{"id":100,"date":"2013-12-08T23:50:43","date_gmt":"2013-12-08T22:50:43","guid":{"rendered":"http:\/\/sdm-lesmesnuls.fr\/?p=100"},"modified":"2015-12-28T00:29:51","modified_gmt":"2015-12-27T23:29:51","slug":"les-nappes-phreatiques","status":"publish","type":"post","link":"https:\/\/sdm-lesmesnuls.fr\/?p=100","title":{"rendered":"Les nappes phr\u00e9atiques"},"content":{"rendered":"<p style=\"text-align: justify;\">La commune des Mesnuls est situ\u00e9e sur la nappe dite du tertiaire du Mantois \u00e0 l\u2019Hurepoix qui couvre une superficie de 2423 km\u00b2, principalement dans les d\u00e9partements de l\u2019Eure, de Paris, des Yvelines, de l\u2019Essonne, des Hauts-de-Seine et du Val de Marne.<br \/>\nL\u2019occupation g\u00e9n\u00e9rale du sol se r\u00e9partit entre les territoires artificialis\u00e9s (32 %), les terres agricoles (40 %), les for\u00eats (26 %) et les zones humides et surfaces en eau (2 %). Les pr\u00e9l\u00e8vements se r\u00e9partissent entre les collectivit\u00e9s (95 %) et les usines (5%). L\u2019eau distribu\u00e9e aux Mesnuls est d\u2019origine souterraine comme 80 % de l\u2019eau distribu\u00e9e dans les Yvelines. Le niveau de la nappe est sensible aux pr\u00e9cipitations, avec un mois de d\u00e9calage, et les s\u00e9cheresses ont des effets durables, ils se r\u00e9percutent sur les ann\u00e9es suivantes.<img loading=\"lazy\" decoding=\"async\" class=\" wp-image-302 alignright\" src=\"https:\/\/i0.wp.com\/www.lesmesnulsmonvillage.fr\/wp\/wp-content\/uploads\/2015\/11\/Piezometrie72a081-300x197.png?resize=490%2C321\" alt=\"Piezometrie72a08\" width=\"490\" height=\"321\" data-recalc-dims=\"1\" \/><\/p>\n<p style=\"text-align: justify;\">La courbe ci-contre repr\u00e9sente le niveau de la nappe mesur\u00e9e \u00e0 de seuils s\u00e9cheresse. Malgr\u00e9 une remont\u00e9e li\u00e9e aux pluies de d\u00e9but f\u00e9vrier, le passage au-dessus du seuil de crise en 2008 n\u2019est pas acquis. Pour les raisons \u00e9voqu\u00e9es ci-dessus (occupation g\u00e9n\u00e9rale du sol, r\u00e9partition des pr\u00e9l\u00e8vements, origine\u00a0de l\u2019eau distribu\u00e9e, effets durables des s\u00e9cheresses), la nappe phr\u00e9atique du tertiaire du Mantois \u00e0 l\u2019Hurepoix est\u00a0donc fragile.<\/p>\n<p style=\"text-align: justify;\">Pour plus d\u2019informations : <a href=\"http:\/\/www.eau-seine-normandie.fr\" target=\"_blank\">www.eau-seine-normandie.fr<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La commune des Mesnuls est situ\u00e9e sur la nappe dite du tertiaire du Mantois \u00e0 l\u2019Hurepoix qui couvre une superficie de 2423 km\u00b2, principalement dans les d\u00e9partements de l\u2019Eure, de Paris, des Yvelines, de l\u2019Essonne, des Hauts-de-Seine et du Val <a class=\"more-link\" href=\"https:\/\/sdm-lesmesnuls.fr\/?p=100\">&#8230;.. LIRE LA SUITE \u2192<\/a><\/p>\n","protected":false},"author":1,"featured_media":462,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[3],"tags":[18],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/sdm-lesmesnuls.fr\/wp-content\/uploads\/CycleEau2-e1451258974561.png?fit=600%2C242&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p71w7n-1C","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/posts\/100"}],"collection":[{"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=100"}],"version-history":[{"count":2,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":463,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/posts\/100\/revisions\/463"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=\/wp\/v2\/media\/462"}],"wp:attachment":[{"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdm-lesmesnuls.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}