PPRI Hazard Zones in the Porto Watershed, Based on 1997 Flood Study

A hazard map from a 1997 flood risk study by the Bureau de Recherches Géologiques et Minières (BRGM) delineates areas exposed to one or more hazards in the Porto watershed. The map, used for risk analysis, was approved on 09/02/2004 and includes areas protected by structures, which are considered subject to hazard. The dataset represents a synthesis of multiple sources of calculated, modelled, or observed hazard data.

Use Cases

• Risk assessment modeling based on hazard probability and intensity levels described in the dataset.
• Urban planning and land-use zoning based on graduated hazard zones.
• Evaluating the impact of protective structures on hazard exposure, as they are included in the zoning.
• Historical analysis of flood risk management policies stemming from the 1997 study.

Strengths

• Based on a specific 1997 flood risk study conducted by BRGM.
• Includes areas protected by structures, accounting for potential failure.
• Represents a synthesis of multiple hazard data sources.

Limitations

• Last updated 2021-08-19 00:00:00; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.

Provenance

Source

BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES (BRGM)

Collection Method

Result of a 1997 flood risk study, with hazard evaluation methods specific to each hazard type.

Time Range

Study conducted in 1997; PPRI approved 09/02/2004.

Freshness

Last updated 2021-08-19 00:00:00.

Geography

Catchment area of Porto, Portugal.