Water Framework Directive (WFD) Groundwater bodies Cycle 1

Water Framework Directive (WFD) Groundwater bodies Cycle 1 is a spatial (polygon) dataset containing attributes that have been collated as defined for the implementation of the Water Framework Directive (WFD). Article 2, clause 2 of the WFD defines them as '...all water which is below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil'. For the purposes of reporting under the WFD a groundwater body represent a distinct body of groundwater flow with a coherent flow unit including recharge and discharge areas with little flow across the boundaries. These reflect hydrogeological characteristics containing information on flow and stage properties, recharge and vulnerability to pollution. This has been undertaken through definin
g aquifers into different types and broken into catchment units at Catchment Abstraction Management Strategy (CAMS) scale. Since water bodies are attributed with a unique identifier (EA_WB_ID) this dataset can be linked directly to other WFD data sources such as physical characteristics, risk, classification and proposed objectives.

《水框架指令》（WFD）地下水体循环1是一个空间（多边形）数据集，其中包含按照《水框架指令》实施要求所汇集的属性。根据《水框架指令》第二条第二款的规定，这些属性定义为‘…所有位于地下饱和带以下，与地面或底土直接接触的水体’。在《水框架指令》的汇报目的下，地下水体代表着具有一致水流单元的独立地下水流动体系，包括补给区和排泄区，边界间的水流微弱。这些属性反映了水文地质特征，包括水流和水位属性、补给以及污染易感性信息。这一工作通过将含水层划分为不同类型，并在流域抽水管理战略（CAMS）尺度上划分为流域单元来实现。由于水体被赋予了一个唯一的标识符（EA_WB_ID），因此该数据集可以直接与其他《水框架指令》数据源如物理特性、风险、分类和拟定的目标等相链接。