International Hydrological Programme
Non-Governmental Organizations (NGOs)
- Association of African Hydrologists (AAH)
- British Hydrological Society (BHS)
- Euro-Mediterranean Water Information System (EMWIS)
- Global Water Partnership (GWP)
- Institut de Recherche pour le Développement (IRD)
- International Association of Hydrogeologists (IAH)
- International Association of Hydraulic Engineering and Research (IAHR)
- International Association for Water Law
- International Association of Hydrological Sciences (IAHS)
- International Commission on Irrigation and Drainage (ICID)
- International Commission on Large Dams (ICOLD)
- International Commission on Snow and Ice Hydrology (ICSIH)
- International Consortium on Landslides (ICL)
- International Co-ordinating Committee on Reservoir Sedimentation (ICCORES)
- International Council for Engineering and Technology (ICET)
- International Council for Science (ICSU)
- International Federation for Information and Documentation (IFID)
- International Geosphere-Biosphere Programme
IGBP/Biospheric Aspects of the Hydrological Cycle (BAHC)
- International Hydropower Association (IHA)
- International Institute for Applied Systems Analysis (IIASA)
- International Limnological Society
- International Office for Water
- International Union of Speleology
- International Union of Technical Associations and Unions (UATI)
- International Water and Sanitation Centre (IRC)
- International Water Association (IWA)
- International Water History Association (IWHA)
- International Water Resources Association (IWRA)
- International Water Supply Association (IWSA)
- Public Works Research Institute of Japan (PWRI)
- Scientific Committee on Water Research (SCOWAR)
- Technology for Water Resources (TECHWARE)
- Tropical Agriculture Association
- Union Africaine des Distributeurs d'Eau
- World Federation of Engineering Organisations (WFEO)
- World Water Council (WWC)
- World Wildlife Fund (WWF)