The European Knowledge Hub on Sea Level Rise's Assessment Report strives to synthesize the current scientific knowledge on sea level rise and its impacts across local, national, and European basin scales, to support evidence-based policy and decision making primarily targeting coastal areas. Employing an integrated and interdisciplinary approach in assessing state of the art information, the report aims to not only consolidate existing knowledge but also to identify gaps in (available) knowledge. It takes the current policy landscape and adaptation planning in Europe as reference and seeks to equip decision makers with the necessary knowledge to make informed decisions about protective and adaptive measures against the impacts of rising sea levels. The European Knowledge Hub on Sea Level Rise, a joint effort between JPI Climate and JPI Oceans with participation of 9 countries, is composed of approximately 60 scientific and non-scientific European experts with varying backgrounds.