PPRN: French Flood Risk Prevention Plans Geographic Data

Risk Prevention Plans (PPR) are the key state instrument for monitoring development in areas exposed to major risks, established by the Act of 2 February 1995. The dataset, provided by the Bureau de Recherches Géologiques et Minières, maps existing PPRNs (flood risk plans) for a department using polygons that correspond to affected municipalities or restricted areas. It was last updated on 2020-11-17.

Use Cases

• Mapping flood-prone zones for development planning based on regulatory zoning plans.
• Analyzing land-use restrictions for construction and agriculture based on PPR regulations.
• Assessing municipal exposure to flood hazards based on the polygon envelopes of affected areas.
• Tracking the implementation status of risk plans (prescribed, approved) for departmental oversight.

Strengths

• Based on a defined legal framework (Act of 2 February 1995), providing regulatory authority.
• Includes multiple document types per plan: a presentation note, regulatory zoning plan, and regulation.
• Last update date is explicitly provided (2020-11-17).

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Last updated 2020-11-17; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES

Collection Method

Likely compiled and maintained by departmental directorates of the territories (DDT) as part of the PPR approval process.

Time Range

Plans established from 1995 onward; dataset snapshot from 2020.

Freshness

Last updated 2020-11-17 00:00:00.

Geography

Covers municipalities within a specific French department affected by flood risk plans.