{"id":3286,"date":"2017-12-24T16:08:40","date_gmt":"2017-12-24T15:08:40","guid":{"rendered":"https:\/\/www.ern.org\/?page_id=3286"},"modified":"2025-06-13T15:21:26","modified_gmt":"2025-06-13T13:21:26","slug":"fragmentation","status":"publish","type":"page","link":"https:\/\/www.ern.org\/fr\/fragmentation\/","title":{"rendered":"Menaces &#8211; Impact des barrages et seuils"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-15tgyhy-d66018890153860e56f1404a26000d08\">\n.flex_column.av-15tgyhy-d66018890153860e56f1404a26000d08{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-15tgyhy-d66018890153860e56f1404a26000d08 av_two_third  avia-builder-el-0  el_before_av_one_third  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-42o7eu-34db118e8ad196ac9e7db6835e4ba8af\">\n#top .av-special-heading.av-42o7eu-34db118e8ad196ac9e7db6835e4ba8af{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-42o7eu-34db118e8ad196ac9e7db6835e4ba8af .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-42o7eu-34db118e8ad196ac9e7db6835e4ba8af .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-42o7eu-34db118e8ad196ac9e7db6835e4ba8af av-special-heading-h2 blockquote modern-quote  avia-builder-el-1  el_before_av_hr  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >La fragmentation cr\u00e9\u00e9e par les seuils et barrages impacte les fleuves et rivi\u00e8res <\/h2><div class='av-subheading av-subheading_below'><p>Ces ouvrages sont en Europe la principale cause du d\u00e9clin des rivi\u00e8res et des syst\u00e8mes aquatiques.<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<div  class='hr av-7sf0qu-8aab9310f0851263d4883918a56e76e7 hr-default  avia-builder-el-2  el_after_av_heading  el_before_av_image '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<br \/>\n<section  class='av_textblock_section av-mbumi551-0cd8ea6a74624453b8b16eafd80934b5 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><div id=\"attachment_21702\" style=\"width: 197px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/barrage-du-Vezins-\u00a9JP-Doron-IMG_1395.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-21702\" class=\"wp-image-21702\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/barrage-du-Vezins-\u00a9JP-Doron-IMG_1395.jpg\" alt=\"\" width=\"187\" height=\"125\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/barrage-du-Vezins-\u00a9JP-Doron-IMG_1395.jpg 1000w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/barrage-du-Vezins-\u00a9JP-Doron-IMG_1395-300x200.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/barrage-du-Vezins-\u00a9JP-Doron-IMG_1395-768x513.jpg 768w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/barrage-du-Vezins-\u00a9JP-Doron-IMG_1395-705x471.jpg 705w\" sizes=\"auto, (max-width: 187px) 100vw, 187px\" \/><\/a><p id=\"caption-attachment-21702\" class=\"wp-caption-text\">Seuil de SIBILA sur la Daronne (Ard\u00e8che) &#8211; \u00a9 SMBVD<\/p><\/div><br \/>\n<div id=\"attachment_21699\" style=\"width: 192px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SYMBA_tardoire.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-21699\" class=\"wp-image-21699\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SYMBA_tardoire.jpg\" alt=\"\" width=\"182\" height=\"125\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SYMBA_tardoire.jpg 1000w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SYMBA_tardoire-300x206.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SYMBA_tardoire-768x528.jpg 768w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SYMBA_tardoire-705x485.jpg 705w\" sizes=\"auto, (max-width: 182px) 100vw, 182px\" \/><\/a><p id=\"caption-attachment-21699\" class=\"wp-caption-text\">Seuil de la forge du Buisson sur la Tardoire (Haute Vienne) &#8211; \u00a9 SYMBA<\/p><\/div><br \/>\n<div id=\"attachment_21696\" style=\"width: 232px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SMBVD_20250327152346_0002_D.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-21696\" class=\"wp-image-21696\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SMBVD_20250327152346_0002_D.jpg\" alt=\"\" width=\"222\" height=\"125\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SMBVD_20250327152346_0002_D.jpg 1000w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SMBVD_20250327152346_0002_D-300x169.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SMBVD_20250327152346_0002_D-768x432.jpg 768w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2025\/06\/\u00a9SMBVD_20250327152346_0002_D-705x397.jpg 705w\" sizes=\"auto, (max-width: 222px) 100vw, 222px\" \/><\/a><p id=\"caption-attachment-21696\" class=\"wp-caption-text\">Barrage de Vezins sur la S\u00e9lune (Manche) &#8211; \u00a9 JP Doron<\/p><\/div><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-5rgzpi-1bb9b769f45b494fbf52ce8af66efe69 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Photos : Exemple de grand et petit barrages et seuils<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-105g4x2-1a98d0a0b4d0e7f648ccc091ab19cb74\">\n#top .hr.hr-invisible.av-105g4x2-1a98d0a0b4d0e7f648ccc091ab19cb74{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-105g4x2-1a98d0a0b4d0e7f648ccc091ab19cb74 hr-invisible  avia-builder-el-6  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-jko8z0cu-9c73e2975947a87c6c14766756806a9e '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>A travers ses projets et campagnes de communication, ERN concentre son action sur la question des barrages et des centrales hydo\u00e9lectriques pr\u00e9sents en trop grand nombre sur la plupart des fleuves d&rsquo;Europe. <a href=\"https:\/\/www.ern.org\/fr\/hydroelectricite\/\">(lire notre page Hydro\u00e9lectricit\u00e9)<\/a>. Ces barrages entravent en effet la libre circulation des poissons et des s\u00e9diments.<\/p>\n<p>R\u00e9duire le nombre de ces obstacles \u00e0 la continuit\u00e9 \u00e9cologique, quels qu&rsquo;ils soient, ou bien les modifier drastiquement peut permettre au cours d&rsquo;eau de retrouver tr\u00e8s rapidement son fonctionnement et sa dynamique naturels, ce qui stimule un processus d&rsquo;auto-r\u00e9g\u00e9n\u00e9ration, et conduit \u00e0 une am\u00e9lioration de la biodiversit\u00e9.<\/p>\n<p><div id=\"attachment_12356\" style=\"width: 1010px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/07\/European-Atlas-of-In-stream-barriers-1-min-page-001-scaled_bd.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12356\" class=\"wp-image-12356 size-full\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/07\/European-Atlas-of-In-stream-barriers-1-min-page-001-scaled_bd.jpg\" alt=\"\" width=\"1000\" height=\"750\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/07\/European-Atlas-of-In-stream-barriers-1-min-page-001-scaled_bd.jpg 1000w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/07\/European-Atlas-of-In-stream-barriers-1-min-page-001-scaled_bd-300x225.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/07\/European-Atlas-of-In-stream-barriers-1-min-page-001-scaled_bd-768x576.jpg 768w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/07\/European-Atlas-of-In-stream-barriers-1-min-page-001-scaled_bd-705x529.jpg 705w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a><p id=\"caption-attachment-12356\" class=\"wp-caption-text\">Carte issue de AMBER, Belletti et al 2020. Nature. 588, 436-441 Atlas paneurop\u00e9en des obstacles dans les cours d\u2019eau,630 000 obstacles recens\u00e9s et 1 million estim\u00e9 dont 100 000 obsol\u00e8tes ou sans usages, AMBER 2020<\/p><\/div><br \/>\n<div id=\"attachment_10127\" style=\"width: 810px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/wwfeu.awsassets.panda.org\/downloads\/hydropower_infographics_final_1.pdf\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10127\" class=\"wp-image-10127\" src=\"http:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/1-European-HPP-Map-c-Fluvius-300x261.jpg\" alt=\"\" width=\"800\" height=\"697\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/1-European-HPP-Map-c-Fluvius-300x261.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/1-European-HPP-Map-c-Fluvius-1030x898.jpg 1030w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/1-European-HPP-Map-c-Fluvius-768x669.jpg 768w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/1-European-HPP-Map-c-Fluvius-705x614.jpg 705w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/1-European-HPP-Map-c-Fluvius.jpg 1051w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><p id=\"caption-attachment-10127\" class=\"wp-caption-text\">Carte issue de :\u00a0 Hydropower pressure on European Rivers : The story in Numbers, Euronatur,Riverwatch, WWF, Geota, 2019<\/p><\/div><\/p>\n<h4>Les barrages ont de s\u00e9v\u00e8res impacts environnementaux et sociaux<\/h4>\n<p><strong>&gt; Interruption de la continuit\u00e9 \u00e9cologique<\/strong><\/p>\n<ul>\n<li>Blocage de la migration des poissons<\/li>\n<li>Perte de biodiversit\u00e9<\/li>\n<li>Perte de s\u00e9diments en aval des barrages<\/li>\n<li>Enfoncement du lit du cours d&rsquo;eau, baisse du niveau d&rsquo;eau<\/li>\n<li>Accroissement des effets des inondations en aval<\/li>\n<li>D\u00e9connection des milieux aquatiques et humides annexes<\/li>\n<\/ul>\n<p>Exemple du Rhin : il n&rsquo;y a plus de saumon sauvage, la vitesse d&rsquo;\u00e9coulement de l&rsquo;eau a doubl\u00e9 entre B\u00e2le et Karlsruhe, la r\u00e9tention d&rsquo;eau a diminu\u00e9.<\/p>\n<p><strong>&gt; Accroissement de l&rsquo;\u00e9rosion sur le littoral<\/strong><\/p>\n<p>Exemples : le Rh\u00f4ne, tr\u00e8s impact\u00e9 par les barrages : Perte de 2 \u00e0 10 m de terre par an, le long de la ligne de c\u00f4te en Camargue (Delta du Rh\u00f4ne). Saintes-Maries-de-la-Mer va devenir une \u00eele (perte de s\u00e9diments, augmentation du niveau de la mer). Les m\u00eames probl\u00e8me sont observ\u00e9s sur le delta de l&rsquo;Ebre.<\/p>\n<p><strong>&gt; Augmentation de la temp\u00e9rature de l&rsquo;eau dans les r\u00e9servoirs et les cours d&rsquo;eau<\/strong><\/p>\n<ul>\n<li>Eutrophisation impactant la qualit\u00e9 de l&rsquo;eau et des \u00e9cosyst\u00e8mes<\/li>\n<\/ul>\n<p><strong>&gt; D\u00e9placement de millions de personnes \u00e0 travers le monde<\/strong><\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-xmg13q-5604df73f49e9b3fa0a89519c781120b\">\n.flex_column.av-xmg13q-5604df73f49e9b3fa0a89519c781120b{\n-webkit-border-radius:0px 0px 0px 0px;\n-moz-border-radius:0px 0px 0px 0px;\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-xmg13q-5604df73f49e9b3fa0a89519c781120b av_one_third  avia-builder-el-8  el_after_av_two_third  avia-builder-el-last  flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3thwza-d0e19ff66002968bb1dca8abed87badd\">\n#top .av-special-heading.av-3thwza-d0e19ff66002968bb1dca8abed87badd{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-3thwza-d0e19ff66002968bb1dca8abed87badd .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-3thwza-d0e19ff66002968bb1dca8abed87badd .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-3thwza-d0e19ff66002968bb1dca8abed87badd av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-9  el_before_av_magazine  avia-builder-el-first '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Actualit\u00e9s<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<div  id=\"avia-magazine-1\"  class='av-magazine av-vzqouu-33015ac538964136539583d96e66fcfb  avia-builder-el-10  el_after_av_heading  el_before_av_hr   avia-builder-el-10  el_after_av_heading  el_before_av_hr ' ><div class='av-magazine-group sort_all'><article class='av-magazine-entry av-magazine-entry-id-22607 av-magazine-format-standard av-magazine-type-post av-magazine-entry-1 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www.ern.org\/fr\/la-directive-cadre-sur-leau-est-menacee-signez-la-petition-lancee-par-la-coalition-dong-europeenne-handsoffnature\/' title='Lier vers : Les lois europ\u00e9ennes qui prot\u00e8gent notre environnement sont menac\u00e9es. Signez la p\u00e9tition' class='av-magazine-thumbnail-link'><img decoding=\"async\" width=\"80\" height=\"80\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/09\/photo-Soca-CLarroque2017-80x80.jpg\" class=\"wp-image-12810 avia-img-lazy-loading-not-12810 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/09\/photo-Soca-CLarroque2017-80x80.jpg 80w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/09\/photo-Soca-CLarroque2017-36x36.jpg 36w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/09\/photo-Soca-CLarroque2017-180x180.jpg 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2026-02-13T18:06:46+01:00\" >13 f\u00e9vrier 2026<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.ern.org\/fr\/la-directive-cadre-sur-leau-est-menacee-signez-la-petition-lancee-par-la-coalition-dong-europeenne-handsoffnature\/' title='Lier vers : Les lois europ\u00e9ennes qui prot\u00e8gent notre environnement sont menac\u00e9es. Signez la p\u00e9tition'>Les lois europ\u00e9ennes qui prot\u00e8gent notre environnement sont menac\u00e9es. Signez la p\u00e9tition<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-22565 av-magazine-format-standard av-magazine-type-post av-magazine-entry-2 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www.ern.org\/fr\/register-barrier-removal-for-flood-prevention-and-safety-webinar\/' title='Lier vers : Webinaire \u00ab\u00a0Barrier Removal for Flood Prevention and Safety\u00a0\u00bb' class='av-magazine-thumbnail-link'><img decoding=\"async\" width=\"80\" height=\"80\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2017\/12\/20171208_table_ronde_SFN_inondation_cc_ERN-80x80.jpg\" class=\"wp-image-6958 avia-img-lazy-loading-not-6958 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2017\/12\/20171208_table_ronde_SFN_inondation_cc_ERN-80x80.jpg 80w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2017\/12\/20171208_table_ronde_SFN_inondation_cc_ERN-36x36.jpg 36w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2017\/12\/20171208_table_ronde_SFN_inondation_cc_ERN-180x180.jpg 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2026-01-22T15:38:06+01:00\" >22 janvier 2026<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.ern.org\/fr\/register-barrier-removal-for-flood-prevention-and-safety-webinar\/' title='Lier vers : Webinaire \u00ab\u00a0Barrier Removal for Flood Prevention and Safety\u00a0\u00bb'>Webinaire \u00ab\u00a0Barrier Removal for Flood Prevention and Safety\u00a0\u00bb<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-22539 av-magazine-format-standard av-magazine-type-post av-magazine-entry-3 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www.ern.org\/fr\/celebrons-les-25-ans-de-la-directive-cadre-sur-leau-%f0%9f%92%a7%f0%9f%8e%89\/' title='Lier vers : C\u00e9l\u00e9brons les 25 ans de la Directive Cadre sur l&rsquo;Eau \ud83d\udca7\ud83c\udf89' class='av-magazine-thumbnail-link'><img decoding=\"async\" width=\"80\" height=\"80\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2018\/07\/LR_1-80x80.png\" class=\"wp-image-7060 avia-img-lazy-loading-not-7060 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"logo Living Rivers Europe\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2018\/07\/LR_1-80x80.png 80w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2018\/07\/LR_1-36x36.png 36w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2018\/07\/LR_1-180x180.png 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2025-12-22T09:00:27+01:00\" >22 d\u00e9cembre 2025<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.ern.org\/fr\/celebrons-les-25-ans-de-la-directive-cadre-sur-leau-%f0%9f%92%a7%f0%9f%8e%89\/' title='Lier vers : C\u00e9l\u00e9brons les 25 ans de la Directive Cadre sur l&rsquo;Eau \ud83d\udca7\ud83c\udf89'>C\u00e9l\u00e9brons les 25 ans de la Directive Cadre sur l&rsquo;Eau \ud83d\udca7\ud83c\udf89<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-22435 av-magazine-format-standard av-magazine-type-post av-magazine-entry-4 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www.ern.org\/fr\/webinaires-continuite-ecologique-les-inscriptions-sont-ouvertes\/' title='Lier vers : Y-a-t-il encore des rivi\u00e8res pour les poissons migrateurs? Biodiversit\u00e9 ou hydro\u00e9lectricit\u00e9 ?' class='av-magazine-thumbnail-link'><img decoding=\"async\" width=\"80\" height=\"80\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-80x80.png\" class=\"wp-image-11148 avia-img-lazy-loading-not-11148 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-80x80.png 80w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-36x36.png 36w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-180x180.png 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2025-12-01T17:20:26+01:00\" >1 d\u00e9cembre 2025<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.ern.org\/fr\/webinaires-continuite-ecologique-les-inscriptions-sont-ouvertes\/' title='Lier vers : Y-a-t-il encore des rivi\u00e8res pour les poissons migrateurs? Biodiversit\u00e9 ou hydro\u00e9lectricit\u00e9 ?'>Y-a-t-il encore des rivi\u00e8res pour les poissons migrateurs? Biodiversit\u00e9 ou hydro\u00e9lectricit\u00e9 ?<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-22447 av-magazine-format-standard av-magazine-type-post av-magazine-entry-5 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www.ern.org\/fr\/25-000-km-de-cours-deau-libre\/' title='Lier vers : 25 000 km  de cours d&rsquo;eau libre en Europe ? Que fait la France ?' class='av-magazine-thumbnail-link'><img decoding=\"async\" width=\"80\" height=\"80\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-80x80.png\" class=\"wp-image-11148 avia-img-lazy-loading-not-11148 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-80x80.png 80w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-36x36.png 36w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/01\/logo_soslv_ern-180x180.png 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2025-12-01T17:14:47+01:00\" >1 d\u00e9cembre 2025<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.ern.org\/fr\/25-000-km-de-cours-deau-libre\/' title='Lier vers : 25 000 km  de cours d&rsquo;eau libre en Europe ? Que fait la France ?'>25 000 km  de cours d&rsquo;eau libre en Europe ? Que fait la France ?<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><article class='av-magazine-entry av-magazine-entry-id-22265 av-magazine-format-standard av-magazine-type-post av-magazine-entry-6 av-magazine-entry-small '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"av-magazine-thumbnail\"><a href='https:\/\/www.ern.org\/fr\/un-avenir-en-pleine-expansion-les-actions-de-demantelement-des-barrages-se-multiplient-dans-le-sud-est-de-leurope\/' title='Lier vers : UN AVENIR EN PLEINE EXPANSION : LES ACTIONS DE D\u00c9MANT\u00c8LEMENT DES BARRAGES SE MULTIPLIENT DANS LE SUD-EST DE L&rsquo;EUROPE' class='av-magazine-thumbnail-link'><img decoding=\"async\" width=\"80\" height=\"80\" src=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2023\/04\/map_ORPprojects_april2023-80x80.png\" class=\"wp-image-18052 avia-img-lazy-loading-not-18052 attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2023\/04\/map_ORPprojects_april2023-80x80.png 80w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2023\/04\/map_ORPprojects_april2023-36x36.png 36w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2023\/04\/map_ORPprojects_april2023-180x180.png 180w\" sizes=\"(max-width: 80px) 100vw, 80px\" \/><\/a><\/div><div class=\"av-magazine-content-wrap\"><header class=\"entry-content-header\"><time class='av-magazine-time updated'  itemprop=\"datePublished\" datetime=\"2025-10-08T09:00:02+02:00\" >8 octobre 2025<\/time><h3 class='av-magazine-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.ern.org\/fr\/un-avenir-en-pleine-expansion-les-actions-de-demantelement-des-barrages-se-multiplient-dans-le-sud-est-de-leurope\/' title='Lier vers : UN AVENIR EN PLEINE EXPANSION : LES ACTIONS DE D\u00c9MANT\u00c8LEMENT DES BARRAGES SE MULTIPLIENT DANS LE SUD-EST DE L&rsquo;EUROPE'>UN AVENIR EN PLEINE EXPANSION : LES ACTIONS DE D\u00c9MANT\u00c8LEMENT DES BARRAGES SE MULTIPLIENT DANS LE SUD-EST DE L&rsquo;EUROPE<\/a><\/h3><\/header><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div><\/div><br \/>\n<div  class='hr av-ty0l0m-0b83b49eeec68ebc88c8e11f6d46a580 hr-default  avia-builder-el-11  el_after_av_magazine  el_before_av_heading '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mbgn5419-9c77c960a18d40d098eca8ddf8ede4b5\">\n#top .av-special-heading.av-mbgn5419-9c77c960a18d40d098eca8ddf8ede4b5{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-mbgn5419-9c77c960a18d40d098eca8ddf8ede4b5 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mbgn5419-9c77c960a18d40d098eca8ddf8ede4b5 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mbgn5419-9c77c960a18d40d098eca8ddf8ede4b5 av-special-heading-h2 blockquote modern-quote modern-centered  avia-builder-el-12  el_after_av_hr  el_before_av_textblock '><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >Rapports<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-10zrbbq-50f2124d41774b9edf1c9793889909d3 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>&#8211; <a href=\"https:\/\/www.fne-aura.org\/publications\/region\/hydroelectricite-en-revenir-a-la-raison\/\">Hydro\u00e9lectricit\u00e9 : en revenir \u00e0 la raison ! Quels sont les v\u00e9ritables enjeux de l\u2019hydro\u00e9lectricit\u00e9 au regard de la transition \u00e9cologique ? Nos experts font le point. <\/a>(french only) FNE AURA, janvier 2022<\/p>\n<p>\u2013\u00a0<a href=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2023\/01\/2022-OFB_Synthese-Impacts_Hydroelectricite.pdf\">Synth\u00e8se des principaux impacts \u00e9cologiques engendr\u00e9s par les am\u00e9nagements hydro\u00e9lectriques et de leurs cons\u00e9quences sur le fonctionnement des cours d\u2019eau<\/a>, Janvier 2022 OFB<\/p>\n<p>\u2013\u00a0<a href=\"http:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2019\/11\/European-Hydropower-summary-doc-2019_w.pdf\">Hydropower pressure on European Rivers : The story in numbers \u2013 summary report<\/a>, Euronatur,Riverwatch, WWF, Geota, 2019, anglais et <a href=\"https:\/\/wwfeu.awsassets.panda.org\/downloads\/hydropower_pressure_on_european_rivers_the_story_in_numbers_web.pdf\">full report<\/a><\/p>\n<p>\u2013\u00a0<a href=\"http:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/02\/10_reasons_french_2.pdf\" target=\"_blank\" rel=\"noopener\">10 raisons pour lesquelles les initiatives climatiques ne devraient pas inclure de grands projets hydro\u00e9lectriques<\/a>, un manifeste de la soci\u00e9t\u00e9 civile en soutien \u00e0 de r\u00e9elles solutions climatiques, 2015, fran\u00e7ais =&gt;\u00a0<a href=\"http:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2020\/02\/NAMRA-2019-10-Reasons-Why-Climate-Initiatives-Should-Not-Include-Large-Hydropower-Projects_-2.pdf\">document actualis\u00e9 en 2019<\/a>\u00a0(en anglais) par la NAMRA<\/p>\n<\/div><\/section><br \/>\n<div  class='hr av-2m424m-b289213a206ba9e9c3ac250defe94951 hr-default  avia-builder-el-14  el_after_av_textblock  el_before_av_heading '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2wfabq-68cb19699bbd67a1bcc63ffe5ff84bb2\">\n#top .av-special-heading.av-2wfabq-68cb19699bbd67a1bcc63ffe5ff84bb2{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-2wfabq-68cb19699bbd67a1bcc63ffe5ff84bb2 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-2wfabq-68cb19699bbd67a1bcc63ffe5ff84bb2 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-2wfabq-68cb19699bbd67a1bcc63ffe5ff84bb2 av-special-heading-h3 blockquote modern-quote modern-centered  avia-builder-el-15  el_after_av_hr  el_before_av_textblock '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Barrages au niveau mondial<\/h3><div class='av-subheading av-subheading_below'><p>Nombre et usage<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-5ufava-7ebf6229a7bf13fb372635bfb1fb7295 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"http:\/\/basic1.location-site-web.eu\/ern\/wp-content\/uploads\/sites\/52\/2016\/12\/rate_of_large_dam_constrution_europe.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-616 size-full\" src=\"http:\/\/basic1.location-site-web.eu\/ern\/wp-content\/uploads\/sites\/52\/2016\/12\/rate_of_large_dam_constrution_europe.jpg\" width=\"720\" height=\"540\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/rate_of_large_dam_constrution_europe.jpg 720w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/rate_of_large_dam_constrution_europe-300x225.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/rate_of_large_dam_constrution_europe-705x529.jpg 705w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/rate_of_large_dam_constrution_europe-450x338.jpg 450w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-jl5kzqcm-8cf1a115b87f9dead46e87448a79bb1e '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">En Europe la majorit\u00e9 des barrages sont utilis\u00e9s pour la production <a href=\"https:\/\/www.ern.org\/fr\/hydroelectricite\/\"><strong>d&rsquo;Hydro\u00e9l\u00e9ctricit\u00e9 (renouvelable mais pas si vert)<\/strong><\/a><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-2kdh1i-23f8730fd48ae98800b8ff8efe41da52 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p><a href=\"http:\/\/basic1.location-site-web.eu\/ern\/wp-content\/uploads\/sites\/52\/2016\/12\/use_of_dam_worldwide.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-617 size-full\" src=\"http:\/\/basic1.location-site-web.eu\/ern\/wp-content\/uploads\/sites\/52\/2016\/12\/use_of_dam_worldwide.jpg\" width=\"720\" height=\"540\" srcset=\"https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/use_of_dam_worldwide.jpg 720w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/use_of_dam_worldwide-300x225.jpg 300w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/use_of_dam_worldwide-705x529.jpg 705w, https:\/\/www.ern.org\/wp-content\/uploads\/sites\/52\/2016\/12\/use_of_dam_worldwide-450x338.jpg 450w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-mbgoqix2-eed0b1f0614c1332cd9cdeef8d50f600-wrap avia-button-center  avia-builder-el-19  el_after_av_textblock  el_before_av_textblock '><a href='https:\/\/www.ern.org\/fr\/hydroelectricite\/'  class='avia-button av-mbgoqix2-eed0b1f0614c1332cd9cdeef8d50f600 avia-icon_select-no avia-size-large avia-position-center avia-color-theme-color'  ><span class='avia_iconbox_title' >Voir notre position sur l\u2019hydro\u00e9lectricit\u00e9<\/span><\/a><\/div><br \/>\n<section  class='av_textblock_section av-mbgnfo75-ae916e28fb35bcf1349ee22a91dd3c90 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">Des solutions existent pour restaurer les continuit\u00e9s, effacer les ouvrages les plus impactants et obsol\u00e8tes, reconfigurer ceux \u00e0 usages strat\u00e9giques et prot\u00e9ger les rivi\u00e8res de toute nouvelles destructions\u00a0 (voir dans le menu \u00ab\u00a0SOLUTIONS\u00a0\u00bb)<\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-mbkiv2ar-481cef7c2f6e6d35ae2928b0506001e1-wrap avia-button-center  avia-builder-el-21  el_after_av_textblock  avia-builder-el-last '><a href='https:\/\/www.ern.org\/fr\/dam-watch\/'  class='avia-button av-mbkiv2ar-481cef7c2f6e6d35ae2928b0506001e1 avia-icon_select-no avia-size-large avia-position-center avia-color-theme-color'  ><span class='avia_iconbox_title' >DAM WATCH : \u00e9tudes de cas<\/span><\/a><\/div><\/p><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":39,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-3286","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/3286","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\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/comments?post=3286"}],"version-history":[{"count":0,"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/pages\/3286\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ern.org\/fr\/wp-json\/wp\/v2\/media?parent=3286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}