FIELD REPORT NOVEMBER 2021 Mapping Water Sources in the Upper Mbarali River Sub-Catchment One of the Mbarali River source of water in Waging'ombe district Njombe Region Introduction Mbarali river is one of sub-catchment within Rufiji River Basin in the Southern Highland of Tanzania facing ongoing degradation due to land use change, poor institutional management and climate change. Degradation and poor management of water sources have affected river flows in both quantity and quality with devastating impacts on the downstream including the coastal and marine ecosystems through increased inflow of nutrients, sediment deposits, and variation of flow regimes. The exponential growth of water demand catalyzed by the increase of anthropogenic activities and population growth increase the pace of environmental degradation within the sources and along the entire river to the downstream. There are initiatives which have been taken for water sources management such as establishment ...