The WMO Hydrological Observing System (WHOS) facilitates hydrological data sharing. It is a multi-scale (local, national, regional and global) registry of hydrological data and information services catalogued using the standards and procedures developed by the Open Geospatial Consortium (OGC) and the WMO.
WHOS is being developed and implemented in two phases:
Phase 1 provides a map interface with links to those NMHSs that make their real-time and historical hydrological data available online.
Phase 2 provides a services-oriented framework linking hydrological data providers and users through a hydrological information system of systems enabling data registration, data discovery and data access.
Find out more on the WHOS Community site.