QUALITY STATION SURFACE WATERS: CHEMICAL STATE

Works of the type "Station qualité cours d'eau" from the repository of works of the Agence Artois-Picardie. The "state" values are those measured for the chemical state. The repository of the Agency's works. The work corresponds to any artificial entity (drilling, factory, lock), natural (source) or virtual (sampling site in a watercourse), geographically located and which performs at least one water-related function within the meaning of the Agency's activities. Some works have legal personality (factory, farm). Since the work can perform several functions in relation to the field of water, it is described by a generic entity containing the data common to all the works and by daughter entities corresponding to the different functions performed by the work. Example: A structure of the type 'Groundwater Access Point' may be used to: - capture water (capture) - measure the height of the aquifer (piezometer) - analyze the quality of the aquifer (quality measurement station)阿尔图瓦-皮卡第水务署（Agence Artois-Picardie）作品库中收录的「河道水质监测站（Station qualité cours d'eau）」类实体。其中「状态（state）」字段的取值为实测得到的化学状态参数。该机构的作品库中，实体（work）指所有具备地理定位属性、且至少承担一项符合该机构业务范畴的涉水职能的对象，涵盖人工实体（如钻井、工厂、船闸）、自然实体（如水源）及虚拟实体（如河道采样点）。部分实体还具备法人资格，例如工厂、农场。由于单个实体可承担多项涉水职能，因此采用「通用实体+子实体」的分层描述架构：通用实体存储所有实体共有的基础数据，子实体则分别对应该实体所承担的各项具体职能。示例：「地下水取水点（Groundwater Access Point）」类设施可承担以下多项职能： - 取水（capture） - 监测含水层水位（piezometer） - 分析含水层水质（quality measurement station）