The Transrisk project is to be considered as the development of the DFG/ANR Transrisk program «Analyse interdisciplinaire et transfrontalière de l’histoire des risques d’inondation dans l’espace du Rhin-Supérieur » (ANR-07-FRAL-025 » which has been successfully concluded in 2011. This strong partnership made it possible to create, for the southern part of the Upper Rhine, a transnational data base of historical floods for the last three hundred years. In addition, it was possible to define et classify the types of floods and the climatic context in which they took place. With case studies on a local scale in both countries, the evolution of the flood risk has been analysed and translated into maps, especially through the part played by land occupation. The results increased our knowledge and afforded a better assessment of historical floods: the conclusions have been presented and discussed with the relevant management services, especially because these services are included in the recommendations of the European Order on flood management. The link between the different stages of this Order till 2015 is a key for the new Transrisk research program. The aims are improving the methods from TRANSRISK with new case - studies and widening of the analysis in space, to enlarge the database of the historical floods from 1700 to nowdays. In the same way, the new land occupations will be studied on a regional scale and, particularly, the transformations of the waterways, which are an important factor of the historical floods. After the promising results of the first Transrisk program, the main focus point of the new Transrisk will be first to study the perception and acceptance of the risks (in particular through communication and information), secondly to analyse vulnerability, the aim of the research being to contribute to a complete and integrated management of the flood risk on both sides of the border. For this Franco-German territory, the project aims to afford a complete and coherent system of understanding of flood risk management by analysing the spatial and temporal differences and evolutions of the risk perception, the political decisions, the technical and land planning choices, the part played by public statements about risks in the current difficult context of global warming. A special attention will be given to transposing the extreme flood events since the XVth century on the existing situation. This thought process aims at evaluating the historically recurrent dramatic event more than the centennial events, which is in complete concordance with the European Order. In order to reach these objectives, the interdisciplinary study must be reinforced and the collaboration with other scientific disciplines which are able to offer new ways of thinking and new tools. But the Transrisk project is also an applied science project: it aims at the development of a territorially-rooted risk culture, through cooperation with the competent administrations and an integration of other actors of risk management on a local scale (History Societies, representatives, schools, enterprises).