We would like to remind you that nominations are now being accepted for the 2025 International Hydrology Prize, Tison and Falkenmark Awards.

The International Hydrology Prize is awarded annually by IAHS, with UNESCO and WMO, to two people who have made an outstanding contribution to hydrological science. Two medals are awarded under the International Hydrology Prize: the Dooge Medal and the Volker Medal. Both medals are intended to distinguish outstanding achievements by hydrological scientists but with a different focus. The Dooge medal is aimed at fundamental contributions to the science of hydrology, whereas the Volker medal is aimed at outstanding applications of hydrological science for the benefit of society at large. More information, including the list of previous awards and the nomination process, is available here.

Nominations are also being accepted for IAHS Tison and Falkenmark Awards. The Tison award is granted for an outstanding paper published by IAHS in a period of two years prior to the deadline for nominations. More information, including the eligibility criteria and list of previous awards, is available here. The IAHS Falkenmark Award is for best PhD thesis from a nominee who grew up in and recently performed the PhD work in one or more financially disadvantaged countries. More information, including the list of previous awards and the nomination process, is available here.

Nominations for all of the awards should be received by the Secretary General, Jean-Marie Kileshye Onema at [email protected] , no later than 31 December 2025.

Towards the end of October, IAHS invited nominations/applications for the newly established temporary position of Deputy Secretary General to support the President and contribute to the effective coordination of Association activities. We are pleased announce that, following the review of submissions from the pool of eligible applicants, the role of Deputy Secretary General has been awarded to Dr Ankit Agarwal.

Dr Ankit Agarwal is an Associate Professor in the Department of Hydrology at the Indian Institute of Technology Roorkee (IITR). He holds a PhD in Hydrology from the University of Potsdam, Germany, and also serves as a Visiting Scientist at the Helmholtz Centre for Environmental Research, Germany. His research focuses on understanding and predicting hydro-meteorological extremes, emphasizing methodological innovation, physical understanding and societal relevance. Ankit’s numerous honours include the Outstanding Early Career Scientist Award (European Geosciences Union), INAE Young Associate 2025, INAE Young Engineer Award 2025, IEI Young Engineers Award (2023–24), Institute Research Fellowship (IRF) at IIT Roorkee, Fellow of the Royal Meteorological Society (UK) and membership in the Indian National Young Academy of Science (INYAS). He also leads several major research projects under Indo-German, Indo-French, Indo-Portuguese BRICS, SPARC and Monsoon Mission-III collaborations, reflecting his strong commitment to international scientific cooperation and institutional development.

The Deputy Secretary General will assist the President in following the ongoing initiatives and activities across IAHS, ensuring effective communication and coordination within the Association. The Deputy will also be expected to act on behalf of the Secretary General when the latter is temporarily unable to attend events or carry out specific duties due to unforeseen circumstances. This role is designed to complement the functions of the Secretary General, fostering continuity and efficiency in the operation of IAHS governance. 

Please join us in congratulating Ankit on this appointment, which will commence 11 December 2025!

We are pleased to announce the publication of the long-awaited Panta Rhei synthesis volume: Coevolution and Prediction of Coupled Human–Water Systems: A Sociohydrologic Synthesis of Change in Hydrology and Society, has now been formally published by Elsevier and is available online in open access. This book represents the culmination of the Panta Rhei scientific decade (2013–2022), a global effort to understand and predict dynamic interactions between people and water.

Led by editors Fuqiang Tian (Tsinghua University), Jing Wei (Tsinghua University), Melissa Haeffner (Portland State University), and Heidi Kreibich (GFZ Potsdam), the book brings together contributions from 160 authors across natural and social sciences, supported by a distinguished 27-member Editorial Advisory Board. The book provides:

• A holistic sociohydrological framework
• Integrative theories, methods, and data bridging hydrology and social sciences
• Deep dives into major human–water systems: floods, droughts, agriculture, transboundary rivers, and global teleconnections
• Worldwide case studies illustrating emergent phenomena
• A grand synthesis and future vision for science and practice.

For whom:

• Researchers in hydrology and social sciences
• Graduate students entering interdisciplinary water research
• Practitioners and policymakers in water governance
• Members of IAHS working groups.

IAHS expresses warm appreciation to all contributors whose efforts made this synthesis volume possible!

The December issue of the HSJ Digest is hot of the press! In our bi-monthly synopsis of the latest news from Hydrological Sciences Journal, we report on our recent Editorial Retreat at the IAHS2025 Scientific Assembly in Roorkee, India, seamlessly organized by our very own Associate Editor Ankit Agarwal, also profiled in this issue. Find links, too, to all the latest articles published in HSJ, and synopses of free-to-view Featured and Open Access articles from recent issues.

Within the IAHS HELPING Scientific Decade initiative, we hold annual online conferences to discuss progress and search for cross-fertilization within our 31 HELPING Working Groups, who will be gathered to highlight their progress and discuss their collaboration. 

We invite all IAHS members to attend the next annual meeting which will be held online on Monday 19 Jan 2026 from 14:00 – 17:00 (CET). Registration is necessary to secure your place at this year's event, so please complete this registration form to secure your place for this event. If you cannot access the Google Form, please contact [email protected] and assistance will be offered to you.

The IAHS membership community is more than 12,000 strong with members in over 150 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. IAHS membership of IAHS is free to all. Join us today!

We would like to remind you that nominations are now being accepted for the 2025 International Hydrology Prize, Tison and Falkenmark Awards. 

The International Hydrology Prize is awarded annually by IAHS, with UNESCO and WMO, to two people who have made an outstanding contribution to hydrological science. Two medals are awarded under the International Hydrology Prize: the Dooge Medal and the Volker Medal. Both medals are intended to distinguish outstanding achievements by hydrological scientists but with a different focus. The Dooge medal is aimed at fundamental contributions to the science of hydrology, whereas the Volker medal is aimed at outstanding applications of hydrological science for the benefit of society at large. More information, including the list of previous awards and the nomination process, is available here.

Nominations are also being accepted for IAHS Tison and Falkenmark Awards. The Tison award is granted for an outstanding paper published by IAHS in a period of two years prior to the deadline for nominations. More information, including the eligibility criteria and list of previous awards, is available here. The IAHS Falkenmark Award is for best PhD thesis from a nominee who grew up in and recently performed the PhD work in one or more financially disadvantaged countries. More information, including the list of previous awards and the nomination process, is available here.

Nominations for all of the awards should be received by the Secretary General, Jean-Marie Kileshye Onema at [email protected], no later than 31 December 2025.

The International Association of Hydrological Sciences (IAHS) invites nominations/applications for the newly established temporary position of Deputy Secretary General to support the President and contribute to the effective coordination of Association activities.

Role & Term

·  Position: Deputy Secretary General.

·  Purpose: The Deputy Secretary General will assist the President in following the ongoing initiatives and activities across IAHS, ensuring effective communication and coordination within the Association. The Deputy will shadow the role of the Secretary General. The Deputy will also be expected to act on behalf of the Secretary General when the latter is temporarily unable to attend events or carry out specific duties due to unforeseen circumstances. This role is designed to complement, not duplicate, the functions of the Secretary General, fostering continuity and efficiency in the operation of IAHS governance.

·  Term: 2 years

·  Compensation: Voluntary (unpaid)

·  Expenses for attending events to represent IAHS possible where the Secretary General is unavailable (subject to approval)

Eligibility

Candidates should demonstrate previous experience with IAHS or with comparable scientific/professional organizations (e.g. as an IAHS Bureau member, Commission Officer, leader of an IAHS initiative or HSJ Editorial Board member). A strong commitment to IAHS’s mission and the ability to collaborate effectively across the Association are essential. Excellent communication, time organisation, team working, and diplomacy skills are important qualities for the role.

Appointment

Following the close of the call and review of submissions, the President will make the appointment from the pool of eligible applicants.

How to Apply

Please submit:

·  A curriculum vitae highlighting experience within IAHS (or similar organizations).

Send applications by email to the IAHS Secretariat: [email protected] with subject line: Deputy Secretary General – Application: [Your Name]

Deadline

The call will remain open for 15 calendar days from the date of publication, closing at noon GMT on 13 November 2025.

Queries

For questions, please contact the IAHS Secretariat at [email protected] .

We’d like to hear from you about how you currently use the Digital Water Globe (DWG), what could be improved, and what features you’d like to see in Digital Water Globe (DWG) 2.0. Your feedback will help us shape the future design and functionality of this collaborative hydrological platform.

Share your Digital Water Globe (DWG) ideas here! We invite you to share this with your respective colleagues and networks for additional inputs.

Contribution of isotope hydrology to water sciences in Africa: Revisiting foundations and exploring new research trends.

There’s still time to submit to this special issue which aims to consider isotope applications over the continent of Africa, examining new research trends and the challenges facing isotope hydrology applications. It will showcase innovative solutions and success stories and aims to promote an exchange of ideas and knowledge, as well as inspiring a new generation in using isotope hydrology to investigate environmental issues. We aim to promote a greater interest among water managers and the isotope hydrology community in Africa in the efficiency of using environmental isotope tracers for water resource studies.

Submit an article here.
Abstract deadline: 31 October 2025
Manuscript deadline: 31 December 2025.

Special Issue Editor(s):
Aldo Fiori (Co-editor), Roma Tre University, Italy
Frédéric Huneau (Lead Guest Editor), University of Corsica, France
Bertil Nlend (Further Guest Editor), University of Douala, Cameroon.