Surface hydrographic elements — Metropolis 2017 — BD Carthage

A surface hydrographic element corresponds to a surface unit containing a superficial aquatic environment: — areas covered by permanent or non-permanent fresh water, — areas covered by permanent or non-permanent salt water, glaciers, nevated. and whose characteristics (attributes) are homogeneous. A surface element is located by one face. Some attributes are managed by l'IGN: Nature, type. A hydrographic entity is broken down into surface hydrographic elements. __Origin__ Updated by l'IGN following requests from Agences de l'Water according to an annual cycle. The consolidated version is then sent to the Sandre __Partner organisations__ Ash, Agence de l'eau Adour-Garonne, Agence de l'eau Artois-Picardie, Agence de l'eau Loire-Bretagne, Agence de l'eau Rhine-Meuse, Agence de l'Rhone-Méditerrannée water and Corsica, Agence de l'eau Seine-Normandie __Links annexes__ * [see scenario d' geographical exchange of the hydrographic reference](http://www.sandre.eaufrance.fr/urn.php?urn=urn:sandre:scenario-d-echanges-geographique:eth:FRA:::ressource:1:) * [see the interactive dictionary on Sandre website](http://id.eaufrance.fr/ddd/ETH/2002-1#EltHydroSurface) * [see Dictionary & Hydrographic Reference (ETH)"](http://www.sandre.eaufrance.fr/?urn=urn:sandre:notice:dictionnaire::theme:ETH:ressource:2002-1:::html) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/bf282c52306e0cfb6d85446d1f619f3b2cafd94a)