The World Hydrological Cycle Observing System (WHYCOS) aims to strengthen national capacities in basic observation, foster basin-wide, regional and international cooperation and promote the free exchange of hydrological data.
Its ultimate goal is to support decision-making in water management through the provision of reliable data and information. It envisions bolstering sustainable socio-economic development, environmental protection, mitigation and adaptation to climate change effects, and conflict prevention, especially in transboundary catchments.
The programme underwent a full review in 2011 that highlighted the need to enhance the sustainability and effectivity of the projects achievements (both financial and operational). As a response, the WHYCOS programme is now at the core of the newly established Global Hydrometry Support Facility (WMO HydroHub).