AZI coastal rivers — hydrogeomorphological units — in Loire-Atlantique

These data represent the different hydrogeomorphological units of the alluvial plain of the rivers of the rivers: — 01: minor bed (circulation zone d' flow), — 02: medium bed (frequent and very frequent), — 03: major bed (rare crues), — 04: exceptional major bed (exceptional cruces), — 05: plan d'water, — 06: Traict. The study perimeter of l'atlas of flood zones (AZI) of the coastal rivers in Loire-Atlantique covers the watersheds of the Etier du Pont d’Arm, du Boivre, the Canal de Haute Perche and Falleron (including its upstream part located in the Vendée department). __Origin__ These data represent the anthropogenic elements of land use that may play a role in the hydraulic operation of the modern alluvial plain. __Partner organisations__ DDTM Loire-Atlantique __Links annexes__ * [Atlas-des-zones-inundables-des-cours-d-eau-cotiers](http://www.loire-atlantique.equipement-agriculture.gouv.fr/Politiques-publiques/Risques-naturels-et-technologiques/Prevention-des-risques-naturels/Atlas-des-zones-inondables/Atlas-des-zones-inondables-des-cours-d-eau-cotiers) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/a15d7e7dce0a29e2912a2805f2fa921fb6a08403)