Châlons-en-Champagne Flood Risk Hazard Map for the CAC Sector

The Bureau de Recherches Géologiques et Minières provides a geospatial dataset representing flood hazard zones for the CAC sector in Châlons-en-Champagne, France. The hazard map results from hydraulic modelling conducted in 2003 by Royal Haskoning France, supplemented by data from a 2001 atlas and validated with 2008 rain events. It delineates areas based on water height levels and probability of a centennial flood.

Use Cases

• Model flood risk exposure for urban planning based on the graduated zoning of water heights.
• Analyze the effectiveness of protective structures based on the concept of hydraulic transparency mentioned in the description.
• Validate historical flood models using the four supplementary areas identified from the 2001 Atlas of the Highest Waters.
• Study hazard intensity distribution for insurance or emergency response planning based on the hazard level zoning methodology.

Strengths

• Based on professional hydraulic modelling conducted by Royal Haskoning France.
• Incorporates multiple data sources, including a 2001 atlas and validation from 2008 rain episodes.
• Explicitly includes areas behind protective structures using the hydraulic transparency principle.

Limitations

• Last updated 2019-04-04 00:00:00; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• The underlying hydraulic model is from 2003, which may not reflect current conditions.

Provenance

Source

Bureau de Recherches Géologiques et Minières

Collection Method

Hydraulic modelling and synthesis of multiple hazard data sources.

Time Range

Modelling based on 2003 data, with supplementary areas from a 2001 atlas.

Freshness

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

Geography

CAC sector in Châlons-en-Champagne, France, focusing on the Marne River and its tributaries.