{"id":17993,"date":"2010-10-05T09:41:37","date_gmt":"2010-10-05T07:41:37","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=17993"},"modified":"2010-10-05T09:41:37","modified_gmt":"2010-10-05T07:41:37","slug":"la-situation-relative-a-la-secheresse-en-isere-sameliore-mais","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2010\/10\/05\/la-situation-relative-a-la-secheresse-en-isere-sameliore-mais\/","title":{"rendered":"La situation relative \u00e0 la S\u00e9cheresse en Is\u00e8re s&rsquo;am\u00e9liore mais&#8230;"},"content":{"rendered":"<p><span style=\"color: #000000;\">Le Comit\u00e9 de Vigilance S\u00e9cheresse a \u00e9t\u00e9 consult\u00e9 le 28 septembre 2010 par messagerie \u00e9lectronique afin de faire le point sur l\u2019\u00e9tat de la ressource en eau en Is\u00e8re.<br \/>\nLa situation hydrologique sur l&rsquo;ensemble des cours d&rsquo;eau du d\u00e9partement s&rsquo;est am\u00e9lior\u00e9e gr\u00e2ce aux derniers \u00e9pisodes pluvieux du mois de septembre.<br \/>\nLa plupart des stations hydrologiques montrent, ces derniers jours, des d\u00e9bits dont la valeur se situe entre la m\u00e9diane et la quinquennale humide et les effets dans le temps des \u00e9pisodes pluvieux sont plus marqu\u00e9s.<br \/>\nCependant, il reste encore des cours d&rsquo;eau dont les d\u00e9bits ne sont pas soutenus et sont qualifi\u00e9s de faibles \u00e0 tr\u00e8s faibles pour la saison (Rival et Roizonne notamment). De plus, aucune pluie significative n&rsquo;est pr\u00e9vue dans les jours qui viennent.<br \/>\nEn cons\u00e9quence, les mesures de restrictions en vigueur sont lev\u00e9es au 1er octobre 2010.<br \/>\nToutefois, et m\u00eame si les pr\u00e9l\u00e8vements estivaux les plus importants sont termin\u00e9s (fin de l&rsquo;irrigation agricole), la situation justifie le maintien de la vigilance sur certains bassins de gestion.<br \/>\nIl convient de noter que dans la plaine de Bi\u00e8vre, la rivi\u00e8re Le Rival est encore sur une partie de son parcours en dessous du dixi\u00e8me de son d\u00e9bit moyen interannuel (1\/10\u00e8me du<span style=\"color: #000000;\"> module), ce qui interdit de facto tout pr\u00e9l\u00e8vement dans celle-ci.<br \/>\nLa situation est donc la suivante :<\/span><\/span><span style=\"color: #000000;\"><br \/>\n&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212; Eaux superficielles&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<br \/>\nLes bassins de gestion suivants sont en Vigilance pour les cours d\u2019eau :<br \/>\n&#8211;\u00a0 Affluents du Drac -Bi\u00e8vre<br \/>\n&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212; Eaux souterraines &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<br \/>\nLes bassins de gestion suivants sont en Vigilance pour les nappes d\u2019eau souterraine :<br \/>\n&#8211; Est Lyonnais<\/span><\/p>\n<p><span style=\"color: #000000;\">Cette situation pourra \u00eatre revue dans les semaines \u00e0 venir au vu de l\u2019\u00e9volution de la situation m\u00e9t\u00e9orologique, et des d\u00e9bits des cours d\u2019eau ou des niveaux des nappes du d\u00e9partement.<br \/>\nIl est toutefois rappel\u00e9 que quels que soient les secteurs, les pr\u00e9l\u00e8vements en eau superficiels sont interdits si le d\u00e9bit du cours d\u2019eau est inf\u00e9rieur au 1\/10\u00e8me de son d\u00e9bit moyen interannuel.<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong>Un nouvel arr\u00eat\u00e9-cadre S\u00e9cheresse<\/strong><\/span><\/p>\n<p><span style=\"color: #000000;\">Ce premier arr\u00eat\u00e9 a \u00e9t\u00e9 pris en application du nouvel arr\u00eat\u00e9 fixant le cadre des mesures de gestion et de pr\u00e9servation de la ressource en eau en p\u00e9riode de s\u00e9cheresse, en date du 3 juin 2010. Cet arr\u00eat\u00e9 abroge le pr\u00e9c\u00e9dent qui datait du 31 juillet 2007.<br \/>\nLe nouvel arr\u00eat\u00e9 harmonise les appellations des seuils de situation avec les autres d\u00e9partements de la r\u00e9gion, et en coh\u00e9rence avec les appellations nationales : les situations de vigilance, alerte, risque de s\u00e9cheresse et s\u00e9cheresse aggrav\u00e9e, sont remplac\u00e9es par les situations de vigilance, alerte, crise et crise renforc\u00e9e.<\/span><\/p>\n<p><span style=\"color: #000000;\"> Les seuils de franchissement de ces situations sont toutefois inchang\u00e9s pour les cours d&rsquo;eau. Pour les nappes phr\u00e9atique, la r\u00e9daction a \u00e9t\u00e9 adapt\u00e9e pour permettre une comparaison avec les donn\u00e9es disponibles sur les sites internet de diffusion des donn\u00e9es (ADES et DREAL Rh\u00f4ne-Alpes).<br \/>\nPar ailleurs, il d\u00e9finit 14 bassins de gestion \u00e0 l\u2019int\u00e9rieur desquels les restrictions sont mises en oeuvre. Certaines restrictions ont \u00e9t\u00e9 l\u00e9g\u00e8rement modifi\u00e9es pour plus de simplicit\u00e9 et de lisibilit\u00e9. Par ailleurs, les restrictions sur les usages d\u2019eau potable issue des r\u00e9seaux publics s&rsquo;appliquent aussi bien pour les crises touchant les eaux superficielles que les eaux souterraines.<\/span><\/p>\n<p><span style=\"color: #000000;\">Enfin, les repr\u00e9sentants des exploitants des r\u00e9seaux AEP ont \u00e9t\u00e9 ajout\u00e9s comme membres du comit\u00e9 de vigilance s\u00e9cheresse.<br \/>\nL&rsquo;arr\u00eat\u00e9 cadre (y compris la liste des communes par bassin de gestion), ainsi que tous les arr\u00eat\u00e9s pris en son application pour la mise en oeuvre de restrictions, les compte-rendus des comit\u00e9s de vigilance et les liens vers les sites internet diffusant l&rsquo;information sur les d\u00e9bits des cours d&rsquo;eau ou le niveau des nappe, sont disponibles sur le site internet de la DDT (ex-DDAF) \u00e0 l&rsquo;adresse suivante :<br \/>\nhttp:\/\/ddaf.isere.agriculture.gouv.fr\/article.php3?id_article=397<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La situation relative \u00e0 la S\u00e9cheresse en Is\u00e8re s&rsquo;am\u00e9liore mais la vigilance reste de mise sur une partie du d\u00e9partement<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,47,70],"tags":[1886,4990],"class_list":["post-17993","post","type-post","status-publish","format-standard","hentry","category-ddaf","category-nature","category-territoires-isere","tag-drac-bievre","tag-secheresse"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La situation relative \u00e0 la S\u00e9cheresse en Is\u00e8re s&#039;am\u00e9liore mais... -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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