Rivers in the tropical region are among the most powerful agents of geomorphic processes and can be metaphorically described as the “veins of the landscape.” This metaphor effectively captures the crucial role rivers play in shaping landforms and sustaining aquatic and terrestrial ecosystems. Despite their immense significance, rivers are increasingly endangered by anthropogenic pressures such as pollution, dam construction, and excessive water extraction. In the twenty-first century, many rivers are losing their natural flow regimes, ecological equilibrium, and even their economic and cultural relevance due to both human-induced and environmental stressors. This paper critically examines the multifaceted importance of rivers, the underlying causes of their degradation, and the pathways toward resilience and sustainability. Emphasis is placed on data-driven insights to underscore the indispensable role rivers play in maintaining ecological integrity and supporting human societies. The scope of this study is centered on the major river systems of India. The result shows that degradation in India encompasses the physical, chemical, and ecological deterioration of river systems, driven by both natural processes and anthropogenic pressures. The phenomenon threatens not only water quality but also biodiversity, ecosystem services, and socio-economic stability. Riverine biodiversity and habitat degradation are caused by toxic pollutants. Loss of riparian vegetation and alteration of sediment dynamics degrade the physical habitat structure. Addressing the multifaceted challenges of river degradation requires a holistic, multidisciplinary approach that combines scientific insight, policy intervention, and public participation. Only then can the ecological integrity and sustainability of these vital watercourses be ensured.