The Convention on the Protection and Use of Transboundary Watercourses and International Lakes (Water Convention) provides a unique global legal and intergovernmental framework for climate change adaptation including flood and drought management in transboundary basins. In particular, flood and drought management is included under the programme area 4 on climate change adaptation of the Program of Work of the Water Convention for 2019-2021 (https://www.unece.org/index.php?id=51910). The Water Convention has been supporting countries and basins in adapting to climate change and managing flood and drought risk for 15 year through capacity building, exchange of experience, sharing knowledge, developing guidance and projects on the ground.