| hydroweb.com | International Association for Environmental Hydrology |
| awra.org | American Water Resources Association |
| siwi.org | Stockholm International Water Institute |
| iahr.org | International Association of Hydraulic Engineering and Research [IAHR] |
| wlu.ca | The International Association of Hydrological Sciences (IAHS) |
| wqa.org | Water Quality Association |
| wef.org | Water Environment Federation [WEF] |
| ngwa.org | National Ground Water Association Courses, Conferences, and Expositions |
| siu.edu | International Water Resources Association (iwra) |
| irc.nl | Home - IRC International Water and Sanitation Centre |
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