Greening Accra: A Missing Strategy in the City’s Flood Control

Accra is flooding again, and increasingly, this is no longer news. What once appeared as occasional seasonal disasters has now become an annual cycle of destruction that residents have come to expect with alarming certainty. The question is no longer whether floods will occur, but how severe they will be and how many lives and livelihoods will be disrupted.

The Ghana Meteorological Agency recently confirmed that June 2026 was the wettest month ever recorded in the country. The month ended with an intense wave of storms that dumped between 140 mm and 169 mm of rainfall on Accra within less than 24 hours. The result was predictable: submerged roads, stranded residents, damaged property, disrupted businesses, and renewed national anxiety.

Yet the more troubling issue is not merely the occurrence of floods, but their expanding intensity and reach. Areas that historically experienced little or no flooding are increasingly becoming vulnerable. Each year, the floods appear deeper, spread farther, and leave behind greater destruction.

This persistent crisis strengthens the argument I made in an earlier article for relocating Ghana’s capital from Accra and other topographically constrained coastal zones to a more suitable location such as Yeji. While such a proposal may appear ambitious, we cannot ignore the reality that Accra’s geography itself poses long-term challenges that infrastructure alone may struggle to overcome.

For years, discussions about Accra’s floods have focused on familiar explanations: poor urban planning, rapid urbanization, inadequate drainage systems, encroachment on waterways, and rising sea levels affecting our low-lying coastal landscape. Significant attention has also been given to large engineering interventions and expensive infrastructure projects.

These explanations are valid. But governments have repeatedly pursued large-scale, externally funded flood-control systems while overlooking simpler and potentially effective interventions that lie within immediate reach.

The most direct cause of urban flooding is excessive stormwater runoff. When rain falls faster than the ground and drainage systems can absorb it, water accumulates and overwhelms the city. The solution therefore cannot depend solely on concrete channels and drains. Sometimes the simplest answers are hidden in plain sight.

This is where greening Accra becomes important.

Cities around the world increasingly recognize that trees and vegetation are not simply aesthetic additions to urban landscapes; they are critical infrastructure. Trees intercept rainfall before it reaches the ground, root systems improve water infiltration, and green spaces naturally reduce runoff volumes. At the same time, vegetation cools cities and helps reduce the warming trends that intensify extreme weather events.

Climate change is making the atmosphere warmer and capable of holding more moisture, resulting in more intense and frequent rainfall events that often exceed the design capacity of urban drainage systems globally. Therefore, addressing climate change is not separate from flood prevention; it is part of flood prevention.

Unfortunately, Accra has increasingly replaced natural surfaces with concrete. Growing up in Ghana, many homes used living hedges such as milk bush and hibiscus as boundary fences. Today these natural barriers have largely disappeared, replaced by concrete walls, metal gates, and expanding paved surfaces that shed water rather than absorb it.

The city can learn from examples elsewhere. Portland in the United States has adopted rain gardens and bioswales that capture and absorb stormwater at street level. Singapore has strategically integrated green spaces into urban design to improve water absorption and reduce flood risk. Such approaches are not luxuries reserved for wealthy nations; they are practical solutions that can be adapted to local conditions.

Our architects and builders must also embrace innovation. Green roofs, which use vegetation to cover building surfaces, can absorb rainfall, slow runoff, and reduce the amount of water entering streets and drainage systems during heavy storms.

Of course, greening alone will not solve Accra’s flooding crisis. Citizens must stop dumping waste into drains, authorities must protect wetlands and floodplains, and stricter enforcement of development regulations is essential. But while we continue investing in large engineering projects, we should not ignore the simpler interventions that can work alongside them.

Accra does not necessarily need more concrete to survive. It may need more trees.

The annual floods confronting the city are not simply infrastructure failures; they are warnings. The choice before us is whether we continue reacting after every disaster or begin redesigning our cities for resilience before the next storm arrives.

Shaibu A. Gariba
https://www.linkedin.com/in/shaibu-gariba/

Email: shaibu.gariba@gmail.com

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