A lack of water for drinking, agriculture, industry and energy production are expected to impose risks for civil security. Therefore, it is important to assess and predict possible changes in water availability, distribution, and quality. Research needs to be impact-oriented in order to respond to crucial societal challenges resulting from changes in different components the hydrological cycle and to support adaptation and risk mitigation strategies. The appropriate context for adopting this approach is one of collaboration between scientists including hydrologists, social scientists and economists.