Eastern Region
Eastern Region exhibits ecosystem engineering: Akosombo Dam (1965) flooded 8,502 km², displaced 80,000, and created the world's largest artificial lake to power Ghana. By 2026, climate change threatens hydropower output, exposing the fragility of this 60-year bet.
Eastern Region sacrificed 78 villages to power a nation. When the Akosombo Dam gates closed in 1965, the Volta River swallowed 8,502 square kilometers—3.6% of Ghana's entire landmass—creating Lake Volta, the world's largest artificial reservoir by surface area. Over 80,000 people were displaced, but Ghana gained 1,020 megawatts of generating capacity and the ability to smelt aluminum with cheap electricity. This is ecosystem engineering at the scale of a river basin: one infrastructure decision restructured the regional economy, displaced entire communities, created new fisheries, and powered Ghana's industrialization. The question wasn't whether to build—it was whether the displaced would ever recover what was lost.
The Volta River valley had sustained agriculture for millennia before the dam. The river's annual flooding deposited fertile silt, supporting farming communities from the savanna to the coast. But Ghana's 1957 independence coincided with the idea that modernization required electrification, and the Volta's hydroelectric potential—identified in British colonial surveys as early as 1915—became the centerpiece of Kwame Nkrumah's development strategy. The dam would generate power for the VALCO aluminum smelter in Tema, transforming Ghana from a colonial commodity exporter into an industrial economy. Construction began in 1961 with World Bank financing, and when the reservoir filled in 1965, it altered the region's hydrology permanently. The river that once flooded seasonally now released water on a schedule determined by turbine demand, not agricultural needs.
Relocation devastated communities. The 80,000 displaced residents were resettled in 52 new villages, often on less fertile land and far from ancestral fishing grounds. Many never received promised compensation. Yet the dam delivered: by 1966, it provided nearly all of Ghana's electricity. Lake Volta's fisheries partially offset agricultural losses—by the 1980s, the lake produced over 40,000 tons of fish annually, becoming one of West Africa's largest inland fisheries. But water hyacinth (Eichhornia crassipes), an invasive species, has choked portions of the lake since the 1990s, reducing fish catches and blocking boat traffic. The same ecosystem engineering that created new economic opportunities introduced vulnerabilities that persist decades later.
Today, Eastern Region's 2.1 million residents (11.1% of Ghana's population) depend on a mixed economy: electricity generation, lake fishing, and light manufacturing in Koforidua, the regional capital of 151,255 people. Intravenous Infusion Ltd, one of Ghana's oldest pharmaceutical companies, produces medical supplies for West African markets from Koforidua. The region supplies power nationally while struggling with its own development paradoxes: the lake provides water for irrigation but inundated prime farmland; the dam created jobs at VALCO but dispossessed farmers; cheap electricity attracted industry but concentrated benefits in Accra and Tema, not in Eastern Region itself.
By 2026, Lake Volta faces climate pressures. Declining rainfall reduces inflows, lowering reservoir levels and power output. In 2023-2024, drought forced Ghana to reduce industrial power allocations, exposing the fragility of hydropower dependence. Eastern Region, which bore the displacement costs in 1965, now watches as the benefits erode with each drought year. The region exemplifies a biological truth: ecosystem engineers often don't control the long-term consequences of their modifications. Ghana built Akosombo to power industrial modernity, but modernity's climate impacts now threaten the dam's viability.