Boundaries for different stages of a Natural Risk Prevention Plan (PPRN) for flooding from the Charente River in the commune of La Vallée, Charente-Maritime. The dataset includes prescribed, approved, and study perimeters, each with legal effects from specific dates. It was published by the Bureau de Recherches Géologiques et Minières (BRGM) and last updated on September 17, 2021.
Use Cases
- Mapping regulated flood zones based on approved PPRN perimeters.
- Tracking the evolution of risk exposure areas from prescription to approval.
- Studying the spatial extent of hazard analysis within the defined study envelope.
Strengths
- Perimeters are defined by official acts with specified effective dates.
- Distinguishes between three key planning stages: prescribed, approved, and study.
Limitations
- Description metadata is limited; actual data quality requires manual inspection after download.
- Last updated 2021-09-17 00:00:00; freshness should be verified.
- Column-level documentation is absent; field semantics must be inferred after download.
Provenance
- Source
- BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES (BRGM)
- Freshness
- Last updated 2021-09-17 00:00:00.
- Geography
- Commune of La Vallée, Charente-Maritime, France.