Situation2002 The AESN (Seine Normandy Water Agency), in partnership with the IAU îdF, had the surface hydrography of the Ile de France region digitized from IGN maps at 1/25,000. River basins are groupings of (elementary) watersheds. These are the basins of the 58 main rivers in the Region. The watershed dataset covers the entire territory of Île-de-France. It was carried out using hydrographic information prepared by the Seine Normandy Water Agency and the digital terrain model at 50 meter intervals.Version: 1Consult the metadata
