Natural flood risk prevention plan — Municipalities of the Aveyron Sector — Document — Department of Tarn-et-Garonne

The Risk Prevention Plans (PPR) were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. Their objective is to monitor development in areas exposed to a major risk.
The PPRs are approved by the prefects and generally carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through building prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on agricultural use or practices, etc.).
These plans may be under development (prescribed), implemented in advance or approved.
The RPP file contains a presentation note, a regulatory zoning plan and a regulation. Other graphic documents that are useful for understanding the approach (e.g. hazards, issues, etc.) can be attached. Each PPR is identified by a polygon that corresponds to the set of municipalities
the scope of the prescription when it is in the prescribed state; and the envelope of restricted areas when it is in the approved state.
This geographical table allows to map existing PPRNs on the department.
Each PPRN document in the N_DOCUMENT_PPRN geographical table is linked with its GASPAR code in the format “ddd[PREF|DDT|DDTM|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and the order number of the associated PPR procedure in GASPAR):
1. its administrative procedure for drawing up (or revising) managed in the GASPAR application, on the one hand,
2. its set of numeric spatial data as described in the metadata sheet N_PPRN_AAAANNNN (#0001495).

风险预防计划（Risk Prevention Plans，PPR）由1995年2月2日颁布的《加强环境保护法案》制定，是国家在风险预防领域的核心工具，其目标是对存在重大风险区域的开发活动进行监测。
风险预防计划由省长批准，通常由领土部门管理局（Departmental Directorates of the Territories，DDT）负责实施。此类计划通过对现有或拟建建筑设定建筑禁令或建设要求（包括建设条款、易损性降低工程、农业用途及耕作方式限制等），对土地利用行为进行管制。
此类计划可处于拟定（已规定）、提前实施或获批三种状态。
PPR文件包含说明性文档、管制区划图及管制条例，其他有助于理解该方案的图形文档（如风险分布、相关问题说明等）可作为附件。每份PPR均通过多边形进行标识：当计划处于拟定状态时，该多边形对应规定适用范围内的所有市镇集合；当计划处于获批状态时，则对应限制区域的范围。
本地理数据表可实现部门范围内现有PPRN的空间制图。N_DOCUMENT_PPRN地理数据表中的每份PPRN文档，均与其格式为“ddd[PREF|DDT|DDTM|DREAL]aaaannnn”的加斯帕尔编码（GASPAR）相关联，其中AAAA与NNNN分别对应关联PPR流程在加斯帕尔系统中的参考年份与序号，具体关联内容包括两部分：1. 其在加斯帕尔应用系统中管理的拟定（或修订）行政流程；2. 元数据表N_PPRN_AAAANNNN（#0001495）中描述的全套数值空间数据。