Map Viewing Service (WMS) of the dataset: PPRN of Saint-Denis-en-Bugey

For natural RPPs, the Environmental Code defines two categories of areas (L562-1): risk-prone areas and areas that are not directly exposed to risks but on which measures may be provided for avoid increasing the risk. Depending on the hazard level, each area is subject to a enforceable regulation. The regulations generally distinguish three types of zones: 1- “Building prohibited areas”, so-called “red zones”, when the level of D’aléa is strong and that the general rule is the prohibition on construction; 2- “areas” subject to requirements, referred to as ‘blue zones’, where the hazard level is average and that projects are subject to requirements adapted to the type of issue; 3- Areas not directly exposed to risks, but where constructions, works, development or agricultural, forestry, artisanal, commercial or industrials could aggravate risks or cause new, submitted prohibitions or prescriptions (cf. Article L562-1 of the Environmental Code). This last category applies only to natural RPPs.针对自然风险防护场所（RPPs），法国《环境法典》（L562-1条款）将相关区域划分为两类：易受风险影响区域，以及虽未直接暴露于风险之下但需采取措施防止风险扩大的区域。依据灾害等级，每类区域均需遵守可强制执行的监管规定。监管规则通常将区域划分为三类：1. 建筑禁建区（又称"红区"）：当灾害等级（D’aléa）较高时，通用规则为禁止任何建设行为；2. 合规约束区（又称"蓝区"）：该区域灾害等级为中等，区内建设项目需遵循适配风险类型的合规要求；3. 非直接风险暴露区：该区域虽未直接暴露于风险之下，但区内的建设工程、开发活动或农业、林业、手工业、商业及工业活动可能加剧既有风险或引发新风险，因此需遵守相关禁令或规制要求（详见《环境法典》L562-1条款）。该类区域仅适用于自然风险防护场所（RPPs）。