American Geophysical Union Hydrology Section
Members are concerned with the cycling of continental water (solid, liquid and vapor) at all scales, and with physical, chemical and biological processes driven by that cycling. Current news and information and links to other Internet resources.
American Water Resources Association
Promotes understanding of water resources and related issues by providing a multidisciplinary forum for education, professional development and information exchange.
Belgian Branch of the International Water Association
A non-profit professional organization that welcomes everybody interested in the scientific and technical aspects of water and water management.
International Association of Hydraulic Engineering and Research [IAHR]
International non-governmental organization of engineers and scientists working in hydraulics and hydraulic engineering. Information about organization journals, conferences, and other topics.
Midwest Water Analysts Association
A professional organization located in WI, IL, and IN composed of water, waste water, environmental, and public health lab analysts and the organizations and businesses that support them.
Rocky Mountain Water Environment Association
An organization of professionals working together to preserve and enhance the watershed environments originating in the states of Colorado, Wyoming, and New Mexico.
Texas Section American Water Works Association
Water professionals dedicated to the promotion of a safe and sufficient supply of drinking water. Includes organization information and links.
The International Association of Hydrological Sciences (IAHS)
This is the oldest and foremost international nongovernmental organization which deals with hydrology and water resources.