The CGIAR research program on ‘harnessing the development potential of aquatic agricultural systems for the poor and vulnerable’ (AAS) is working in 12 villages in the Tonle Sap region to identify best practices in water use and management, where lessons can be learned and promising activities can be scaled out. The work so far has identified three water management interventions that could potentially improve the livelihoods and living standards of the people in the Tonle Sap. These interventions, which are already being piloted in three focal villages include supporting access to drinking water by addressing current constraints, improving fish cage culture, and improving access to dry season irrigation water.