A devastating flood event in southern Ghana has claimed at least 13 lives, with dozens more displaced, as torrential rains overwhelmed drainage systems in the capital Accra and surrounding districts. The catastrophe has reignited a contentious debate about infrastructure resilience in former colonies, where British-era engineering works are proving notably more robust than their modern counterparts.
Data from the Ghana Meteorological Agency indicates that over 200mm of rain fell in a 24-hour period, a volume that exceeded the capacity of many contemporary stormwater channels. Yet in several districts, including the historic Jamestown area, drainage networks constructed under British colonial rule from the 1890s to the 1950s functioned effectively, preventing further loss of life.
The contrast is stark. According to a 2020 study by the University of Ghana, modern drainage systems in Accra have a design capacity of approximately 25mm per hour, while colonial-era systems can handle up to 40mm per hour. This discrepancy is attributed to differences in engineering standards and materials. British engineers built with high-quality concrete and wider cross-sections, anticipating extreme events that climate change is now making routine.
Professor Kwame Asante, a hydrologist at the University of Ghana, explained that colonial-era planners did not have perfect foresight, but they did overengineer for safety. They used design storms with return periods of 100 years, a standard that modern developers often ignore in favour of cost-cutting. As a result, many recent housing estates in floodplains lack adequate drainage.
The tragedy also underscores the broader challenge of adapting to a warming planet. Ghana has experienced a 10% increase in annual rainfall since 1960, with extreme events becoming more frequent. The country's infrastructure, however, has not kept pace. While colonial systems were built for a different climate, they happen to be more resilient to the new regime.
This is not a nostalgic call for empire but a cold assessment of physical reality. British imperial infrastructure was designed for extraction and control, but it was also built to last. Railwa lines, ports, and drainage works from that era continue to function often better than post-independence replacements. The reason is simple: colonial administrators had the authority to impose long-term planning and secure funding for high-quality materials. Modern governments face short electoral cycles, corruption, and pressure to minimise costs, leading to shoddy construction.
The flood catastrophe also reveals the human cost of inadequate infrastructure. Most of the dead were residents of informal settlements built on low-lying land, where drainage is non-existent. These communities, predominantly poor, are the most vulnerable to climate impacts. The colonial legacy is not a solution in itself but a reminder that durable infrastructure requires political will and investment.
As the climate crisis intensifies, Ghana must make difficult choices. Retrofitting urban drainage to match colonial standards would cost billions of cedis. But the alternative is more deaths and economic disruption. Already, the floods have caused an estimated 500 million cedis in damages. The cost of inaction is rising.
Standing on a bridge in Accra, watching brown water surge through channels built by the British over a century ago, one cannot escape the irony. A system designed for imperial control now outperforms the democratic efforts of a sovereign nation. The lesson is not to mimic the past but to learn from it: infrastructure is a long game. Climate adaptation demands the same foresight, the same commitment to quality, that the colonial engineers once demonstrated, albeit for their own ends.
Ghana's current government has pledged to overhaul the national drainage master plan, but promises must be backed by funding and enforcement. The 13 dead are a low number compared to some recent flood disasters in West Africa, but each life is a statistic of failure. Until modern infrastructure matches or exceeds the resilience of colonial works, such tragedies will repeat. The climate does not care about politics. It only responds to physics.
