INTERNATIONAL ASSOCIATION OF HYDROLOGICAL SCIENCES

SUPPORTING HYDROLOGY AND RELATED SCIENCES WORLDWIDE

The IAHS community is more than 12,000 strong with members in over 170 countries contributing to the extensive programme of conferences and workshops, online discussions and IAHS publications. Membership of IAHS is free to all. Join us today!

IAHS is one of the eight constituent associations of IUGG

Roys Peak, New Zealand (timbri97)

IAHS Scientific Decades: HELPING

IAHS has proudly and successfully coordinated two Scientific Decades, which, amongst other things, set the research agenda worldwide through collaborative forces. The third Scientific Decade 2023–2032 of IAHS launches a topic for collaborative efforts in hydrological sciences: HELPING, created through a participatory community process and by applying strategic planning. The third IAHS Scientific Decade is dedicated to local solutions under the global water crisis. The name HELPING, stands for Hydrology Engaging Local People IN one Global world. The HELPING Theme and Working Groups are now available for you to view and join. If you're curious about the IAHS Scientific Decades and want to learn more, don't hesitate to get in touch with us. Our team is passionate about what we do, and we'd love to share the details with you. Just drop us an email at [email protected], and let's embark on this scientific journey together. Your quest for knowledge starts here! 

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IAHS News

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IAHS 2025, Roorkee, India

The XIIth IAHS Scientific Assembly took place 5-10 October 2025 in Roorkee, India. The Scientific Assembly was jointly organised by the Indian Institute of Technology Roorkee, in coordination with the National Institute of Hydrology Roorkee, Irrigation Research Institute Roorkee and CBRI–Central Building Research Institute (CBRI) Roorkee, four leading institutions in the field of water resources in India. The Assembly successfully experimented with an innovative new format which aimed to underline the importance of the discipline of Hydrology and to increase the visibility of the next generation of hydrologists. Read the Program Book here and the Abstract Book here.

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IAHS Academy

The International Association of Hydrological Sciences (IAHS) is proud to announce that the venue and dates for the first edition of the IAHS Academy, the newly established advanced training and educational programs to advance and promote hydrological sciences globally, are set for 12-18 January 2026 and will be hosted in Ningbo, China. IAHS proudly established the IAHS Academy in July 2023 in occasion of the 28th IUGG General Assembly held in Berlin, Germany.

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The IAHS Digital Water Globe(DWG) is evolving!

The IAHS Digital Water Globe (DWG) is currently undergoing a major redevelopment and will be temporarily unavailable from the end of March 2026. This transformation marks the beginning of DWG 2.0 — a new and enhanced platform designed to strengthen how hydrological science is shared, explored, and connected across the world. The next generation of the DWG will build on the original vision while introducing new possibilities for visualising research, connecting scientific knowledge, and supporting the global hydrological community. During this period, the IAHS team is working behind the scenes to develop an improved platform that will better serve the IAHS membership. We look forward to sharing further updates as development progresses. Stay tuned as a new Digital Water Globe experience is coming soon.

 

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