* American Institute of Hydrology (AIH)
*Geological Society of America (GSA) – Hydrogeology Division
* American Geophysical Union (AGU) – Hydrology Section
* National Ground Water Association (NGWA)
* American Water Resources Association
* Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI)
* International Association of Hydrological Sciences (IAHS)
* Statistics in Hydrology Working Group (subgroup of IAHS)
* German Hydrological Society (DHG: Deutsche Hydrologische Gesellschaft)
* Italian Hydrological Society (SII-IHS) – [http://www.sii-ihs.it Società Idrologica Italiana]
* Nordic Association for Hydrology
* British Hydrological Society
* Russian Geographical Society (Moscow Center) – Hydrology Commission
* International Association for Environmental Hydrology
* International Association of Hydrogeologists
* [http://soham.org.np/ Society of Hydrologists and Meteorologists – Nepal]