Mission: To promote the study of Hydrology as an aspect of the earth sciences and of water resources; to provide for discussion, comparison, and publication of research results; to initiate, facilitate, and coordinate research into, and investigation of, those hydrological problems which require international cooperation.
Description: The International Association of Hydrological Sciences (IAHS) is the foremost international learned society dealing with the pressing problems of water resources, floods, droughts, water pollution, erosion, etc., together with the science and technology to address them.
IAHS's Homepage: here