WMS Service (Web Map Service) Reference Network (Control Natural Conditions Changes)

The WMS (Web Map Service) service called Control Natural Conditions Changes (Referral Network) allows to establish specific reference conditions for each type of body of water. The latter is an essential requirement for the determination of ecological status, since, by comparison with these conditions, the results obtained in the monitoring programmes can be assessed. It also allows the assessment of long-term trends in the state of water bodies due to changes in natural conditions. The parameters that are checked in these sampling stations correspond to representative indicators of all biological quality elements (phytoplankton, other aquatic flora, macroinvertebrates, fish), hydromorphological and physicochemical. The URL of the WMS Control Service Changes Natural Conditions (Referral Network) is: https://wms.mapama.gob.es/sig/Agua/RedSegSuperficial/CondNaturales/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).