Résumé en anglais

The complexity of the interaction network among the different actors involved in flood risk management makes it difficult for risk managers to fully understand the different interconnections among the key elements, i.e. actors, knowledge and tasks. Due to their limited understanding of thenetwork, the risk managers fail to strengthen the social capital embedded in the network, reducing its role in supporting risk management. A method based on the integration between Organization Risk Analysis and Participatory Network Mapping is described in this work. The method aims at enhancing the risk managers’ understanding of the interaction network and, in doing so, at enabling the collective decision-making process for the management of risk interaction network. The method has beenexperimentally implemented for flood risk management in Lorca (Spain).