The city of Dar es Salaam in Tanzania requires significant new surface water resources if it is to meet Sustainable Development Goal 6. This study reports on the development of a hydrological model, using existing data, which assesses the impacts of upstream irrigation abstraction on downstream water security for the city. Results indicate that water deficits will likely still occur in dry years even after the construction of an additional storage dam. Water managers will need to finely balance upstream and downstream demands within the catchment, using improved knowledge of the state of the water resource.
IIED Briefing: Meeting future demand for drinking water supply in Dar es Salaam: Hydrological modelling of the Ruvu River and assessment of flows
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