{"id":38585,"date":"2025-05-15T16:10:00","date_gmt":"2025-05-15T14:10:00","guid":{"rendered":"https:\/\/www.cnr.tm.fr\/grand-projet\/restauration-ecologique-du-rhone-de-pierre-benite\/"},"modified":"2026-08-18T10:54:12","modified_gmt":"2026-08-18T08:54:12","slug":"restauration-ecologique-du-rhone-de-pierre-benite","status":"publish","type":"grand-projet","link":"https:\/\/www.cnr.tm.fr\/en\/grand-projet\/restauration-ecologique-du-rhone-de-pierre-benite\/","title":{"rendered":"Ecological restoration of the Rhone at Pierre-B\u00e9nite"},"content":{"rendered":"\n    \n\n\n\n<div class=\"banner_wrap as--txt-light\" style=background-color:#68C6DF banner-reveal reveal>\n            <div class=\"banner-content editor-wysiwyg\">\n                            <div class=\"breadcrumb-line\"><ol class=\"c-breadcrumb\" aria-label=\"breadcrumb\" role=\"navigation\" itemscope itemtype=\"http:\/\/schema.org\/BreadcrumbList\"><li itemprop=\"itemListElement\" itemscope itemtype=\"http:\/\/schema.org\/ListItem\"><a itemprop=\"item\" href=\"https:\/\/www.cnr.tm.fr\/en\/\" aria-level=\"1\"><span itemprop=\"name\">Home<\/span><\/a><meta itemprop=\"position\" content=\"1\"\/><\/li><li itemprop=\"itemListElement\" itemscope itemtype=\"http:\/\/schema.org\/ListItem\"><span itemprop=\"name\"><\/span><meta itemprop=\"position\" content=\"2\"\/><\/li><\/ol><\/div>\n                                        <h1 class=\"a-title-1\">Ecological restoration of the Rhone at Pierre-B\u00e9nite<\/h1>\n                                        <p class=\"as--highlight\">A global and ambitious programme<\/p>\n<p>The\u00a0<strong>ecological restoration of the sector of Irigny, Vernaison and Feyzin<\/strong>\u00a0is part of a huge programme initiated in 1998 by local actors including CNR. It involves the sections of the river located over its entire length. Carried over to the Rhone Plan of 2006, it is also part of the European Framework Directive on Water aimed at reaching <strong>the good ecological state of aquatic habitats<\/strong>.<\/p>\n<p class=\"as--highlight\">Success already proven in other territories<\/p>\n<p><strong>Ecological monitoring <\/strong>has shown that the Rhone\u2019s restoration has benefited the species typical of large rivers and increased the biological diversity of the alluvial plan. Thus, 77 oxbows have been restored along 120 kilometres of the Rhone.<\/p>\n\n                                <\/div>\n\n                    <div class=\"banner-pin\" banner-reveal-pin>\n                <div class=\"banner-images\">\n                                        <div class=\"slider-wrap\" banner-gallery dir=\"rtl\">\n                        <div class=\"slider\" data-slick='{\"slidesToShow\": 1, \"infinite\": true, \"arrows\": false, \"autoplay\": true, \"rtl\": true}'>\n                                                                                            <div class=\"banner-image\">\n                                    <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2025\/12\/CNR_restauration_ecologique_sud_de_Lyon-1050x720.jpg\" alt=\"\" loading=\"eager\" fetchpriority=\"high\">\n                                <\/div>\n                                                    <\/div>\n                    <\/div>\n                    <button type=\"button\" class=\"slick-autoplay-toggle\" aria-label=\"Mettre le d\u00e9filement automatique en pause \/ Jouer\">\n                            <svg class=\"a-icon as--12 slick-pause-icon as--white\" aria-hidden=\"true\"\n         focusable=\"false\">\n        <use xlink:href=\"\/app\/themes\/cnr-acti\/assets\/img\/svg\/icon-sprite.svg#icon-pause\"><\/use>\n    <\/svg>\n\n                            <svg class=\"a-icon as--12 slick-play-icon as--white\" aria-hidden=\"true\"\n         focusable=\"false\">\n        <use xlink:href=\"\/app\/themes\/cnr-acti\/assets\/img\/svg\/icon-sprite.svg#icon-play\"><\/use>\n    <\/svg>\n\n                        <span class=\"slick-pause-text sr-only\">Pause<\/span>\n                        <span class=\"slick-play-text sr-only\">Jouer<\/span>\n                    <\/button>\n                <\/div>\n            <\/div>\n        \n            <\/div>\n\n\n<section class=\"content-section\">\n    <div class=\"inner-wrap\">\n                    <div class=\"editor-img\" reveal>\n                <figure role=\"figure\" aria-label=\"Example of the Rh\u00f4ne south of Lyon\">\n                                        <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2024\/07\/evolution_trace_fleuve_rhone.png\" alt=\"\" width=\"723\" height=\"422\" loading=\"lazy\">\n                    <figcaption>Example of the Rh\u00f4ne south of Lyon<\/figcaption>\n                <\/figure>\n            <\/div>\n            <\/div>\n<\/section>\n\n\n\n\n    \n    \n\n<section class=\"content-section as--normal-margin as--txt-dark as--bgcolor\" style=background-color:#68C6DF33>\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <h2>The goals targeted<\/h2>\n<ul>\n<li><strong>Return the Rhone to more natural functioning <\/strong>with more space to evolve and with sediment transport partially restored.<\/li>\n<li><strong>Favour biodiversity<\/strong>, by re-establishing habitats favourable for a large number of species, including certain rare or protected ones.<\/li>\n<li><strong>Increase the positive effects of floods <\/strong>especially in the oxbows, thereby favouring \u201cself-maintenance\u201d to limit clogging by sediments, and allow erosion processes that diversify ecosystems.<\/li>\n<li><strong>Prepare the river\u2019s resilience to climate change<\/strong>, by favouring exchanges between all the aquatic habitats composing it: main channel, secondary branches, wetlands, underground aquifers, etc.<\/li>\n<\/ul>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n\n    \n                \n\n<section class=\"content-section as--normal-margin as--txt-dark \" >\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <h2>The actions carried out<\/h2>\n<ul>\n<li>Remove the Girardon spur dikes.<\/li>\n<li>Excavate the beds of former oxbows and new secondary branches.<\/li>\n<li>Return to the river fines and coarse materials taken from earthworks, leading to the return of sediment continuity and restoring the river bed.<\/li>\n<li>Plant varied and adapted species (black and white poplars, white willows, etc.) to combat colonisation by invasive species.<\/li>\n<\/ul>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n<section class=\"content-section\">\n    <div class=\"inner-wrap\">\n                    <div class=\"editor-img\" reveal>\n                <figure role=\"figure\" aria-label=\"\">\n                                        <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2024\/07\/actions_RER.png\" alt=\"\" width=\"975\" height=\"711\" loading=\"lazy\">\n                    <figcaption><\/figcaption>\n                <\/figure>\n            <\/div>\n            <\/div>\n<\/section>\n\n\n\n\n    \n    \n\n<section class=\"content-section as--normal-margin as--txt-dark as--bgcolor\" style=background-color:#68C6DF33>\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <h2>The works accomplished<\/h2>\n<ol>\n<li>Dismantling of rockfill spur dikes (environ 80,000 m<sup>3<\/sup> removed and recycled).<\/li>\n<li>Excavation of more than 5 km of secondary branches.<\/li>\n<li>Treatment of floating primrose willow and rejuvenation of the Jaricot oxbow.<\/li>\n<li>Excavation of groundwater pools.<\/li>\n<li>Reconnection of the Ciselande oxbow to compensation water.<\/li>\n<li>Removal of the water inlet from the oxbow.<\/li>\n<li>Remobilisation of the alluvial bank.<\/li>\n<li>Creation of a wetland over 1.1 hectare (notably an aquatic reedbed).<\/li>\n<li>Connection of the Guinet pond to the Rhone linked with the creation of spawning grounds.<\/li>\n<li>Creation of a spawning ground, in particular for pike.<\/li>\n<\/ol>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n<section class=\"content-section\">\n    <div class=\"inner-wrap\">\n                    <div class=\"editor-img\" reveal>\n                <figure role=\"figure\" aria-label=\"\">\n                                        <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2024\/07\/travaux_RER.png\" alt=\"\" width=\"826\" height=\"655\" loading=\"lazy\">\n                    <figcaption><\/figcaption>\n                <\/figure>\n            <\/div>\n            <\/div>\n<\/section>\n\n\n\n\n    \n                \n\n<section class=\"content-section as--normal-margin as--txt-dark \" >\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <p>The <strong>earthworks <\/strong>will require the removal of about 2,000 trees (of which 25% are invasive species), which will be mostly offset by the <strong>plantation of 5,000 trees and shrubs <\/strong>belonging to adapted species bearing the Local Plant label. Nearly 380,000 m<sup>3<\/sup> of sediments will be moved in the framework of the project.<\/p>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n\n    \n    \n\n<section class=\"content-section as--normal-margin as--txt-dark as--bgcolor\" style=background-color:#68C6DF33>\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <h2>The calendar<\/h2>\n<p>The works will be carried out in <strong>3 phases<\/strong>, each time between the months of September and March,\u00a0to limit impacts on the biological cycles of plant and animal species as well as the use of the site for leisure purposes. Started in January 2025, they are due to end in spring 2028.<\/p>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n\n    \n                \n\n<section class=\"content-section as--normal-margin as--txt-dark \" >\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <h2>A project subject to scientific monitoring and designed in concert<\/h2>\n<p>For 20 years, the global project of the ecological restoration of the Rhone has been carried out in parallel with a <strong>scientific research programme<\/strong>,\u00a0<a href=\"https:\/\/www.rhoneco.fr\/\" target=\"_blank\" rel=\"noopener\"><strong>Rh\u00f4nEco<\/strong><\/a>, that above all performs ecological monitoring. Regular dialogue with CNR makes it possible to adapt actions according to feedback from the field and check the efficiency of the measures taken.<\/p>\n<p><strong>Extensive consultation was carried out<\/strong>\u00a0<strong>with the territories<\/strong>, river users, (walkers, anglers, cyclists, hunters, canoeists, etc), the neighbouring population, nature associations, scientists, and institutional and financial actors such as the State, the Rhone-Mediterranean-Corsica Water Agency and the European Union. Different visits to sites and workshops organised with the SMIRIL, which brings together a user\u2019s committee, led to the shared conception of this project of proven utility.\u00a0<\/p>\n<p><strong>With the support of the following partners:<\/strong><\/p>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n<section class=\"content-section\">\n    <div class=\"inner-wrap as--large\">\n                    <div class=\"logos\" reveal>\n                                                                            \n                                            <a class=\"logo\" href=\"https:\/\/www.prefectures-regions.gouv.fr\/auvergne-rhone-alpes\" target=\"_blank\" title=\"\" rel=\"noopener noreferrer\">\n                            <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2026\/01\/Logo_prefete_region_AURA.png\" alt=\"\" \/>\n                        <\/a>\n                                                    <div class=\"logos-separator\"><\/div>\n                                                                                                                        \n                                            <a class=\"logo\" href=\"https:\/\/www.smiril.fr\/\" target=\"_blank\" title=\"\" rel=\"noopener noreferrer\">\n                            <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2026\/01\/Logo_iles_lones_rhone.png\" alt=\"\" \/>\n                        <\/a>\n                                                    <div class=\"logos-separator\"><\/div>\n                                                                                                                        \n                                            <a class=\"logo\" href=\"https:\/\/www.eaurmc.fr\/\" target=\"_blank\" title=\"\" rel=\"noopener noreferrer\">\n                            <img 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target=\"_blank\" title=\"\" rel=\"noopener noreferrer\">\n                            <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2026\/01\/Logo_Irigny.png\" alt=\"\" \/>\n                        <\/a>\n                                                    <div class=\"logos-separator\"><\/div>\n                                                                                                                        \n                                            <a class=\"logo\" href=\"https:\/\/www.vernaison.fr\/\" target=\"\" title=\"\" rel=\"noopener noreferrer\">\n                            <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2026\/01\/Logo_Vernaison.png\" alt=\"\" \/>\n                        <\/a>\n                                                                        <\/div>\n            <\/div>\n<\/section>\n\n\n\n    \n    \n\n<section class=\"content-section as--normal-margin as--txt-dark as--bgcolor\" style=background-color:#68C6DF33>\n            <div class=\"inner-wrap\" reveal>\n            <div class=\"editor-wysiwyg h-mb-40\">\n                <h2>Newsletter<\/h2>\n<p>&nbsp;<\/p>\n<p><strong>If you would like to receive news about this project, you can subscribe to CNR\u2019s newsletter by writing to <\/strong><a href=\"mailto:restauration-rhone@cnr.tm.fr\" target=\"_blank\" rel=\"noopener\"><strong>restauration-rhone@cnr.tm.fr<\/strong><\/a><\/p>\n<p>This email address is used only for the transmission of newsletters and managing subscriptions to it.<\/p>\n<p>You can withdraw your consent to this data processing at any time, and can exercise your rights by writing to the following address:\u00a0<a href=\"mailto:donnees.personnelles@cnr.tm.fr\">donnees.personnelles@cnr.tm.fr<\/a><\/p>\n<p><a href=\"https:\/\/www.cnr.tm.fr\/vos-donnees-personnelles\/\" target=\"_blank\" rel=\"noopener\">Know more about the management of your data and your rights<\/a>.<\/p>\n<p>&nbsp;<\/p>\n\n            <\/div>\n        <\/div>\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n\n<section class=\"content-section\">\n    <div class=\"inner-wrap\">\n        <div class=\"m_video\" reveal>\n            <div class=\"m_video-media editor-wysiwyg-video\" data-id=\"VCeTtJFiK8Y\">\n                <button class=\"m_video-player\" aria-label=\"Visionner la vid\u00e9o : Ecological restoration of the Rh\u00f4ne river - Irigny, Vernaison and Feyzin sectors\">\n                        <svg class=\"a-icon as--45\" aria-hidden=\"true\"\n         focusable=\"false\">\n        <use xlink:href=\"\/app\/themes\/cnr-acti\/assets\/img\/svg\/icon-sprite.svg#icon-play\"><\/use>\n    <\/svg>\n\n                <\/button>\n                                                        <img decoding=\"async\" src=\"https:\/\/www.cnr.tm.fr\/app\/uploads\/2025\/05\/Restauration_ecologique-1050x720.png\" alt=\"\" width=\"1324\" height=\"740\" loading=\"lazy\">\n                            <\/div>\n        <\/div>\n        <div class=\"m_video-legend\">\n                            <p>\n                    <span class=\"video-name\">Ecological restoration of the Rh\u00f4ne river &#8211; Irigny, Vernaison and Feyzin sectors<\/span>\n                                            <span class=\"video-duration\">Dur\u00e9e : 5:17<\/span>\n                                                                            <\/p>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n\n\n    \n                \n\n<section class=\"content-section as--normal-margin as--txt-dark \" >\n        <div class=\"inner-wrap \">\n        <div class=\"as--column as--columns-0\" reveal>\n                    <\/div>\n    <\/div>\n<\/section>","protected":false},"author":6,"featured_media":38587,"menu_order":0,"template":"","categories":[133],"class_list":["post-38585","grand-projet","type-grand-projet","status-publish","has-post-thumbnail","hentry","category-environment"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ecological restoration of the Rhone at Pierre-B\u00e9nite | CNR<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cnr.tm.fr\/en\/grand-projet\/restauration-ecologique-du-rhone-de-pierre-benite\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ecological restoration of the Rhone at Pierre-B\u00e9nite | CNR\" \/>\n<meta property=\"og:url\" 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