Flood Hazard Zones for Châlons-en-Champagne, Based on 2003 Hydraulic Modelling

A 2003 hydraulic modelling study by Royal Haskoning France defines flood hazard zones for the upstream area of Châlons-en-Champagne. The dataset, managed by the Bureau de Recherches Géologiques et Minières, represents areas exposed to centennial flood hazards, incorporating results from the 2001 Atlas of the Highest Waters and validated with 2008 rain events. It includes zones protected by structures considered hydraulically transparent and excludes areas where the hazard was studied and found to be nil.

Use Cases

• Risk analysis for flood prevention plans based on graduated hazard zoning.
• Land-use planning and zoning regulation based on mapped hazard intensity levels.
• Validation and refinement of hydraulic models based on the inclusion of four additional non-modelled tributary areas.
• Infrastructure resilience assessment based on the representation of areas behind protective structures considered hydraulically transparent.

Strengths

• Based on a dedicated hydraulic modelling study conducted in 2003.
• Incorporates validation from real-world rainy episodes in February 2008.
• Uses a graduated zoning method based on water height levels and probability of occurrence.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Last updated 2019-04-04 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

Collection Method

Hydraulic modelling by Royal Haskoning France, supplemented with data from the Atlas of the Highest Waters (PHEC).

Time Range

Modelling from 2003, with validation from 2008 events.

Freshness

Last updated 2019-04-04 00:00:00

Geography

Upstream area of Châlons-en-Champagne, France, focusing on the Marne River and its tributaries.