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Éléments hydrographiques, y compris les zones maritimes ainsi que toutes les autres masses d'eau et les éléments qui y sont liés, y compris les bassins et sous-bassins hydrographiques. Conformes, le cas échéant, aux définitions établies par la directive 2000/60/CE du Parlement européen et du Conseil du 23 octobre 2000 établissant un cadre pour une politique communautaire dans le domaine de l'eau [2] et sous forme de réseaux.
Note d'application (en):The theme Hydrography is a basic reference component and, therefore, of interest for many users and uses.
For mapping purposes (to provide a map background for orientation and to understand place relationships), it includes the representation of all main hydrographic elements – both natural and artificial. To fulfill reporting requirements of EC water-related directives it includes the river and channel network; surface water bodies within river basin districts are categorised as rivers, lakes, transitional waters or coastal waters, or as artificial surface water bodies or heavily modified surface water bodies. Furthermore, a topologically-sound river network is necessary for GIS-based spatial analysis and modeling.
Geographically, the theme Hydrography covers all inland water and marine areas covered by river basin districts as defined by WFD.