Inconsistent approaches to setting reference flows and managing water permits can create conflicts, as can the absence of defined flow requirements for transboundary rivers. There is also the potential for allocation decisions to be taken at a state or basin level (and based on state or local priorities) on matters of national significance and in conflict with national priorities. For instance, while hydropower generation is a national priority, in some basins (e.g. Sao Marcos), irrigated agriculture may have more value. In such circumstances it is difficult to balance priorities between nation-wide energy needs and regional development. Stakeholders in the basins may fail to see the big picture, and national players may fail to consider local issues. There are also the benefits of a more holistic approach to basin management, which is supported by retaining greater control over management decisions at a higher level.