This document summarises outcomes relating to flood mitigation and coastal resilience from the report ‘Nature-based Solutions: State of the Art in EU-funded Projects’ (Wild et al. (Eds.) 2020) prepared through the EC’s Valorisation of NbS Projects Initiative. EU research and innovation projects were scanned for results pertaining to key areas such as Floods Directive, EU Action Plan on the Sendai Framework for Disaster Risk Reduction 2015-2030 and EU Strategy on Adaptation to Climate Change. Evidence from the reviewed projects (and the EC’s NbS policy topic area) is framed within knowledge from the literature within the realm of floodrelated policy, to give as full a picture as possible about the state-of-theart with relevant NbS. Contextualised information is provided on policy developments, research results and key lessons. The resulting evidence base includes figures and monetary values showing the relative cost-effectiveness of NbS, and exploring how they support flood-related policy implementation. Policy recommendations and knowledge gaps are also highlighted to support the strengthening of strategies and practical action for the uptake of NbS, to deliver targeted and efficient interventions to help solve societal challenges in Europe and beyond.