89e095426d2cc1828093{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-119g7ct-1d5aac15bbdd89e095426d2cc1828093 hr-invisible  avia-builder-el-3  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  id=\"sechilienne\"  class='av_textblock_section av-q0pqbh-ed50a442634f179315636038d10232e1 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4><\/h4>\n<h3>&gt;&gt; Chronologie des grandes \u00e9tapes, d\u00e9cisions et faits marquants du d\u00e9mant\u00e8lement du barrage de S\u00e9chilienne<\/h3>\n<h3><strong>2009<\/strong><\/h3>\n<p>L&rsquo;\u00c9tat acquiert l&rsquo;ensemble des ouvrages li\u00e9s au fonctionnement de l&rsquo;usine hydro\u00e9lectrique de Noyer Chut, y compris le canal d&rsquo;amen\u00e9e et le barrage de S\u00e9chilienne, dans le cadre des mesures de pr\u00e9vention des risques li\u00e9s aux \u00e9boulements des Ruines de S\u00e9chilienne ainsi que pour r\u00e9pondre au besoin de r\u00e9tablir la continuit\u00e9 \u00e9cologique du cours d&rsquo;eau.<\/p>\n<h3><strong>Entre 2010 et 2013<\/strong><\/h3>\n<p>Les premi\u00e8res phases du d\u00e9mant\u00e8lement sont lanc\u00e9es. La DDT (Direction D\u00e9partementale des Territoires) de l&rsquo;Is\u00e8re proc\u00e8de \u00e0 la d\u00e9molition de l&rsquo;usine hydro\u00e9lectrique de Noyer Chut, au comblement du canal d&rsquo;amen\u00e9e et \u00e0 la d\u00e9pose des deux vannes segments qui r\u00e9glaient le niveau du plan d&rsquo;eau du barrage de S\u00e9chilienne car elles ne produisaient plus d\u2019\u00e9lectricit\u00e9 et repr\u00e9sentaient un risque de fermeture accidentelle.<\/p>\n<h3><strong>2016<\/strong><\/h3>\n<p>En juin, l&rsquo;autorit\u00e9 environnementale du CGEDD (Conseil G\u00e9n\u00e9ral de l&rsquo;Environnement et du D\u00e9veloppement Durable) rend son avis sur le projet de d\u00e9mant\u00e8lement final du barrage. Elle a soulign\u00e9 que le principal objectif \u00e9tait le r\u00e9tablissement de la continuit\u00e9 \u00e9cologique de la Romanche, notamment par l&rsquo;effacement du seuil et la suppression des ouvrages annexes devenus inutiles. L&rsquo;avis a \u00e9galement relev\u00e9 des enjeux environnementaux tels que la libre circulation piscicole, les impacts sur l&rsquo;\u00e9coulement des crues et le transit s\u00e9dimentaire.<\/p>\n<h3><strong>2018<\/strong><\/h3>\n<p>Les travaux de d\u00e9mant\u00e8lement du barrage sont termin\u00e9s.<\/p>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-l6yj17h-ef671385f0d22a0d3affc5f7025f1222\">\n.flex_column.av-l6yj17h-ef671385f0d22a0d3affc5f7025f1222{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-l6yj17h-ef671385f0d22a0d3affc5f7025f1222 av_one_third  avia-builder-el-5  el_after_av_two_third  el_before_av_two_third  flex_column_div av-zero-column-padding  '     ><p><div  class='avia-button-wrap av-jerivh9-22835ce0ba42da31ff41e33bceb3a2bb-wrap avia-button-center  avia-builder-el-6  el_before_av_hr  avia-builder-el-first '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jerivh9-22835ce0ba42da31ff41e33bceb3a2bb\">\n#top #wrap_all .avia-button.av-jerivh9-22835ce0ba42da31ff41e33bceb3a2bb:hover{\ncolor:white;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-jerivh9-22835ce0ba42da31ff41e33bceb3a2bb:hover .avia-svg-icon svg:first-child{\nfill:white;\nstroke:white;\n}\n<\/style>\n<a href='https:\/\/www.ern.org\/fr\/romanche-reconfiguration-et-effacements\/'  class='avia-button av-jerivh9-22835ce0ba42da31ff41e33bceb3a2bb av-link-btn avia-icon_select-no avia-size-large avia-position-center avia-color-theme-color avia-font-color-theme-color'   aria-label=\"Retour \u00e0 la page d\u2019accueil du projet\"><span class='avia_iconbox_title' >Retour \u00e0 la page d\u2019accueil du projet<\/span><span class='avia_button_background avia-button avia-color-theme-color-highlight' ><\/span><\/a><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mbjhdy0f-6ca9f7aaca81923b84c6687585fb0253\">\n#top .hr.hr-invisible.av-mbjhdy0f-6ca9f7aaca81923b84c6687585fb0253{\nheight:80px;\n}\n<\/style>\n<div  class='hr av-mbjhdy0f-6ca9f7aaca81923b84c6687585fb0253 hr-invisible  avia-builder-el-7  el_after_av_button  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-10h3yyl-e410da12c1478e75ee883c28f62b3943 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h5>Le barrage de S\u00e9chilienne<\/h5>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/05\/Timeline-Sechilienne.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/05\/Timeline-Sechilienne.png\" alt=\"\" width=\"1186\" height=\"535\" \/><\/a><\/p>\n<p>\u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<h5><\/h5>\n<p>&#8211; Mise en service : 1917<br \/>\n&#8211; Fin de service : 1946<br \/>\n&#8211; D\u00e9mant\u00e8lement : 2018<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mcyi59-2e23fa0bbd16b27f04193840f7ecac8c\">\n#top .hr.hr-invisible.av-mcyi59-2e23fa0bbd16b27f04193840f7ecac8c{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-mcyi59-2e23fa0bbd16b27f04193840f7ecac8c hr-invisible  avia-builder-el-9  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-11idpfh-3100d948ceebbd78415d95569e2ba23c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/renat-VF.png\" width=\"783\" height=\"482\" \/><br \/>\nRenaturation de la vall\u00e9e de la Romanche \u00a9Roberto EPPLE<\/p>\n<h5><\/h5>\n<\/div><\/section><\/p><\/div><div  class='flex_column av-40hbjbx-968cb4694417dede87490099d06bceb2 av_two_third  avia-builder-el-11  el_after_av_one_third  el_before_av_one_third  first flex_column_div  column-top-margin'     ><section  id=\"romanche\"  class='av_textblock_section av-33e1b0d-691a3c2912bc0a035b9072e2364759c6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h4><\/h4>\n<h3>&gt;&gt; Chronologie des grandes \u00e9tapes, d\u00e9cisions et faits marquants des arasements des barrages et des centrales du projet Romanche-Gavet<\/h3>\n<h3><strong>2001<\/strong><\/h3>\n<p>En 2001, EDF souhaite de renouveler la concession de la chaine d\u2019usine entre Gavet et Livet. Deux options sont \u00e9tudi\u00e9es : moderniser les six ouvrages existants ou reconfigurer l\u2019ensemble. Apr\u00e8s analyses, la reconfiguration est choisie.<\/p>\n<h3>2010<\/h3>\n<p>Le projet Romanche- Gavet fait partie de la \u00abConvention d\u2019engagements pour le d\u00e9veloppement d\u2019une hydro\u00e9lectricit\u00e9 durable en coh\u00e9rence avec la restauration des milieux aquatiques\u00bb sign\u00e9e en juin 2010 par EDF<br \/>\ndans le cadre du Grenelle de l\u2019Environnement.<\/p>\n<p>Le 31 d\u00e9cembre, le Journal officiel publie le d\u00e9cret attribuant \u00e0 EDF la concession de la future centrale hydro\u00e9lectrique de Romanche-Gavet pour une dur\u00e9e de 60 ans. Au printemps, les travaux de construction de la centrale hydro\u00e9lectrique de Gavet commencent.<\/p>\n<h3><strong>2012<\/strong><\/h3>\n<p>D\u00e9but de la construction du barrage prise d\u2019eau du Livet<\/p>\n<h3><strong>2013<\/strong><\/h3>\n<p>Un \u00e9boulement sur le chantier interrompt les travaux. Des \u00e9tudes g\u00e9ologiques et des travaux de s\u00e9curisation ont \u00e9t\u00e9 r\u00e9alis\u00e9s avant la reprise des activit\u00e9s.<\/p>\n<h3><strong>2015<\/strong><\/h3>\n<p>Les travaux reprennent apr\u00e8s les mesures de s\u00e9curisation. La construction du barrage de la prise d\u2019eau du Livet s&rsquo;ach\u00e8ve.<\/p>\n<h3><strong>2020<\/strong><\/h3>\n<p>Au printemps, arr\u00eat du fonctionnement des six anciennes centrales. Le 9 octobre, inauguration et mise en service officielle de l\u2019ensemble du nouvel am\u00e9nagement hydro\u00e9lectrique de Romanche-Gavet.<\/p>\n<h3><strong>2021<\/strong><\/h3>\n<p>En avril, les travaux de d\u00e9construction des anciennes infrastructures hydro\u00e9lectriques de la vall\u00e9e de la Romanche d\u00e9butent.<\/p>\n<h3><strong>2024<\/strong><\/h3>\n<p>La d\u00e9construction compl\u00e8te des ouvrages hydro\u00e9lectriques est achev\u00e9e.<\/p>\n<\/div><\/section><\/div><\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2fbclp9-fc6d5ca16b1e1b016613e254d66ef072\">\n.flex_column.av-2fbclp9-fc6d5ca16b1e1b016613e254d66ef072{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2fbclp9-fc6d5ca16b1e1b016613e254d66ef072 av_one_third  avia-builder-el-13  el_after_av_two_third  el_before_av_hr  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kwg2l9-f2899f2b45e67dd97244aa2e99ac0e12\">\n#top .hr.hr-invisible.av-kwg2l9-f2899f2b45e67dd97244aa2e99ac0e12{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-kwg2l9-f2899f2b45e67dd97244aa2e99ac0e12 hr-invisible  avia-builder-el-14  el_before_av_textblock  avia-builder-el-first '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-mbti81jo-d4a518c4b1af09ec3553fb15748eeab2 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h5>photos de la vall\u00e9e et des ouvrages d\u00e9mantel\u00e9s<\/h5>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/pierre-eybesse-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/pierre-eybesse-VF.png\" alt=\"\" width=\"1280\" height=\"575\" \/><\/a>Comparaison vues a\u00e9riennes\u00a0Pierre-Eybesse \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/riouperoux-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/riouperoux-VF.png\" alt=\"\" width=\"1281\" height=\"572\" \/><\/a>Comparaison vues a\u00e9riennes Rioup\u00e9roux \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/infernet-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/infernet-VF.png\" alt=\"\" width=\"1278\" height=\"577\" \/><\/a>Comparaison vues a\u00e9riennes Infernet \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/robert-vf.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/robert-vf.png\" alt=\"\" width=\"1279\" height=\"575\" \/><\/a><br \/>\nComparaison vues a\u00e9riennes Roberts \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<p><a href=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/livet-VF.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/ern-sosloirevivante.org\/wp-content\/uploads\/2025\/06\/livet-VF.png\" alt=\"\" width=\"1278\" height=\"577\" \/><\/a><br \/>\nComparaison vues a\u00e9riennes Livet \u00a9IGN &#8211; \u00a9G\u00e9oportail<\/p>\n<h5><\/h5>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-135z731-afef0552ca613f9ab00b49ffe3c164ea\">\n#top .hr.hr-invisible.av-135z731-afef0552ca613f9ab00b49ffe3c164ea{\nheight:40px;\n}\n<\/style>\n<div  class='hr av-135z731-afef0552ca613f9ab00b49ffe3c164ea hr-invisible  avia-builder-el-16  el_after_av_one_third  el_before_av_one_full '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2gn5pkt-028f4b40cf9fec7ef996694f7329eb2a\">\n.flex_column.av-2gn5pkt-028f4b40cf9fec7ef996694f7329eb2a{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-2gn5pkt-028f4b40cf9fec7ef996694f7329eb2a av_one_full  avia-builder-el-17  el_after_av_hr  el_before_av_hr  first flex_column_div av-zero-column-padding  '     ><div  class='avia-button-wrap av-29w8urh-abcd0a70536b32558b2e53f6ccc14484-wrap avia-button-center  avia-builder-el-18  avia-builder-el-no-sibling '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-29w8urh-abcd0a70536b32558b2e53f6ccc14484\">\n#top #wrap_all .avia-button.av-29w8urh-abcd0a70536b32558b2e53f6ccc14484:hover{\ncolor:white;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-29w8urh-abcd0a70536b32558b2e53f6ccc14484:hover .avia-svg-icon svg:first-child{\nfill:white;\nstroke:white;\n}\n<\/style>\n<a href='https:\/\/www.ern.org\/fr\/romanche-reconfiguration-et-effacements\/'  class='avia-button av-29w8urh-abcd0a70536b32558b2e53f6ccc14484 av-link-btn avia-icon_select-no avia-size-large avia-position-center avia-color-theme-color avia-font-color-theme-color'   aria-label=\"Retour \u00e0 la page d\u2019accueil du projet\"><span class='avia_iconbox_title' >Retour \u00e0 la page d\u2019accueil du projet<\/span><span class='avia_button_background avia-button avia-color-theme-color-highlight' ><\/span><\/a><\/div><\/div>\n<div  class='hr av-l6xau5-281b207f6abb8d47867fe19c7175fc70 hr-default  avia-builder-el-19  el_after_av_one_full  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":7,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-21085","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/21085","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/comments?post=21085"}],"version-history":[{"count":2,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/21085\/revisions"}],"predecessor-version":[{"id":26173,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/21085\/revisions\/26173"}],"wp:attachment":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/media?parent=21085"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}