Hydrographic area


Updated on 13/07/2018
Définition
Sens technique
The hydrographic division includes all four parts of the French territory hierarchized according to increasing drainage systems: Hydrographic Region (1st order), hydrographic Sector (2nd order), hydrographic Sub-sector (3rd order), hydrographic area (4th order). A sector is cut into a maximum of 10 sub-sectors and a sub-sector is cut into a maximum of 10 hydrographic areas.
Source
According to AFB and IOWater
Thématiques associées
Termes associés à des définitions du Sandre
Review status
Soumis au comité de relecture.