H3Dv2.1 A0253, preventing Sand from Bolderberg outside the Roerdalslenk

This layer gives the prevention limits of A0253, 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.