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GIS Structures

Three candidates are available for EDA :

• The French layer which is the most detailed : BDCarthage
• The european database from the JRC : CCM
• A database based on the previous one but less detailed : ECRINs

Projection : ETRS89-LAEA (srid=3035)

Another candidate : Réseau Hydrographique Théorique RHT

When comparing surface layers for ECRINs and CCM for the bassin Loire-Bretagne : the CCM layer is more extended than the Ecrin Layer

Comparison table between CCM - Ecrins - BDCarthage