The 8th Europe Congress of IAHR (International Association for Hydro-Environment Engineering and Research) was held in Lisbon, Portugal, from 4 to 7 June 2024.

The Congress was organised by the IAHR Europe Division and the National Laboratory for Civil Engineering (LNEC), which hosted the conference, together with the Instituto Superior Técnico - University of Lisbon, the Faculty of Engineering - University of Porto and the Lisbon City Council. It was supported by more than 15 sponsors from across the water engineering community.

Under the main theme “Water - Across Boundaries”, this edition of the Congress in Lisbon focused on the importance of sharing research, technology and innovation to address unprecedented water challenges and to promote sustainable water engineering. Business as usual practices are no longer tenable. Bringing about the necessary changes is a shared responsibility.