Dataset Direct Download Service (WFS): Restricted zone of the partial revision of the PPRi of the Issoirian val d’Allier (63DDT20160001) approved on 13/06/2018 — Puy-de-Dôme

For natural PPRs, the Environmental Code defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures can be foreseen to avoid exacerbating the risk. Depending on the hazard level, each area is subject to an enforceable settlement. This PPR defines 2 types of zones: — red zone corresponding to the urbanised areas located in strong hazard and non-urbanised areas, regardless of the level of hazard (fields of expansion of floods to be preserved). In these areas, only new constructions and developments directly linked to the management, maintenance and operation of space, subject to compliance with requirements to reduce vulnerability and very limited extensions of existing buildings. It is subdivided into 3 sub-areas: — UK: area of strong hazards in urban center — RD: zoning of the hazard study produced by Constellium and validated by the Prefect on January 5, 2015 — R: other red zone — orange area corresponding to urbanised areas affected by medium or low hazard where urbanisation is allowed provided that the vulnerability is not aggravated针对自然PPR（Natural PPR），《环境法典（Environmental Code）》于条款L562-1中划定了两类区域：风险暴露区，以及虽未直接面临风险但可通过预先采取措施规避风险加剧的区域。 依据危险等级的不同，每类区域均需遵循可强制执行的管控要求。本PPR划定了两类区域： — 红区（Red Zone）：对应处于高危险等级的城市化区域，以及无论危险等级如何的非城市化区域（即需予以保护的洪水漫溢范围）。此类区域仅允许开展与空间管理、维护及运营直接相关的新建工程与开发活动，且需满足降低脆弱性的相关要求，同时仅可对既有建筑进行极为有限的扩建。红区进一步细分为3个子区域： — UK：城市中心的高危险区域 — RD：由康斯特利姆（Constellium）编制的危险研究划定区域，并于2015年1月5日经省长（Prefect）审核通过 — R：其余红区 — 橙区（Orange Zone）：对应受中低危险等级影响的城市化区域，在不加剧区域脆弱性的前提下，允许开展城市化建设活动。