{"id":15251,"date":"2025-08-27T09:51:06","date_gmt":"2025-08-27T07:51:06","guid":{"rendered":"https:\/\/bwi.earth\/?p=15251"},"modified":"2025-08-27T12:57:19","modified_gmt":"2025-08-27T10:57:19","slug":"risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques","status":"publish","type":"post","link":"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/","title":{"rendered":"Risques d\u2019inondation sur les sites SEVESO : cadre r\u00e9glementaire, retours d\u2019exp\u00e9rience et indicateurs techniques"},"content":{"rendered":"    <section class=\"gut-content\">\n        <div class=\"wrap\">\n            <p>Les \u00e9pisodes d\u2019inondation se multiplient en Europe et dans le monde, amplifi\u00e9s par le changement climatique. Au-del\u00e0 des impacts humains et mat\u00e9riels, ces ph\u00e9nom\u00e8nes naturels repr\u00e9sentent un risque critique pour les sites class\u00e9s SEVESO, c\u2019est-\u00e0-dire les installations industrielles manipulant ou stockant des substances dangereuses.<\/p>\n<p data-start=\"603\" data-end=\"678\">Une inondation sur un site SEVESO peut avoir des cons\u00e9quences en cha\u00eene :<\/p>\n<ul data-start=\"679\" data-end=\"1146\">\n<li data-start=\"679\" data-end=\"790\">\n<p data-start=\"681\" data-end=\"790\"><strong data-start=\"681\" data-end=\"705\">Perte de confinement<\/strong> : des produits chimiques ou p\u00e9troliers peuvent \u00eatre rel\u00e2ch\u00e9s dans l\u2019environnement.<\/p>\n<\/li>\n<li data-start=\"791\" data-end=\"894\">\n<p data-start=\"793\" data-end=\"894\"><strong data-start=\"793\" data-end=\"842\">Dysfonctionnement des \u00e9quipements de s\u00e9curit\u00e9<\/strong> : pompes, vannes, syst\u00e8mes \u00e9lectriques submerg\u00e9s.<\/p>\n<\/li>\n<li data-start=\"895\" data-end=\"1019\">\n<p data-start=\"897\" data-end=\"1019\"><strong data-start=\"897\" data-end=\"926\">Propagation des polluants<\/strong> : les eaux de crue transportent les substances toxiques bien au-del\u00e0 du p\u00e9rim\u00e8tre du site.<\/p>\n<\/li>\n<li data-start=\"1020\" data-end=\"1146\">\n<p data-start=\"1022\" data-end=\"1146\"><strong data-start=\"1022\" data-end=\"1059\">Impacts humains et r\u00e9putationnels<\/strong> : risques pour les riverains, co\u00fbts \u00e9conomiques, atteinte \u00e0 l\u2019image de l\u2019exploitant.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1148\" data-end=\"1487\">L\u2019accident de l\u2019usine <strong data-start=\"1170\" data-end=\"1196\">AZF \u00e0 Toulouse en 2001<\/strong> n\u2019\u00e9tait pas li\u00e9 \u00e0 une inondation, mais il reste dans les m\u00e9moires comme un rappel des dangers d\u2019une perte de ma\u00eetrise sur de telles installations. Aujourd\u2019hui, la combinaison entre <strong data-start=\"1378\" data-end=\"1401\">al\u00e9as hydrologiques<\/strong> et <strong data-start=\"1405\" data-end=\"1440\">pr\u00e9sence de substances \u00e0 risque<\/strong> est prise tr\u00e8s au s\u00e9rieux par les autorit\u00e9s.<\/p>\n<p data-start=\"1534\" data-end=\"1876\">En France comme dans l\u2019Union europ\u00e9enne, la r\u00e9glementation SEVESO impose aux exploitants d\u2019identifier tous les sc\u00e9narios accidentels possibles, y compris les risques naturels. Les <strong data-start=\"1714\" data-end=\"1771\">Plans de Pr\u00e9vention des Risques Technologiques (PPRT)<\/strong> et les <strong data-start=\"1779\" data-end=\"1832\">Plans de Pr\u00e9vention des Risques Inondation (PPRI)<\/strong> tendent de plus en plus \u00e0 \u00eatre articul\u00e9s.<\/p>\n<p data-start=\"1878\" data-end=\"2160\">Cependant, la r\u00e9alit\u00e9 montre que de nombreux sites n\u2019ont pas encore int\u00e9gr\u00e9 des donn\u00e9es fines de pr\u00e9vision hydrologique dans leur analyse de vuln\u00e9rabilit\u00e9. Les crues rapides, les remont\u00e9es de nappes ou les ruissellements urbains ou r\u00e9activation de vall\u00e9e s\u00e8ches constituent autant de menaces encore sous-estim\u00e9es.<\/p>\n<p data-start=\"2836\" data-end=\"3141\">La ma\u00eetrise du risque industriel ne peut plus \u00eatre pens\u00e9e sans la dimension climatique et hydrologique. Les sites SEVESO, en particulier ceux situ\u00e9s \u00e0 proximit\u00e9 de fleuves, de rivi\u00e8re fortement r\u00e9actives ou de plaines inondables par ruissellement, doivent passer d\u2019une logique r\u00e9active \u00e0 une logique pr\u00e9visionnelle et proactive.<\/p>\n<h3 data-start=\"366\" data-end=\"413\">1. Cadre r\u00e9glementaire fran\u00e7ais et europ\u00e9en<\/h3>\n<ul data-start=\"415\" data-end=\"1410\">\n<li data-start=\"415\" data-end=\"628\">\n<p data-start=\"417\" data-end=\"628\"><strong data-start=\"417\" data-end=\"465\">Directive europ\u00e9enne 2012\/18\/UE (SEVESO III)<\/strong> : entr\u00e9e en vigueur le 1er juin 2015, elle impose l\u2019int\u00e9gration des al\u00e9as naturels (inondations, s\u00e9ismes, temp\u00eates) dans l\u2019\u00e9valuation des sc\u00e9narios accidentels.<\/p>\n<\/li>\n<li data-start=\"629\" data-end=\"1410\">\n<p data-start=\"631\" data-end=\"670\"><strong data-start=\"631\" data-end=\"666\">Transposition en droit fran\u00e7ais<\/strong> :<\/p>\n<ul data-start=\"673\" data-end=\"1410\">\n<li data-start=\"673\" data-end=\"853\">\n<p data-start=\"675\" data-end=\"853\"><strong data-start=\"675\" data-end=\"723\">Code de l\u2019Environnement \u2013 Livre V, Titre Ier<\/strong> (articles L.515-32 \u00e0 L.515-36 pour les \u00e9tablissements SEVESO, et articles R.512-5 \u00e0 R.512-46 pour les prescriptions g\u00e9n\u00e9rales).<\/p>\n<\/li>\n<li data-start=\"856\" data-end=\"971\">\n<p data-start=\"858\" data-end=\"971\"><strong data-start=\"858\" data-end=\"894\">D\u00e9cret n\u00b02014-285 du 3 mars 2014<\/strong> : adapte la r\u00e9glementation fran\u00e7aise aux nouvelles obligations SEVESO III.<\/p>\n<\/li>\n<li data-start=\"974\" data-end=\"1224\">\n<p data-start=\"976\" data-end=\"1224\"><strong data-start=\"976\" data-end=\"1043\">Arr\u00eat\u00e9 minist\u00e9riel du 26 mai 2014 relatif aux \u00e9tudes de dangers<\/strong> : pr\u00e9cise que l\u2019exploitant doit \u00ab d\u00e9montrer la ma\u00eetrise des risques y compris face aux \u00e9v\u00e9nements naturels susceptibles d\u2019affecter l\u2019\u00e9tablissement \u00bb (inondations, s\u00e9ismes, etc.).<\/p>\n<\/li>\n<li data-start=\"1227\" data-end=\"1410\">\n<p data-start=\"1229\" data-end=\"1410\"><strong data-start=\"1229\" data-end=\"1340\">Circulaire du 10 mai 2010 relative \u00e0 la prise en compte des risques d\u2019inondation dans les \u00e9tudes de dangers<\/strong> (DGPR\/SDRA\/SEI1) : impose l\u2019int\u00e9gration des PPRI dans les analyses.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"1412\" data-end=\"1586\">Ces textes obligent les exploitants SEVESO \u00e0 croiser les donn\u00e9es hydrologiques (PPRI, crues historiques, projections climatiques) avec leur analyse de risques internes.<\/p>\n<h3 data-start=\"1593\" data-end=\"1678\">2. Retours d\u2019exp\u00e9rience (REX) : incidents marquants d\u2019inondation sur sites SEVESO<\/h3>\n<ul data-start=\"1680\" data-end=\"2602\">\n<li data-start=\"1680\" data-end=\"1898\">\n<p data-start=\"1682\" data-end=\"1898\"><strong data-start=\"1682\" data-end=\"1705\">\u00cele-de-France, 2016<\/strong> : crue du Loing ayant impact\u00e9 une verrerie SEVESO seuil haut, n\u00e9cessitant des mesures d\u2019urgence pour maintenir les utilit\u00e9s (<a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"1831\" data-end=\"1894\">ARIA n\u00b047943<\/a>).<\/p>\n<\/li>\n<li data-start=\"1899\" data-end=\"2127\">\n<p data-start=\"1901\" data-end=\"2127\"><strong data-start=\"1901\" data-end=\"1923\">H\u00e9ry (Yonne), 1998<\/strong> : inondation de 12 cm d\u2019eau sur le site Davey Bickford (SEVESO 2), ayant conduit \u00e0 la mise en place d\u2019un <strong data-start=\"2029\" data-end=\"2058\">Plan d\u2019Urgence Inondation<\/strong> (<a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"2060\" data-end=\"2123\">ARIA n\u00b016755<\/a>).<\/p>\n<\/li>\n<li data-start=\"2128\" data-end=\"2347\">\n<p data-start=\"2130\" data-end=\"2347\"><strong data-start=\"2130\" data-end=\"2156\">Ravenne (Italie), 2023<\/strong> : inondation d\u2019un parc industriel abritant 9 sites SEVESO, activation d\u2019un comit\u00e9 d\u2019urgence et suspension des productions (<a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"2280\" data-end=\"2343\">ARIA n\u00b064250<\/a>).<\/p>\n<\/li>\n<li data-start=\"2348\" data-end=\"2602\">\n<p data-start=\"2350\" data-end=\"2602\"><strong data-start=\"2350\" data-end=\"2371\">Royaume-Uni, 2013<\/strong> : temp\u00eate + mar\u00e9e exceptionnelle, inondation d\u2019installations de stockage souterrain d\u2019hydrocarbures, endommagement massif des syst\u00e8mes \u00e9lectriques et de contr\u00f4le (<a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\" data-start=\"2535\" data-end=\"2598\">ARIA n\u00b046146<\/a>).<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2609\" data-end=\"2670\">3. Grille technique des seuils hydrologiques \u00e0 surveiller<\/h3>\n<p data-start=\"2672\" data-end=\"2794\">Pour une gestion op\u00e9rationnelle, les sites SEVESO expos\u00e9s \u00e0 l\u2019inondation devraient surveiller les indicateurs suivants :<\/p>\n<div class=\"_tableContainer_sk2ct_1\">\n<div class=\"_tableWrapper_sk2ct_13 group flex w-fit flex-col-reverse\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2796\" data-end=\"4099\">\n<thead data-start=\"2796\" data-end=\"2931\">\n<tr data-start=\"2796\" data-end=\"2931\">\n<th data-start=\"2796\" data-end=\"2813\" data-col-size=\"md\"><strong data-start=\"2798\" data-end=\"2812\">Indicateur<\/strong><\/th>\n<th data-start=\"2813\" data-end=\"2876\" data-col-size=\"md\"><strong data-start=\"2815\" data-end=\"2875\">Seuil critique (\u00e0 titre indicatif, \u00e0 adapter localement)<\/strong><\/th>\n<th data-start=\"2876\" data-end=\"2903\" data-col-size=\"md\"><strong data-start=\"2878\" data-end=\"2902\">Cons\u00e9quence attendue<\/strong><\/th>\n<th data-start=\"2903\" data-end=\"2931\" data-col-size=\"md\"><strong data-start=\"2905\" data-end=\"2929\">Actions recommand\u00e9es<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3068\" data-end=\"4099\">\n<tr data-start=\"3068\" data-end=\"3235\">\n<td data-start=\"3068\" data-end=\"3108\" data-col-size=\"md\">D\u00e9bit de la rivi\u00e8re principale (m\u00b3\/s)<\/td>\n<td data-col-size=\"md\" data-start=\"3108\" data-end=\"3141\">20\u201350 ans de p\u00e9riode de retour<\/td>\n<td data-col-size=\"md\" data-start=\"3141\" data-end=\"3174\">Risque de d\u00e9bordement localis\u00e9<\/td>\n<td data-col-size=\"md\" data-start=\"3174\" data-end=\"3235\">Pr\u00e9-alerte interne, v\u00e9rification des stockages ext\u00e9rieurs<\/td>\n<\/tr>\n<tr data-start=\"3236\" data-end=\"3431\">\n<td data-start=\"3236\" data-end=\"3300\" data-col-size=\"md\">Niveau d\u2019eau \u00e0 proximit\u00e9 du site (m NGF ou cote altim\u00e9trique)<\/td>\n<td data-col-size=\"md\" data-start=\"3300\" data-end=\"3355\">Approche des seuils PPRI (crue d\u00e9cennale\/centennale)<\/td>\n<td data-col-size=\"md\" data-start=\"3355\" data-end=\"3388\">Risque de submersion partielle<\/td>\n<td data-col-size=\"md\" data-start=\"3388\" data-end=\"3431\">Activation du Plan d\u2019Urgence Inondation<\/td>\n<\/tr>\n<tr data-start=\"3432\" data-end=\"3610\">\n<td data-start=\"3432\" data-end=\"3462\" data-col-size=\"md\">Pluviom\u00e9trie horaire (mm\/h)<\/td>\n<td data-col-size=\"md\" data-start=\"3462\" data-end=\"3489\">&gt;30 mm\/h (pluie intense)<\/td>\n<td data-col-size=\"md\" data-start=\"3489\" data-end=\"3543\">Ruissellements rapides, saturation r\u00e9seaux pluviaux<\/td>\n<td data-col-size=\"md\" data-start=\"3543\" data-end=\"3610\">Mobilisation \u00e9quipes de crise, mise en s\u00e9curit\u00e9 zones sensibles<\/td>\n<\/tr>\n<tr data-start=\"3611\" data-end=\"3780\">\n<td data-start=\"3611\" data-end=\"3650\" data-col-size=\"md\">Pluviom\u00e9trie cumul\u00e9e sur 24\u201372h (mm)<\/td>\n<td data-col-size=\"md\" data-start=\"3650\" data-end=\"3680\">&gt;80\u2013100 mm\/24h (selon sols)<\/td>\n<td data-col-size=\"md\" data-start=\"3680\" data-end=\"3717\">Crue torrentielle, mont\u00e9e de nappe<\/td>\n<td data-col-size=\"md\" data-start=\"3717\" data-end=\"3780\">Surveillance renforc\u00e9e, arr\u00eat pr\u00e9ventif de certaines unit\u00e9s<\/td>\n<\/tr>\n<tr data-start=\"3781\" data-end=\"3939\">\n<td data-start=\"3781\" data-end=\"3827\" data-col-size=\"md\">Niveau de nappe phr\u00e9atique (m sous surface)<\/td>\n<td data-col-size=\"md\" data-start=\"3827\" data-end=\"3834\">&lt;1 m<\/td>\n<td data-col-size=\"md\" data-start=\"3834\" data-end=\"3893\">Risque de remont\u00e9e dans caves, galeries, cuves enterr\u00e9es<\/td>\n<td data-col-size=\"md\" data-start=\"3893\" data-end=\"3939\">V\u00e9rification des cuves, activation pompage<\/td>\n<\/tr>\n<tr data-start=\"3940\" data-end=\"4099\">\n<td data-start=\"3940\" data-end=\"3984\" data-col-size=\"md\">Pr\u00e9visions mar\u00e9graphiques (sites c\u00f4tiers)<\/td>\n<td data-col-size=\"md\" data-start=\"3984\" data-end=\"4020\">Mar\u00e9e + surcote &gt; seuil de digues<\/td>\n<td data-col-size=\"md\" data-start=\"4020\" data-end=\"4040\">Submersion marine<\/td>\n<td data-col-size=\"md\" data-start=\"4040\" data-end=\"4099\">Protection des installations c\u00f4ti\u00e8res, fermeture vannes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"4101\" data-end=\"4148\">Ces seuils doivent \u00eatre adapt\u00e9s en fonction :<\/p>\n<ul data-start=\"4149\" data-end=\"4371\">\n<li data-start=\"4149\" data-end=\"4174\">\n<p data-start=\"4151\" data-end=\"4174\">des <strong data-start=\"4155\" data-end=\"4170\">PPRI locaux<\/strong> ;<\/p>\n<\/li>\n<li data-start=\"4175\" data-end=\"4220\">\n<p data-start=\"4177\" data-end=\"4220\">des <strong data-start=\"4181\" data-end=\"4216\">caract\u00e9ristiques topographiques<\/strong> ;<\/p>\n<\/li>\n<li data-start=\"4221\" data-end=\"4263\">\n<p data-start=\"4223\" data-end=\"4263\">des <strong data-start=\"4227\" data-end=\"4259\">donn\u00e9es historiques de crues<\/strong> ;<\/p>\n<\/li>\n<li data-start=\"4264\" data-end=\"4371\">\n<p data-start=\"4266\" data-end=\"4371\">et des <strong data-start=\"4273\" data-end=\"4368\">vuln\u00e9rabilit\u00e9s sp\u00e9cifiques de chaque site (\u00e9quipements \u00e9lectriques, stockages, acc\u00e8s, etc.)<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4378\" data-end=\"4441\">4. Recommandations de BWI pour les exploitants SEVESO<\/h3>\n<ol data-start=\"4443\" data-end=\"4963\">\n<li data-start=\"4443\" data-end=\"4544\"><strong>D\u00e9finir le p\u00e9rim\u00e8tre <span style=\"text-decoration: underline;\">r\u00e9el<\/span> du risque inondation <\/strong>: par exemple, les <span data-teams=\"true\">potentiels impacts des d\u00e9bordements de cours d&rsquo;eau sur les routes \u00e0 proximit\u00e9 du site SEVESO sont r\u00e9guli\u00e8rement oubli\u00e9s ; or, les approvisionnement (pas d&rsquo;acc\u00e8s pour les \u00e9quipes de r\u00e9paration) et livraisons (probl\u00e8me de stockage de la production) s&rsquo;en trouveraient largement paralys\u00e9s.<\/span><\/li>\n<li data-start=\"4443\" data-end=\"4544\">\n<p data-start=\"4446\" data-end=\"4544\"><strong data-start=\"4446\" data-end=\"4514\">Int\u00e9grer les donn\u00e9es hydrologiques temps r\u00e9el et pr\u00e9visionnelles<\/strong> dans les \u00e9tudes de dangers et dans les indicateurs de suivi op\u00e9rationnel du quotidien.<\/p>\n<\/li>\n<li data-start=\"4545\" data-end=\"4652\">\n<p data-start=\"4548\" data-end=\"4652\"><strong data-start=\"4548\" data-end=\"4584\">D\u00e9finir des seuils op\u00e9rationnels<\/strong> propres au site et les coupler \u00e0 un syst\u00e8me d\u2019alerte automatique.<\/p>\n<\/li>\n<li data-start=\"4653\" data-end=\"4756\">\n<p data-start=\"4656\" data-end=\"4756\"><strong data-start=\"4656\" data-end=\"4704\">Mettre en place un Plan d\u2019Urgence Inondation<\/strong> \u00e0 afficher dans les zones d\u00e9di\u00e9es du site.<\/p>\n<\/li>\n<li data-start=\"4757\" data-end=\"4863\">\n<p data-start=\"4760\" data-end=\"4863\"><strong data-start=\"4760\" data-end=\"4782\">Former les \u00e9quipes<\/strong> \u00e0 la gestion des crises hydrologiques (exercices avec sc\u00e9narios d\u2019inondation).<\/p>\n<\/li>\n<li data-start=\"4864\" data-end=\"4963\">\n<p data-start=\"4867\" data-end=\"4963\"><strong data-start=\"4867\" data-end=\"4914\">Associer les riverains et autorit\u00e9s locales<\/strong> pour garantir la coh\u00e9rence entre PPRI et PPRT.<\/p>\n<\/li>\n<\/ol>\n<h3 style=\"text-align: center;\" data-start=\"4970\" data-end=\"4985\">*** En r\u00e9sum\u00e9 : les inondations en environnement SEVESO sont plus que jamais \u00e0 prendre en compte \u00e0 l&rsquo;heure du d\u00e9r\u00e8glement climatique ***<\/h3>\n<p data-start=\"4987\" data-end=\"5330\">Les inondations repr\u00e9sentent un <strong data-start=\"5019\" data-end=\"5037\">al\u00e9a aggravant<\/strong> pour les sites SEVESO, susceptible de transformer un \u00e9v\u00e9nement naturel en accident industriel majeur.<br data-start=\"5139\" data-end=\"5142\">La r\u00e9glementation europ\u00e9enne et fran\u00e7aise impose d\u00e9sormais une <strong data-start=\"5205\" data-end=\"5233\">int\u00e9gration syst\u00e9matique<\/strong> de ces risques, mais les retours d\u2019exp\u00e9rience montrent que la <strong data-start=\"5296\" data-end=\"5327\">vuln\u00e9rabilit\u00e9 demeure forte<\/strong>.<\/p>\n<p data-start=\"5332\" data-end=\"5533\">Il rel\u00e8ve de la responsabilit\u00e9 p\u00e9nale des directeurs de sites de passer d\u2019une logique <strong data-start=\"5377\" data-end=\"5389\">r\u00e9active<\/strong> \u00e0 une logique <strong data-start=\"5404\" data-end=\"5420\">anticipative<\/strong>, fond\u00e9e sur des donn\u00e9es hydrologiques fines, des seuils op\u00e9rationnels et une gouvernance int\u00e9gr\u00e9e des risques. Dans cette optique, les pr\u00e9visions hydrologiques associ\u00e9es \u00e0 un syst\u00e8me d&rsquo;alertes pr\u00e9coces peuvent utilement contribuer \u00e0 assurer conformit\u00e9 et s\u00e9r\u00e9nit\u00e9 face au risque de crue &#8211; qui peut \u00eatre mortel pour une entreprise, au m\u00eame titre qu&rsquo;un incendie.<\/p>\n<p data-start=\"5332\" data-end=\"5533\">Une meilleure anticipation des crues est donc non seulement un gage de s\u00e9curit\u00e9 environnementale, mais aussi un facteur de comp\u00e9titivit\u00e9 pour les industriels !&nbsp;<\/p>\n<p data-start=\"5332\" data-end=\"5533\">Pour d\u00e9couvrir comment BWI peut vous fournir des pr\u00e9visions hydrologiques utiles \u00e0 votre surveillance des risques, <a href=\"https:\/\/bwi.earth\/fr\/contact-bwi\/\" target=\"_blank\" rel=\"noopener\">contactez-nous<\/a>&nbsp;!<\/p>\n        <\/div>\n    <\/section>\n","protected":false},"excerpt":{"rendered":"<p>Les sites SEVESO sont expos\u00e9s \u00e0 un risque sous-estim\u00e9 : l\u2019inondation.<br \/>\nLes crues rapides peuvent transformer un al\u00e9a naturel en accident industriel majeur, avec perte de confinement et diffusion de substances dangereuses.<br \/>\nEn Europe comme en France, la directive SEVESO III et le Code de l\u2019environnement imposent d\u00e9sormais d\u2019int\u00e9grer ces sc\u00e9narios hydrologiques dans les \u00e9tudes de dangers et les plans d\u2019urgence.<br \/>\n\u00c0 travers des retours d\u2019exp\u00e9rience r\u00e9cents (France, Italie, Royaume-Uni) et une grille technique de seuils \u00e0 surveiller, cet article d\u00e9taille comment une approche anticipative et bas\u00e9e sur la donn\u00e9e hydrologique peut renforcer la r\u00e9silience des sites sensibles.<\/p>\n","protected":false},"author":5,"featured_media":15246,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[422],"tags":[420,419],"class_list":["post-15251","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hydrologie","tag-france-3","tag-hydrologie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Risques d\u2019inondation sur les sites SEVESO : cadre r\u00e9glementaire, retours d\u2019exp\u00e9rience et indicateurs techniques - Blue Water Intelligence (BWI)<\/title>\n<meta name=\"description\" content=\"Les sites SEVESO sont vuln\u00e9rables aux inondations. D\u00e9couvrez comment la r\u00e9glementation (SEVESO III, Code de l\u2019environnement) et les donn\u00e9es hydrologiques permettent d\u2019anticiper ces risques et de renforcer la s\u00e9curit\u00e9 industrielle.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Risques d\u2019inondation sur les sites SEVESO : cadre r\u00e9glementaire, retours d\u2019exp\u00e9rience et indicateurs techniques - Blue Water Intelligence (BWI)\" \/>\n<meta property=\"og:description\" content=\"Les sites SEVESO sont vuln\u00e9rables aux inondations. D\u00e9couvrez comment la r\u00e9glementation (SEVESO III, Code de l\u2019environnement) et les donn\u00e9es hydrologiques permettent d\u2019anticiper ces risques et de renforcer la s\u00e9curit\u00e9 industrielle.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/\" \/>\n<meta property=\"og:site_name\" content=\"Blue Water Intelligence (BWI)\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-27T07:51:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-27T10:57:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bwi.earth\/wp-content\/uploads\/2025\/08\/adan-hernandez-A2x295wzBlY-unsplash.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1081\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jeremy Fain\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jeremy Fain\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/\"},\"author\":{\"name\":\"Jeremy Fain\",\"@id\":\"https:\/\/bwi.earth\/fr\/#\/schema\/person\/a95330f4eb05b3d48098e1681dc57bcf\"},\"headline\":\"Risques d\u2019inondation sur les sites SEVESO : cadre r\u00e9glementaire, retours d\u2019exp\u00e9rience et indicateurs techniques\",\"datePublished\":\"2025-08-27T07:51:06+00:00\",\"dateModified\":\"2025-08-27T10:57:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/\"},\"wordCount\":17,\"publisher\":{\"@id\":\"https:\/\/bwi.earth\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bwi.earth\/wp-content\/uploads\/2025\/08\/adan-hernandez-A2x295wzBlY-unsplash.jpg\",\"keywords\":[\"france\",\"hydrologie\"],\"articleSection\":[\"hydrologie\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/\",\"url\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/\",\"name\":\"Risques d\u2019inondation sur les sites SEVESO : cadre r\u00e9glementaire, retours d\u2019exp\u00e9rience et indicateurs techniques - Blue Water Intelligence (BWI)\",\"isPartOf\":{\"@id\":\"https:\/\/bwi.earth\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/bwi.earth\/fr\/risques-dinondation-sur-les-sites-seveso-cadre-reglementaire-retours-dexperience-et-indicateurs-techniques\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/bwi.earth\/wp-content\/uploads\/2025\/08\/adan-hernandez-A2x295wzBlY-unsplash.jpg\",\"datePublished\":\"2025-08-27T07:51:06+00:00\",\"dateModified\":\"2025-08-27T10:57:19+00:00\",\"description\":\"Les sites SEVESO sont vuln\u00e9rables aux inondations. 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