Transboundary Water Management in Southern Africa The project will support countries in Southern Africa to manage their shared water resources, thereby helping 2-3 million poor people to better cope with the impacts of existing climate variability and climate change (especially floods and drought). It will do this by improving assessment and planning concerning these resources, and  designing and building water infrastructure such as irrigation schemes, water supply or hydropower schemes. This will help poor and vulnerable people gain access to clean and safe water, produce a predictable agricultural yield and store water for when it is needed during the dry months of the year. The programme will also help countries to communicate hydrological data between themselves – thus providing downstream countries with advance notice of floods and enabling countries to optimise how much water is stored in each country to ensure each has enough to meet their basic requirements.