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The early bird registration for the 41st IAHR World Congress (22-27 June 2025) will close on 15 March at 11:59 PM GMT+8. 

This is the last opportunity to secure a discounted registration rate, with special fees available for IAHR members, participants from low-income countries, and students. The congress will bring together over 1,500 global experts to discuss cutting-edge innovations in water engineering and sustainable development. 

Social Events

Are you interested in connecting with experts, researchers, and professionals worldwide at the 41st IAHR World Congress? We have organised exciting social events designed to help you build meaningful relationships, exchange ideas, and expand your network in a dynamic and engaging environment. 
 
Welcome Reception 
Monday, 23 June 2025 
5:30PM – 7:30PM 
Hall 2A 
IAHR2025 Singapore & SIWW Spotlight 2025 delegates can attend the Welcome Reception to reconnect with fellow experts in the field. Enjoy an evening of networking, beverages and light snacks, as we kick off the Congress. 
*Access to Welcome Reception is included in the delegate pass. 
 
IAHR Awards & Congress Dinner (ticketed separately) 
Thursday, 26 June 2025 
6:30PM – 9:30PM 
Flower Field Hall @ Flower Dome, Gardens by the Bay 
S$150 per ticket. 
Registered delegates are invited to an evening of networking, dining and camaraderie at one of Asia's premier horticultural destinations – Gardens by the Bay. Unwind, connect with fellow delegates and celebrate the achievements of the hydro-environment community at the IAHR Awards & Congress Dinner. 
*Dinner ticket entitles you to complimentary access to the Flower Dome. 

More about the social events. 

Presenting authors of extended abstracts must complete their registration by 15 March to secure their presentation slots. Submit your full paper here. 

Register now to be part of this international congress here.