H3Dv2.1 A0441, isohypses of top Klei of henis

This layer gives the isohypes of the A0441 top, as defined in the 3D hydrogeological model of the Flemish substrate – version 2.1. 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A0441地层顶部的等水头线（isohypes），其定义源自弗兰德基底三维水文地质模型——版本2.1。该三维水文地质模型系代表弗兰德环境署，依照弗兰德政府与VITO签订的名为VLAKO的管理协议框架编制而成。