As part of the Series of the FREE IAHR Water Monograph Webinars, it took place on 17 December the one focused on the latest IAHR Water Monograph titled “Guidance for Water Engineering in a Changing Climate”. The webinar attracted strong interest from the international community, with 673 registered participants, reflecting the relevance and timeliness of the topic. The session was opened by Damien Violeau, Chair of the IAHR Task Force on Water Monographs, who explained the mission of the Open Access Water Monograph Series and acknowledged the support of the University of Brescia, which made possible the free download of this publication.