According to the International Water Management Institute(link is external), institutions evolve depending on the nature of water resource issues that a river basin faces and, in that sense, are not static systems but adaptive and dynamic systems. IWRM’s potential contribution to increasing water productivity lies in its ability to approach natural resource management problems in an integrated fashion. Resources available in this sub-theme include models and evaluations of water management systems, examples of institutional frameworks and others that support managing integrated water resources.