Ghana’s coastal erosion could worsen – Researchers warn

Ghana's coastline is facing mounting pressure, with researchers forecasting that erosion could worsen in the years ahead due to a decline in sediment discharge from the Volta River. This warning emerges from a preliminary study conducted by the Integrated Sediment and Environmental Management Project, a five-year endeavor funded by the Japan International Cooperation Agency (JICA) and spearheaded by the University of Cape Coast in Ghana.

Utilizing satellite data, cameras, drones, wave sensors, and other tools, the project meticulously monitors shoreline alterations, sediment movement, and coastal hazards.

The analysis of the Ghanaian coastline over the last two decades highlights the Volta River and Densu Delta regions as particularly vulnerable to coastal erosion. On-the-ground observations have documented significant beach loss, with a particularly alarming 10 meters of sand eroded at Dzita in the Volta Region within a mere two months.

Professor Yoshimitsu Tajima, a Lead Researcher from the University of Tokyo, cautions that the dwindling sediment from the Volta River could exacerbate the erosion crisis. "The sediment around the Volta River is rapidly decreasing," he explains. "In the future, the shoreline retreat could accelerate, posing a serious challenge."

Dennis Aheto, the Vice Chancellor of the University of Cape Coast, emphasizes the project's potential to bolster coastal management strategies with robust scientific backing. "This project will furnish us with more accurate data to inform decision-making," he asserts. "By integrating additional equipment, researchers will be able to measure wave heights, the extent of coastal erosion, bathymetry, salinity, and other critical marine and ecological parameters."

Ultimately, the project aims to develop predictive models that will assist in devising appropriate short and long-term measures to safeguard Ghana's coastline against the looming threat of accelerated erosion.