{"id":13667,"date":"2020-12-30T15:05:45","date_gmt":"2020-12-31T01:05:45","guid":{"rendered":"https:\/\/www.service-public.pf\/sau\/?page_id=13667"},"modified":"2026-07-16T12:15:16","modified_gmt":"2026-07-16T22:15:16","slug":"plan-de-preventions-des-risques-naturels","status":"publish","type":"page","link":"https:\/\/www.service-public.pf\/dca\/plan-de-preventions-des-risques-naturels\/","title":{"rendered":"Plan de Pr\u00e9ventions des Risques naturels"},"content":{"rendered":"

PPR : Le Plan de Pr\u00e9vention des Risques naturels<\/strong><\/span><\/h1>\n<\/div><\/div><\/div>
<\/div><\/div><\/span>

1 – Le PPR et ses objectifs<\/span><\/h1><\/span>
<\/div><\/div><\/div>

Avec sa dispersion g\u00e9ographique et la structure g\u00e9ologique de ses \u00eeles, la Polyn\u00e9sie fran\u00e7aise est particuli\u00e8rement vuln\u00e9rable aux al\u00e9as naturels. Les \u00e9v\u00e9nements de 1998 et 1999 qui sont survenus aux Iles-sous-le-Vent a pouss\u00e9 le Pays \u00e0 mettre en place des Plans de Pr\u00e9vention des Risques naturels (PPR) pour chacune des 48 communes du territoire.<\/span><\/h1>\n<\/div>

L\u2019\u00e9tablissement d\u2019un PPR est ordonn\u00e9 par arr\u00eat\u00e9 du conseil des ministres.<\/p>\n

Les PPR sont \u00e9tablis par le Pays ou par un organisme ou technicien comp\u00e9tent, sous le contr\u00f4le d\u2019une commission des P.P.R. dont la composition est d\u00e9termin\u00e9e par arr\u00eat\u00e9 du conseil des ministres.<\/p>\n

Le dossier du PPRn contient :<\/p>\n

    \n
  • une note de pr\u00e9sentation du contexte et de la proc\u00e9dure qui a \u00e9t\u00e9 men\u00e9e : les raisons de la prescription du PPR , les ph\u00e9nom\u00e8nes naturels connus, les al\u00e9as, les enjeux, les objectifs recherch\u00e9s pour la pr\u00e9vention des risques, le choix du zonage et les mesures r\u00e9glementaires. \u00fc un ou des documents graphiques qui d\u00e9limitent les zones r\u00e9glement\u00e9es par le PPR.<\/li>\n
  • un r\u00e8glement fixant les conditions d’am\u00e9nagement et d’occupation du sol pour chaque zone. L\u2019objet du PPR est de d\u00e9limiter les zones expos\u00e9es directement ou indirectement \u00e0 un risque et d\u2019y r\u00e9glementer l\u2019utilisation et l\u2019occupation des sols. Cette r\u00e9glementation va de l\u2019interdiction de construire \u00e0 la possibilit\u00e9 de construire sous certaines conditions.<\/li>\n<\/ul>\n<\/div>
    <\/div><\/div><\/span>

    2. Quels sont les al\u00e9as pris en compte dans les PPR<\/h1><\/span>
    <\/div><\/div><\/div>

    Trois al\u00e9as ont \u00e9t\u00e9 cartographi\u00e9s en Polyn\u00e9sie fran\u00e7aise :<\/p>\n

    – l\u2019al\u00e9a mouvements de terrain (glissement de terrain, chutes de blocs, coul\u00e9es de boue)<\/p>\n

    – l\u2019al\u00e9a inondation par d\u00e9<\/span>bordement de cours d\u2019eau,<\/span><\/p>\n

    – l\u2019al\u00e9a submersion marine, li\u00e9 aux cyclones ou aux tsunamis.<\/p>\n<\/div>

    <\/div><\/div><\/span>

    3. Al\u00e9a, enjeux, risques<\/h1><\/span>
    <\/div><\/div><\/div>

    Le risque est le croisement d\u2019un ph\u00e9nom\u00e8ne (al\u00e9a) et d\u2019un enjeu (personnes, biens). La pr\u00e9vention du risque a pour objectif initial d\u2019annuler le risque en cherchant \u00e0 modifier l\u2019un ou l\u2019autre terme de l\u2019\u00e9quation. Dans la quasi-totalit\u00e9 des cas, il n\u2019est pas possible d\u2019annuler l\u2019al\u00e9a.<\/p>\n

    Le premier objectif de la pr\u00e9vention est de ne pas exposer de nouveaux enjeux dans les lieux o\u00f9 un ph\u00e9nom\u00e8ne a \u00e9t\u00e9 \u00e9valu\u00e9 comme dangereux. Dans les zones d\u00e9j\u00e0 urbanis\u00e9es, la vuln\u00e9rabilit\u00e9 devient une notion essentielle.<\/p>\n<\/div>

    <\/span><\/div>
    <\/div><\/div><\/span>

    4. Proc\u00e9dure d\u2019approbation<\/h1><\/span>
    <\/div><\/div><\/div>

    PHASES D'INSTRUCTION<\/h2><\/div><\/div>\"PHASES<\/span><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":46,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"class_list":["post-13667","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/pages\/13667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/comments?post=13667"}],"version-history":[{"count":35,"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/pages\/13667\/revisions"}],"predecessor-version":[{"id":17418,"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/pages\/13667\/revisions\/17418"}],"wp:attachment":[{"href":"https:\/\/www.service-public.pf\/dca\/wp-json\/wp\/v2\/media?parent=13667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}