H3Dv2 A0221, isohypses of Malle’s top clay sand

This layer gives the isohypes of the A0221 top, 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地质基底三维水文地质模型中定义的A0221顶面等水头线（isohypes）。该三维水文地质模型由弗拉芒环境署代表弗拉芒政府，依托其与弗拉芒技术研究院（VITO）签订的名为VLAKO的管理协议框架编制完成。