Erik Mosselman is a river scientist and hydraulic engineer with special expertise in fluvial morphodynamics, river training, ecological river restoration and flood risk management. He worked on numerous rivers and deltas in Europe, Asia, Africa and the Americas. He combines broad system analysis and mathematical methods with practical engineering in research, consultancy, education and strategic advice. As a research manager, he led research programmes and international work packages encompassing numerous PhD projects. He was the leader of innovation and development of numerical morphodynamic models at Delft Hydraulics / Deltares and supervised laboratory experiments and field research. He is an expert in long-term river evolution under global change and was an invited speaker at the COP21 climate conference in Paris in December 2015. Key topics in his research are riverbank erosion, bars, meandering, braiding, bifurcations and avulsions. He has a keen interest in nature-based solutions for river restoration and adaptive river training, currently focusing on tidal parks in the Rhine-Meuse Estuary. He has been involved in the Dutch Room-for-the-River programme for over 25 years, developing methods for morphological impact assessment and acting as a national auditor for such assessments by engineering consultancies. For the European Union he participated in defining hydromorphological conditions for good ecological status according to the Water Framework Directive.