Coastal reclamation for residential, tourism, and commercial developments in the Arabian Peninsula and other global regions has dramatically increased in recent decades. This phenomenon is undoubtedly innovative and novel; however, it disrupts the natural balance of marine environments and degrades coastal and marine resources. Moreover, the long-term sustainability of such developments might be undermined by rising water levels, earthquakes, and the behavior of filling material and others. This paper analyzed the extent of land reclamation in the Dammam Metropolitan Area (DMA) along the eastern coast of Saudi Arabia within the last two decades and its environmental sustainability impacts. The study used satellite images to compare the coastal boundary of the study area from 2000 to 2020. The study analyzed five major reclamation projects and found that a total of 6081 hectares of land has been reclaimed from the Arabian Gulf, thereby altering the coastal profile of DMA significantly. The environmental sustainability implication of these projects includes the degradation and loss of ecosystem services and marine habitat, urban sprawl, and flood risk. Therefore, environmental regulations, such as the strict prohibition of coastal reclamation, and ecosystem-based urban planning, are needed for sustainable coastal land development.
