International Water Data Infrastructures
FAO AQUASTAT Provides comprehensive information on the state of agricultural water management across the world, with emphasis on developing countries and countries in transition.
University of New Hampshire EOS-WEBSTER Web-based System for Terrestrial Ecosystem Research is a digital library of earth science data.
Global Change Master Directory (GCMD) Provides descriptions of Earth science data sets and services relevant to global change research, including data on groundwater, snow/ice, surface water, and water quality.
UN GEMS-Water Provides data and information on the state and trends of global inland water quality required as a basis for the sustainable management of the world's freshwater.
UUNEP GEO Data Portal Provides access to the data sets used by the United Nations Environment Programme and its partners in its integrated environmental assessments.
Global Energy and Water Cycle Experiment (GEWEX) An integrated program of research, observations and science activities about predicting global and regional climate change.
Global Hydrology Resource Center (GHRC) Provides both historical and current Earth science data, information, and products from satellite, airborne, and surface-based instruments.
Global Precipitation Climatology Centre (GPCC) Provides global precipitation analyses for monitoring and research of the earth's climate. The GPCC contributes to the World Climate Research Programme (WCRP) and to the Global Climate Observing System (GCOS).
Global Runoff Data Centre (GRDC) Collects and disseminates river discharge data on a global, regional or catchment scale under the auspices of the World Meterological Organization.
Global Spatial Data Infrastructure (GSDI) Promotes international cooperation in support of the development of spatial data infrastructures at the local, national and international scale.
Global Terrestrial Network - Hydrology (GTN-H) Enables access to a wide range of hydrological data for global studies.
International Groundwater Resources Assessment Centre (IGRAC) Disseminates groundwater information and knowledge with the development of a Global Groundwater Information System.
National Climatic Data Center The world's largest active archive of weather data.
Terrestrial Ecosystem Monitoring Sites (TEMS) An international directory of sites and networks that carry out long-term terrestrial monitoring and research activities.
The World's Water Provides up-to-date information, data, and web connections on the world's freshwater resources.
WMO World Hydrological Cycle Observing System (WHYCOS) In the field of hydrology, aims to improve the basic observation activities, strengthen international cooperation and promote free exchange of data.