Hydrogeological overview map 1:250,000 from Germany (HÜK250)

The Hydrogeological Overview Map of Germany (HÜK250) describes hydrogeological properties of the upper, large-scale aquifers in Germany on a scale of 1:250,000. In addition to lithology, stratigraphy and conductor character, five hydrogeological attributes are recorded, which are represented in the themed maps of solidification, rock type, type of cavity, permeability and geochemical rock type. The respective classifications and classifications are based, among other things, on the hydrogeological carting instructions of the State Geological Services (SGD) from 1997. The HÜK250 is a digital map work. The HÜK250 is a joint project of the SGD under the auspices of the BGR, which was launched in 2000 as the HÜK200 on the occasion of the implementation of the EU Water Framework Directive (EU-WRRL). The basis was obtained from the Geological Survey Map 1:200,000 (GÜK 200) on lithology, stratigraphy and genesis, as well as regional maps and expertise of the SGD. In the course of the project, cross-border hydrogeological information was developed nationwide and finally made available digitally with a uniform general legend. In 2019, scale migration took place from 1:200,000 to 1:250,000.德国水文地质概览图（HÜK250）以1:250000的比例尺，对德国境内上部大型含水层的水文地质特性进行刻画与描述。该数据集除涵盖岩性、地层学及导水特征外，还记录了五项水文地质属性，分别对应固化作用、岩石类型、空腔类型、渗透性以及地球化学岩石类型五大主题制图图层。上述分类体系主要依据1997年各州地质调查局（State Geological Services, SGD）发布的水文地质制图规范制定。HÜK250属于数字化制图成果，是由各州地质调查局联合开展、德国联邦地球科学与自然资源研究所（BGR）统筹的合作项目，最初于2000年以HÜK200的名义启动，彼时正值欧盟水框架指令（EU Water Framework Directive, EU-WRRL）正式落地实施。 数据集的基础数据源自1:200000比例尺地质调查图（GÜK 200）中的岩性、地层学及成因信息，同时整合了各州地质调查局的区域制图成果与专业技术报告。 项目推进期间，研究团队完成了全国范围内的跨境水文地质信息整合工作，最终采用统一通用图例实现了数字化成果的公开发布。 2019年，该数据集完成比例尺升级，从1:200000调整为1:250000。