WMS Service (Web Map Service) Chemical state surface water bodies (polygons) 2015-2021

The WMS (Web Map Service) Chemical State surface water bodies with polygonal representation 2015-2021, Surface Water Masses with polygonal representation, the result of the integration of the information provided by 18 of the 25 Hydrographic Demarcations, in response to Article 13 of the Water Framework Directive. It does not include the 7 Demarcations of the Canary Islands. It corresponds to the plans that were officially approved as of 11-05-2015. Includes data for each mass: code, name, category, naturalness, type, Hydrographic Demarcation, area (measured in Lambert Acimutal Equivalent Area projection), mass status data, number of pressures of each class, number of impacts of each class, and whether there are protected zones of different classes on the surface of the mass. The URL of the WMS Service Chemical State surface water bodies (polygons) 2015-2021 is: https://wms.mapama.gob.es/sig/Agua/PHC/EstQuiMasasAguaSupP2021/wms.aspx The reference systems offered by this service are: — For geographical coordinates: CRS: 84, EPSG: 4230 (ED50), EPSG:4326 (WGS 84), EPSG:4258 (ETRS 89). — For U.T.M coordinates: EPSG:32628 (WGS 84/UTM zone 28N), EPSG:32629 (WGS 84/UTM zone 29N), EPSG:32630 (WGS 84/UTM zone 30N), EPSG:32631 (WGS 84/UTM zone 31N), EPSG:25828 (ETRS 89/UTM zone 28N), EPSG:25829 (ETRS 89/UTM zone 29N), EPSG:25830 (ETRS 89/UTM zone 30N), EPSG:25831 (ETRS 89/UTM zone 31N), EPSG:23028 (ED50/UTM zone 28N), EPSG:23029 (ED50/UTM zone 29N), EPSG:23030 (ED50/UTM zone 30N), EPSG:23031 (ED50/UTM zone 31N).本数据集为2015-2021年采用多边形表征的地表水体化学状态WMS（网络地图服务，Web Map Service）数据集，即带多边形表示的地表水团数据集，其数据整合自25个水文分区（Hydrographic Demarcations）中的18个分区所提供的信息，旨在响应《水框架指令（Water Framework Directive）》第13条的要求。本数据集未涵盖加那利群岛的7个水文分区，对应2015年5月11日正式获批的相关规划数据。数据集包含每个地表水团的以下属性信息：编码、名称、类别、自然属性、类型、所属水文分区、面积（采用兰伯特方位等面积投影（Lambert Acimutal Equivalent Area projection）单位计量）、水体团状态数据、各等级胁迫数量、各等级影响数量，以及水体团表面是否存在不同类别的保护区。该2015-2021年多边形表征地表水团化学状态的WMS服务访问地址为：https://wms.mapama.gob.es/sig/Agua/PHC/EstQuiMasasAguaSupP2021/wms.aspx。该服务提供的参考坐标系如下：— 地理坐标系：CRS:84、EPSG:4230（ED50）、EPSG:4326（WGS 84）、EPSG:4258（ETRS 89）。— UTM（通用横轴墨卡托坐标系，Universal Transverse Mercator）坐标系：EPSG:32628（WGS 84/UTM 28N带）、EPSG:32629（WGS 84/UTM 29N带）、EPSG:32630（WGS 84/UTM 30N带）、EPSG:32631（WGS 84/UTM 31N带）、EPSG:25828（ETRS 89/UTM 28N带）、EPSG:25829（ETRS 89/UTM 29N带）、EPSG:25830（ETRS 89/UTM 30N带）、EPSG:25831（ETRS 89/UTM 31N带）、EPSG:23028（ED50/UTM 28N带）、EPSG:23029（ED50/UTM 29N带）、EPSG:23030（ED50/UTM 30N带）、EPSG:23031（ED50/UTM 31N带）。