WMO Hydrological Observing System (WHOS)
Site Owner: World Meteorological Organization (WMO)
Link to Data: indirect
Geographical Scope: global
Data Export Formats: external links / variable
WHOS is the portal to the online holdings of National Hydrological Services (NHS) around the world that publish their historical (OBS) and/or real-time (RT) data without restrictions or cost. It represents the hydrological component of the WMO Integrated Global Observing System (WIGOS).