PPRN Flood Hazard Zones for the Agout-Tarn Upstream Basin in France

A 2021 geospatial dataset from the French Geological Survey (BRGM) delineating areas exposed to flooding hazards in the upstream basin of the Agout and Tarn rivers. The data represents hazard zones used for Risk Prevention Plans (PPR), synthesized from multiple sources of calculated, modelled, or observed hazard data. It includes areas protected by structures, which are still considered subject to hazard, but excludes zones where the hazard has been studied and found to be zero or insignificant.

Use Cases

• Modeling flood risk for insurance or emergency planning based on the graduated hazard zoning.
• Informing land-use regulations and development restrictions based on identified hazard zones.
• Assessing the vulnerability of infrastructure and protective structures mentioned in the hazard analysis.
• Integrating multi-hazard risk layers for comprehensive environmental planning, as the dataset supports coding for multiple hazards.

Strengths

• Data is derived from a formal hazard study synthesizing multiple sources, suggesting methodological rigor.
• Explicitly includes areas behind protective structures, providing a conservative risk assessment.
• Last updated date of 2021-03-29 is provided, offering a temporal reference point.

Limitations

• Row count, file size, and specific column definitions are unknown, limiting suitability assessment.
• Description metadata is limited; actual data quality and schema require manual inspection after download.
• Last updated 2021-03-29; freshness should be verified for current applications.

Provenance

Source

BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES (BRGM)

Collection Method

Synthesis of multiple sources of calculated, modelled, or observed hazard data for a formal Risk Prevention Plan (PPR) study.

Freshness

Last updated 2021-03-29 00:00:00

Geography

Upstream basin of the Agout and Tarn rivers, France.