The strategy and methodology for improved IWRM project, (STRIVER) has developed interdisciplinary methods to assess and implement IWRM. Based on the development of a multidisciplinary knowledge base assessment in all case studies (policy, social and natural sciences) and an early stage development of IWRM conceptual framework, this book investigates IWRM in the four selected twinned catchments covering six countries in Europe and Asia.Twinning activities based on a problem-based approach have been performed in four case river basins: * Tunga Bahdra (2 states in India), * Sesan (Vietnam/Cambodia), * Glomma (Norway), * Tejo/Tagus (Spain/Portugal)The problems covered are water regimes in transboundary regulated rivers; environmental flow; land and water use interaction; and pollution under the IWRM framework.The research used sub-basins of each river basin in all cases to allow more detailed studies and easier integration of all stakeholders, for transferability purposes.Strategy and Methodology for Improved IWRM * develops guidelines for interdisciplinary methods to assess and implement IWRM * assessese the transferability of case study results * enhances the dialogue between decision-makers, stakeholders and scientists * disseminates data and information to stakeholders to promote participatory planning and integrated decision-making, taking adequate account of the rights of poor people and gender roles