The IAHS community is more than 13,000 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
October 2026 A new textbook of interest to IAHS members, 'Streamflow Generation: Processes and Perceptual Models', is available open access from Oxford University Press. Read the book free on Oxford Academic. The book is for senior undergraduates and beginning graduate students. It offers an equ....
September 2026 In this issue we are delighted to introduce you to the recently appointed IAHS Chair, Melody Sandells. We also present complete listings for recent issues of the Journal, together with synopses of key papers, including multiple Open Access and free-to-view ‘featured&rsquo....
September 2026 Building on the success of the first IAHS Academy (Ningbo, January 2026), the second edition aims to further strengthen IAHS capacity-building activities by expanding the scientific offer, enlarging participation, and consolidating the Academy as a flagship global training initiative....
September 2026 We are pleased to announce that the STAHY Workshop will return in 2027! Organized by the International Commission on Statistical Hydrology (ICSH) of the International Association of Hydrological Sciences (IAHS), STAHY brings together researchers and practitioners interested in the....
August 2026 Nominations are now being accepted for the 2027 International Hydrology Prize, IAHS Fellow Award, Tison Award and Falkenmark Award. The International Hydrology Prize is awarded annually by IAHS, with UNESCO and WMO, to two people who have made an outstanding contribution to hyd....
August 2026 Under the dual stressors of accelerating climate change and intensifying anthropogenic activities, the global water system is experiencing increasingly severe challenges, including the uneven spatiotemporal distribution of water resources, the rising frequency and intensity of extreme h....
August 2026 In this issue we are delighted to report the Journal’s increased Impact Factor and sustained Q1 SCImago ranking. We also present complete listings for recent issues of the Journal, together with synopses of key papers, including multiple Open Access and free-to-view ‘feature....
July 2026 During the 5th International Conference on African Rivers held in Rabat, Morocco, one of the outcomes was the Rabat Declaration on the Future of African Rivers, which highlights ten recommendations. Africa is warming at more than +0.3 °C per decade — faster than the global av....
July 2026 The 29th IUGG General Assembly will be held 16 to 22 July 2027 in Songdo ConvensiA, Incheon, Republic of Korea. This is a special opportunity for participants from around the world to come together and share their science and culture. Join us for a host of scientific activities, including....
June 2026 This edition features a curated selection of HSJ articles, along with complete listings of recent issues. We proudly celebrate the recipient of our annual Associate Editor Award, Svenja Fischer, alongside our multiple Reviewer Award winners. Additionally, we provide information on ....
Hydrological Sciences Journal (HSJ) is the official Journal of the International Association of Hydrological Sciences (IAHS) and provides a forum for original papers and for the exchange of information and views on significant developments in hydrology worldwide. It is published by Taylor & Francis and available online and in print format. Hydrological Sciences Journal is an international, peer reviewed journal, publishing high-quality, original research. As the official Journal of IAHS, HSJ is freely available online to IAHS members from FDC's (Financially Disadvantaged Countries).
International Association of Hydrological Sciences (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!
The 29th IUGG General Assembly will be held 16 to 22 July 2027 in Songdo ConvensiA, Incheon, Republic of Korea. This is a special opportunity for participants from around the world to come together and share their science and culture. Join us for a host of scientific activities, including special public lectures, keynote Union lectures and a wide variety of themed sessions. The IAHS-led programme will be over the first half of the Assembly ie 16-20 July 2027.
Building on the success of the first IAHS Academy (Ningbo, January 2026), the second edition aims to further strengthen IAHS capacity-building activities by expanding the scientific offer, enlarging participation, and consolidating the Academy as a flagship global training initiative for early-career hydrologists. The 2027 IAHS Academy is jointly organized by the International Association of Hydrological Sciences (IAHS), UNESCO Intergovernmental Hydrological Programme (IHP), UNESCO World Water Assessment Programme (WWAP), World Meteorological Organization (WMO), the Eastern Institute of Technology, Ningbo (EIT) and Tsinghua University, Beijing. The dates of the 2027 IAHS Academy are set for 11–17 January 2027 and will be hosted at the 宁波东方理工大学 Eastern Institute of Technology, Ningbo (EIT).
The XIIth International Association of Hydrological Sciences (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.
The International Association of Hydrological Sciences (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.
The International Association of Hydrological Sciences (IAHS) community is more than 13,000 strong with members in over 170 countries contributing to the extensive programme of conferences and workshops, online discussions and IAHS publications. IAHS is one of the eight constituent associations of IUGG. Membership of IAHS is free to all.
Join IAHS today!