{"id":22002,"date":"2011-04-21T17:56:31","date_gmt":"2011-04-21T15:56:31","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=22002"},"modified":"2011-04-21T17:56:31","modified_gmt":"2011-04-21T15:56:31","slug":"nappes-deau-souterraine-du-bas-dauphine-en-baisse","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2011\/04\/21\/nappes-deau-souterraine-du-bas-dauphine-en-baisse\/","title":{"rendered":"Nappes d&rsquo;eau souterraine du Bas Dauphin\u00e9 en baisse"},"content":{"rendered":"<p><span style=\"color: rgb(0, 0, 0);\" mce_style=\"color: #000000;\">Le niveau des nappes au 1er avril 2011 est h\u00e9t\u00e9rog\u00e8ne d\u2019une r\u00e9gion \u00e0 l\u2019autre.<br \/>\nEnviron 58% des r\u00e9servoirs affichent un niveau inf\u00e9rieur \u00e0 la normale. C\u2019est le cas sur la plus grande partie du Bassin parisien et dans le Sud-Ouest pour plusieurs grands aquif\u00e8res. On peut citer les nappes de Beauce, du Lut\u00e9tien et du Champigny en Ile-de- France ou encore les nappes du bassin de la Garonne en Midi-Pyr\u00e9n\u00e9es. Cette situation est le r\u00e9sultat de plusieurs ann\u00e9es de d\u00e9ficit pluviom\u00e9trique.<br \/>\nLes secteurs de l\u2019Est de la France (Alsace) et du Sud \/ Sud-Est (Languedoc-Roussillon et Provence) pr\u00e9sentent des niveaux plus favorables.<\/span><\/p>\n<p><b><span style=\"color: rgb(0, 0, 0);\" mce_style=\"color: #000000;\">Tendance d\u2019\u00e9volution du niveau des nappes<\/span><\/b><\/p>\n<p><span style=\"color: rgb(0, 0, 0);\" mce_style=\"color: #000000;\">Une proportion relativement r\u00e9duite des niveaux de nappe est en hausse (30%) en mars. Cette situation n\u2019est pas tr\u00e8s favorable en ce d\u00e9but d\u2019ann\u00e9e qui devrait repr\u00e9senter, sur le cycle hydrologique naturel, la p\u00e9riode de recharge g\u00e9n\u00e9ralis\u00e9e li\u00e9e aux pr\u00e9cipitations hivernales. La situation des niveaux de nappe est ainsi globalement assez perturb\u00e9e, en raison de d\u00e9ficit pluviom\u00e9trique sur certaines r\u00e9gions comme par exemple l\u2019Aquitaine, la Bretagne, et le Centre.<\/span><\/p>\n<blockquote>\n<p><span style=\"color: rgb(0, 51, 102);\" mce_style=\"color: #003366;\">Les nappes du Bas Dauphin\u00e9 en Plaine de Bi\u00e8vre-Valloire pr\u00e9sentent des situations et des \u00e9volutions contrast\u00e9es en mars. Les niveaux sont cependant globalement bas (fr\u00e9quence quinquennale) et \u00e9voluent toujours \u00e0 la baisse sur la Bi\u00e8vre (tendance durable), tandis qu&rsquo;ils remontent faiblement sur la Valloire, o\u00f9 ils \u00e9taient et restent d\u00e9prim\u00e9s (fr\u00e9quence d\u00e9cennale de basses-eaux). La situation relative reste inchang\u00e9e et encore pr\u00e9occupante.<\/span><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Le Bureau de Recherches G\u00e9ologiques et Mini\u00e8res vient de d\u00e9voiler la situation des nappes au premier avril. Celles du Bas Dauphin\u00e9 sont pr\u00e9occupantes!<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[682,776],"class_list":["post-22002","post","type-post","status-publish","format-standard","hentry","category-eau","tag-bas-bauphine","tag-bievre-valloire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nappes d&#039;eau souterraine du Bas Dauphin\u00e9 en baisse -<\/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.sillon38.com\/blog\/2011\/04\/21\/nappes-deau-souterraine-du-bas-dauphine-en-baisse\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nappes d&#039;eau souterraine du Bas Dauphin\u00e9 en baisse -\" \/>\n<meta property=\"og:description\" content=\"Le Bureau de Recherches G\u00e9ologiques et Mini\u00e8res vient de d\u00e9voiler la situation des nappes au premier avril. 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