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. IAHS is pleased to announce the recipients of the International Hydrology Prize (Dooge medal and Volker medal) for 2025. This year’s prize selection was especially competitive, with 15 nominations received, out of which 75% of the nominees were deemed outstanding, making this one of the most distinguished pools of candidates we have ever seen. The 2025 recipients emerged at the top of this highly accomplished group of excellency. Their contributions to hydrology have not only advanced scientific understanding but have also had a significant global impact.

Nominations for the annual Prize are made by National Committees to IAHS, National Committees to the UNESCO-IHP or National Hydrological Advisors to the WMO, and forwarded to the Secretary General of IAHS for consideration by the Nomination Committee. The Committee consists of the President and a Vice-President of IAHS and representatives of UNESCO and WMO.

The 2025 recipients of the IAHS-UNESCO-WMO International Hydrology Prize are:

• Dooge medal - For critical advancements to improve our understanding of climate warming as well as the cryosphere, hydrological processes, and hydrological predictions in cold regions and ungauged basins around the world - Prof. John Pomeroy, at the University of Saskatchewan, Department of Geography and Planning, in Canada. 

• Volker medal - For outstanding original contributions, which have significantly benefited society by addressing critical issues of public interest and development, such as coupled human-flood and human-drought interactions - Prof. Giuliano Di Baldassarre, at the Uppsala University, Department of Earth Sciences, in Sweden.

The award ceremony is scheduled to take place in Roorkee, India during the IAHS Scientific Assembly from 5-10 October 2025. 

We extend our warmest congratulations to the winners and express our deep appreciation to all nominees and nominators. Several of the candidates would undoubtedly have been awarded the prize in any other year, and we encourage renewed nominations in the future. This year’s process clearly demonstrates the value and prestige associated with the International Hydrology Prize and reaffirms its role in recognising the world’s leading hydrological scientists.