Demolitions and the Flood Fight: Can Pulling Down Buildings Alone Save Ghana from Flood Disasters?

Every time devastating floods hit Ghana, especially in flood-prone areas of Accra and other major cities, the conversation quickly turns to one solution: demolishing illegal structures built on waterways, wetlands, and drainage channels.

Excavators move in, structures come down, and authorities assure the public that the exercise is necessary to restore natural water flow. While these actions may be justified, a critical question remains: will demolishing illegal structures alone end flooding in Ghana? The simple answer is no.

Demolitions may be part of the solution, but they are not the solution in themselves. If Ghana treats flooding as merely a problem of illegal buildings, it risks overlooking the broader planning, environmental, and infrastructure failures that continue to turn heavy rainfall into national disasters.

There is no denying that structures built on waterways contribute significantly to flooding. Many natural drainage paths that once carried excess rainwater have been blocked by houses, shops, walls, and commercial developments. In some communities, entire neighbourhoods have emerged on wetlands that were never intended for permanent settlement.

When heavy rains fall, water naturally seeks its original course. If that path is obstructed, the result is predictable: overflowing drains, submerged roads, and flooded homes. In this sense, demolitions are not punishment; they are often a necessary corrective measure. Without reclaiming waterways, flood mitigation efforts become far more difficult.

While illegal construction is a major contributor, it is not the only reason Ghana floods. Many flood-prone areas continue to experience severe flooding even where there are few illegal structures. Why?

Because flooding is often the result of multiple interconnected failures: inadequate drainage infrastructure, poor waste management, weak urban planning, rapid urbanization, climate-related extreme rainfall events and lack of maintenance of drainage systems

This means that even if every illegal structure on a waterway were demolished tomorrow, flooding would likely continue in many areas.

One of Ghana’s biggest challenges is that urban growth has outpaced drainage development. Cities have expanded rapidly, but drainage systems have not kept pace. Roads have been constructed without adequate stormwater management systems. Some drains are too narrow, too shallow, or poorly connected to larger channels.

Others are simply overwhelmed by the volume of runoff generated by expanding urban settlements. As a result, water accumulates faster than the system can carry it away. No amount of demolition can fully compensate for inadequate drainage infrastructure.

Perhaps the most visible contributor to flooding is indiscriminate waste disposal. Plastic waste, refuse, and construction debris regularly clog drains and waterways. During heavy rains, these blocked drains become ineffective, causing water to overflow into nearby communities.

This means that flooding is not only an engineering problem, it is also a behavioural problem. A city can have excellent drainage infrastructure, but if drains become dumping sites, flooding will remain a recurring threat.

Climate change has introduced a new dimension to the flooding challenge. Rainfall patterns are becoming increasingly unpredictable, with more intense downpours occurring over shorter periods. Even cities with relatively good drainage systems are finding it difficult to cope with these extreme weather events.

For Ghana, this means flood management can no longer rely on traditional approaches alone. Infrastructure must be redesigned with future climate realities in mind. There is also an economic consideration. Demolitions can be expensive and socially disruptive. Families lose homes, businesses lose premises, and local economies can suffer temporary setbacks.

If demolitions are not accompanied by broader flood mitigation measures, the economic sacrifices may not deliver the desired outcomes. The country risks spending resources on visible actions while neglecting deeper structural reforms.

A comprehensive flood management strategy should include: strict enforcement against future encroachment on waterways, expansion and modernization of drainage systems, continuous desilting and maintenance of drains, improved waste collection and recycling systems, stronger urban planning controls, investment in flood forecasting and early warning systems, public education on environmental responsibility and protection and restoration of wetlands.

Demolitions should be viewed as one component of a larger strategy, not the entire strategy. Flooding in Ghana is often framed as a battle between authorities and illegal developers. In reality, responsibility is shared.

Government agencies must enforce planning laws consistently. Local authorities must improve infrastructure and maintenance. Citizens must stop treating drains as waste disposal sites. Developers must respect environmental regulations. Without collective responsibility, flooding will persist regardless of how many structures are demolished.

The demolition of illegal structures on waterways is necessary in many cases, but it is not a silver bullet. Flooding in Ghana is the result of decades of planning failures, infrastructure deficits, environmental degradation, and weak enforcement.

Bulldozers can clear a waterway, but they cannot build modern drainage systems. They cannot stop people from dumping waste into gutters. They cannot redesign cities for a changing climate.

If Ghana truly wants to end the cycle of annual flood disasters, the focus must move beyond demolition exercises and toward comprehensive urban resilience. Because in the fight against flooding, removing buildings is only the beginning. The real challenge is building a city that can withstand the rain.