H3Dv2.1 A1103, isohypses of top Cretaceous deposits of Gulpen and Nevele, sands and marls of Vaals and Dorne and the Turoonmergels

This layer gives the isohypses of the top of A1103, as defined in the Hydrogeological 3D model of the Flemish subsurface - version 2.1. The Hydrogeological 3D model was drawn up in the framework of the management agreement of the Flemish government with VITO, under the name VLAKO, on behalf of the Flemish Environment Agency.