Reference profiles for flood hazard zoning in the Aval sector of Châlons-en-Champagne, France. The dataset was created by the Bureau de Recherches Géologiques et Minières and last updated in April 2019. It contains polylines representing water level profiles with ratings in NGF meters, used to determine regulatory construction elevations.
Use Cases
- Determine regulatory construction elevations based on reference water level profiles.
- Visualize centennial flood water heights across a geographic sector.
- Interpret flood prevention plan (PPRi) regulations using mapped reference ratings.
Strengths
- Profiles have an altimeter deviation of about 20 cm, suggesting precise elevation data.
- Ratings are linked to the General Level of France (NGF), providing a standardized vertical reference.
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
- Derived from hydraulic modelling of centennial flood hazards.
- Freshness
- Last updated 2019-04-04 00:00:00
- Geography
- Aval Sector of Châlons-en-Champagne, France