Lakes (WFD) Lower Saxony

The smallest delimited hydrological level of the EC Water Framework Directive (WFD) is the water body (WK). Lakes with a water surface area greater than 50 ha are considered as separate lake-water bodies for the WFD.The water body characterisation and assessment is integrated with results of the assessment of the overall ecological status/potential and the overall chemical status for the preparation of topic maps as an attribute.欧盟水框架指令（Water Framework Directive, WFD）划定的最小水文单元为水体（WK）。水面面积大于50公顷的湖泊，需作为独立湖体水体纳入水框架指令的评估范畴。水体特征描述与评估工作，将整合整体生态状况/潜力以及整体化学状况的评估结果，并将该整合结果作为一项属性，用于专题地图的编制。