H3Dv2.1 A1011, prevent Sand from Knokke

This layer gives the prevention limits of A1011, 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.