This study explores the morphological evolution of the Oued Tensift estuary and the Souiria Laqdima beach over the period 1985–2023, focusing on the impacts of natural and anthropogenic factors, particularly extreme events such as the 2014 floods. By utilizing a combination of diachronic satellite imagery analysis and shoreline mapping through CoastSat software, we identified critical patterns of erosion and accretion, highlighting the vulnerability of these coastal systems to both natural processes and human intervention. The study reveals that coastal changes are not only driven by hydrodynamic forces, such as tidal activity and sediment transport, but are also exacerbated by increasing urbanization near the estuary. The findings underscore the necessity for adaptive and integrated coastal management strategies that consider both immediate risks and long-term environmental pressures, particularly in light of climate change and rising sea levels. Our research offers valuable insights into the complex dynamics governing coastal systems and provides a solid framework for sustainable planning and decision-making to enhance the resilience of these fragile environments.