The Catchment to Coast Conundrum in Tanzania: The Past, the Present, and the Future of Water Resources and Anthropogenic Activities is an essential book addressing the interactions between river basins and coastal and marine environments in the West Indian Ocean region (WIO). Key issues include water and sediment quality degeneration due to pollution, physical alteration, destruction of habitats, and changes in freshwater flows and sediment loads. The WIO region is experiencing rapid population growth, causing land-based activities to exert pressure on the marine environment, degrade critical coastal habitats, and alter freshwater flow and sediment loads into the WIO. The book emphasizes the importance of science-based ecosystem-centered management of river basins for the sustainability of ecosystems in the WIO region. It discusses increased human population pressure and inappropriate land uses in upper catchments as major causes of environmental degradation. This comprehensive guide aims to provide students and researchers with essential knowledge about the area and raise awareness on the significance of river restoration and conservation in river basin management, including coastal areas.