This working paper aims to create a more comprehensive understanding of how the impacts of CC will be realized at different scales in Nepal (from household livelihoods to national food security), and the many institutions governing the ultimate adaptation process. SectionI, Background, provides background information on Nepal. SectionII, Climate Change in Nepal, addresses the anticipated impacts of CC on water resources and agricultural systems in Nepal. SectionIII, Mapping of Relevant Institutions for Climate Change Adaptation, provides a theoretical discussion of adaptation and, through a case study analysis of the Koshi River Basin using institutional mapping to assess the various hierarchies of resource management and development in the basin, attempts to understand the institutional framework that will ultimately govern the adaptation process. Section IV, Constraints to Adaptation, describes the current constraints to adaptation. Finally, Section V, Conclusions and Recommendations