Internasjonale organisasjoner med nasjonale representanter
International Association of Hydrogeologists
International Association of Hydrological Sciences
International Association of Theoretical and Applied Limnology
International Water Association/NORDIWA
Nordic Association for Hydrology
UNESCO – International Hydrological Programme (IHP)
World Meteorological Organization
Andre internasjonale institusjoner
International Water History Association (IWHA)
Stockholm International Water Institute (SIWI)
Forvaltnings- og forskningsinstitusjoner
Centre for Ecology and Hydrology (CEH), (Wallingford)
Finnish Environment Institute (FEI)
Grønlands og Danmarks Geologiske Undersøgelse (GEUS)
National Environmental Research Institute (NERI) (DK)
Swedish Meteorological and Hydrological Institute (SMHI)
Organisasjoner, foreninger o.l.
International Association of Hydrogeologists (IAH)
International Association of Hydrological Sciences (IAHS)