WMS Service (Web Map Service) Hydrographic network formed by joining water bodies PHC 2015-2021

The WMS (Web Map Service) Hydrographic Network formed by joining water bodies PHC 2015-2021 allows the visualisation and consultation of vector data and alphanumeric information associated with the mapping of lines representing the axes of the water bodies of the Watershed Hydrological Plans of the second planning cycle (2015-2021) of the Water Framework Directive. Water bodies exist in two geometries: linear (river-type masses) and polygonal (river-type masses with polygon representation, lake-type masses, coastal water bodies, and transitional water bodies). The Hydrographic Network contains the axes of both types of masses when they are river or lake type; it does not apply to coastal and transitional water polygons, which are not considered to be a hydrographic network. For example, a reservoir will be represented in the network as one or more imaginary lines that run through its interior approximately, and those lines connect the entrances with the water outlets of the reservoir. For a mass with linear geometry (rivers) the axis runs along the same line of the body of water. The URL of the WMS Hydrographic Network Service formed by joining water bodies PHC 2015-2021 is: https://wms.mapama.gob.es/sig/Agua/PHC/RedHidro2021/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).整合2015-2021年PHC水体数据集的Web地图服务（Web Map Service, WMS）水文网络，可实现与《水框架指令》第二个规划周期（2015-2021年）流域水文计划中水体轴线映射相关的矢量数据与字母数字信息的可视化与查询。 水体存在两种几何形态：线状（河流类水体）与面状（带面状表达的河流类水体、湖泊类水体、近岸水体以及过渡性水体）。本水文网络包含河流类与湖泊类水体的轴线数据；而近岸及过渡性面状水体不属于水文网络范畴，因此未纳入本数据集。例如，水库将以一条或多条近似贯穿其内部的假想线在网络中表达，这些连线连接水库的入水口与出水口；对于线状几何形态的水体（河流），其轴线与水体本身的中心线重合。 本整合2015-2021年PHC水体数据集的WMS水文网络服务的访问地址为：https://wms.mapama.gob.es/sig/Agua/PHC/RedHidro2021/wms.aspx 该服务提供的参考坐标系如下： — 地理坐标参考系：CRS:84、EPSG:4230（ED50）、EPSG:4326（WGS 84）、EPSG:4258（ETRS 89）。 — UTM坐标参考系：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）。