2020 Basin Administrative Divisions

France has 12 basin constituencies or basin committees (7 in mainland France and 5 in overseas France). The administrative territory of each basin is based on the municipal division, by ministerial decree. The benchmark for the administrative districts of the basin is derived from the aggregation (carried out by the Sandre) of the geometries of the municipalities belonging to the same district. The geometries of the municipalities are taken from the database ADMIN EXPRESS COG 2020 edition of the IGN. Original data uploaded to: https://geoservices.ign.fr 22 January 2021