International

• European GeoSciences Union (EGU) - Europe
  
• International Association of Hydrological Sciences (IAHS) - World
  

National

• Canadian Geophysical Union - Hydrology Section (CGU-HS) - Canada
  
• Association Générale des Hygiénistes et Techniciens Municipaux (AGHTM) - France
  
• Societe Hydrotechnique de France
  
• Japanese Association of Hydrological Sciences (JAHS) - Japan
  
• Japanese Geomorphological Union (JGU) - Japan
  
• Japan Water Works Association - Japan
  
• New Zealand Hydrological Society (NZHS) - New Zealand
  
• Hydrologists Forum - Norway
  
• Norwegian Geophysical Society - Hydrology Chapter (NGF) - Norway
  
• Association of Polish Geomorphologists - Poland
  
• Environmental Sciences Association of Ireland (ESAI) - Republic of Ireland
  
• Scottish Hydrological Group - Scotland
  
• Water Institute of South Africa (WISA) - South Africa
  
• British Hydrological Society (BHS) - UK
  
• Hydrogeological Group of the Geological Society - UK
  
• American Geophysical Union (AGU) Hydrology Section - USA
  
• American Institute of Hydrology (AIH) - USA
  
• Environmental & Water Resources Institute - (EWRI) - USA
  
• Hydrogeology Division of the Geological Society of America - USA