H3Dv2 A1220, base Trias isohypses (excluding Sleen) and Perm

This layer gives the isohypes of the base of A1220, as defined in the 3D hydrogeological model of the Flemish substrate. The hydrogeological 3D model was drawn up in the framework of the Flemish Government’s management agreement with VITO, known as VLAKO, on behalf of the Flemish Environmental Agency本图层展示了弗拉芒基底三维水文地质模型中定义的A1220层底板的等埋深等值线（isohypes）。该三维水文地质模型系受弗拉芒环境署委托，依据弗拉芒政府与VITO签订的名为VLAKO的管理协议编制而成。