16/06/2026
Why is Accra flooding again? Let’s talk Geoscience.
Ever wondered if floods in Accra would ever become a thing of the past❓
Why is Accra’s case different❓
And is demolishing buildings in waterways really the full solution❓
Beyond the haphazard infrastructure, choked drains, and weak structures, there’s a deeper story — one written in the soils, water systems, and rocks beneath our feet.
Most people see drainage or waste management problems. As a geoscientist, I see a landscape screaming for help.
Here’s what’s really happening and why every urban stakeholder needs to look beneath the surface.
1️⃣ The soil has forgotten how to breathe.
Accra’s rapid urbanization replaces natural, permeable soils with concrete and asphalt. Rainfall can’t infiltrate, so it races across the surface. This is soil sealing — a classic trigger that turns ordinary rain into destructive flash floods.
2️⃣ We’ve lost our natural sponges.
The city was once cushioned by wetlands like the Sakumo Ramsar site, the Densu Delta, and networks of smaller lagoons. These hydrological features aren’t just scenic — they’re functional infrastructure. Every drained or built-up wetland is a permanent flood defence removed.
3️⃣ Climate change is supercharging the system.
Warming oceans in the Gulf of Guinea are driving up rainfall intensity. Over the last two decades, the frequency of extreme rainfall days along Ghana’s coast has increased measurably. More water falling on sealed ground multiplies disaster risk.
4️⃣ The underlying geology is being ignored.
Greater Accra sits largely on unconsolidated Quaternary sediments and faulted coastal blocks. Understanding aquifer recharge, subsurface drainage, and shallow geology isn’t academic — it’s the missing puzzle piece in urban planning. Yet geoscience data rarely makes it into city development frameworks.
💡 The good news? Nature-based solutions work.
Preserving wetlands, restoring urban green spaces, and mandating permeable pavements are cost-effective ways to reduce flood risk. Ghana’s legal framework (including the Environmental Protection Authority Act and the Land Use and Spatial Planning Act) already provides the backbone to enforce this. We only need the will to act.
Let's open the floor:
What is one practical, nature-based solution you believe Ghana’s cities should adopt immediately? Drop your perspective below.
I’m an earth science professional, and I break down Africa’s most pressing geoscience issues.
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