Inherited Risk: Colonial Legacies and Climate Vulnerability in Sri Lanka – Part 1

Every monsoon season in Sri Lanka now arrives with familiar images: submerged homes in low lying districts, landslides tearing through plantation settlements in the hill country, families displaced overnight, roads collapsing under floodwaters and emergency relief distributed after devastation has already occurred.

These disasters are often framed as unavoidable consequences of climate change. Rainfall patterns are becoming more erratic. Flood cycles are intensifying. Landslide prone areas continue to expand. Climate science explains the hazards clearly but hazards alone do not explain why the same communities remain repeatedly exposed. The 2021 X-Press Pearl maritime disaster, contaminated large stretches of the western coastline after a cargo ship carrying hazardous chemicals caught fire and sank off Colombo. Thousands of fishing families lost their livelihoods almost overnight as toxic debris washed ashore and fishing bans were imposed across coastal districts. While the incident was triggered by an industrial accident, its impacts revealed how environmental risk and economic vulnerability overlap most severely for communities already living with insecure livelihoods, limited state protection and high dependence on climate-sensitive ecosystems.

The geography of climate vulnerability in Sri Lanka is not accidental, it is historically produced.

Many of the regions now identified as high risk were shaped through colonial systems of land extraction, labour control and uneven development. From plantation slopes in the central highlands to densely populated floodplains and urban peripheries, patterns of exposure today often mirror the spatial logic established during British colonial rule.

Disasters follow these geographies because vulnerability was built into them from the beginning. This matters as climate conversations still tend to treat exposure as a technical or environmental condition – a matter of rainfall intensity, poor drainage or weak infrastructure. But risk is also political and historical. Who lives on unstable slopes, who settles near flood-prone waterways and who lacks the resources to relocate are questions tied not only to climate but to land ownership, labour systems and inherited inequality.

Sri Lanka’s climate crisis is unfolding on top of landscapes that were never organised around collective safety in the first place.

The colonial logic of land

British colonial rule transformed land into an economic asset first and a social space second. Beginning in the 19th century, large sections of the central highlands were cleared for plantation agriculture. Coffee, and later tea and rubber, became central to the colonial economy. Forests were cut down extensively, hillsides were reshaped for cultivation and transportation networks were built primarily to move commodities from plantations to ports.

Land was reorganised around extraction but plantation economies did not only transform the environment, they also transformed settlement patterns close to estates and production zones. These settlements were designed for labour efficiency and control, not long-term environmental resilience or dignified habitation.

The logic was simple: keep workers close to production and minimise costs.

More than a century later, many estate communities still live within these same geographies. Housing remains concentrated on steep slopes vulnerable to landslides and erosion. Access to secure land ownership remains limited. Infrastructure and public services continue to lag behind national averages. Economic dependence on climate-sensitive plantation labour persists across generations.

Climate change did not create these vulnerabilities; it intensified exposure within landscapes already organised around inequality.

This historical continuity is important because plantation regions are often discussed today only through the language of poverty or underdevelopment, detached from the systems that produced these conditions in the first place. Therefore, current vulnerabilities cannot be separated from the historical structures that shaped where communities could live, work and build stability. The landscape itself carries the legacy of extraction.

Landslides are not simply natural events

Each time heavy rainfall triggers landslides in the hill country, the event is framed as a natural disaster intensified by climate change. Early warnings are issued, emergency evacuations follow and media coverage focuses on immediate destruction. But landslides do not occur in a social vacuum.

The impacts become catastrophic as environmentally fragile terrain intersects with historically concentrated vulnerability.

Deforestation associated with plantation expansion weakened ecological stability across large parts of the highlands over decades. Hillsides were modified extensively for commercial agriculture. Settlement density increased in environmentally sensitive areas. Drainage systems and housing infrastructure often remained inadequate.

Today, climate-induced rainfall extremes interact with these altered landscapes in predictable ways. Yet the communities most exposed to these risks are frequently those with the fewest options to relocate or recover. Estate workers and low income households often remain trapped between environmental danger and economic necessity. Relocation programmes have historically been slow, uneven or disconnected from livelihood realities. Exposure becomes cyclical rather than temporary.

Disasters displace families temporarily but many eventually return to the same high risk areas because alternatives remain inaccessible. Recovery efforts restore immediate stability without fundamentally changing the structural geography of vulnerability.

Floodplains, informal settlements and unequal urbanisation

The same patterns are visible beyond plantation regions.

Colonial land administration concentrated ownership and institutional control while marginalised communities were pushed into peripheral and environmentally insecure spaces. Post-independence urbanisation often deepened these inequalities rather than reversing them. Rapid development, weak housing protections and uneven infrastructure investment contributed to the expansion of informal settlements in flood-prone zones.

Today, climate events repeatedly map onto these same inequalities. When floods occur, it is often the same neighbourhoods that lose electricity first, experience longer displacement, face contaminated water supplies and struggle to recover economically. Informal workers lose income immediately when transport systems collapse or local economies shut down temporarily. Children miss school. Debt increases. Food insecurity rises. Climate exposure becomes cumulative.

During the November 2024 floods triggered by Cyclone Fengal, more than 475,000 people across Sri Lanka were affected as floods, landslides and infrastructure failures disrupted daily life across multiple provinces. The impacts were especially severe in the Northern, Eastern and Central Provinces where entire paddy fields were submerged, irrigation systems overflowed and thousands of farming families lost crops and income during the Maha cultivation season. In districts such as Ampara, Mannar, Trincomalee and Kilinochchi, large portions of cultivated land were damaged, forcing many households already living with economic insecurity into deeper financial precarity. Recovery was uneven. While floodwaters receded within days in some areas, many communities continued facing damaged roads, contaminated water sources, lost harvests and mounting debt long after the disaster disappeared from headlines

The problem with how risk is measured

Sri Lanka has made significant advances in hazard monitoring over the years but vulnerability itself remains poorly tracked in real time. Most climate governance systems are designed to detect visible environmental threats like rising water levels, rainfall intensity, wind speed and soil instability. Far less attention is paid to the quieter social and economic signals that often emerge before a crisis fully materialises.

This creates a major analytical gap.

Communities do not suddenly become vulnerable when floodwaters arrive. Vulnerability accumulates gradually through income instability, rising debt, disrupted mobility, declining work opportunities, food insecurity or weakened social protection. These shifts often appear before a disaster escalates.

A plantation worker losing weeks of wages due to irregular rainfall patterns. A household reducing food consumption after repeated flooding disrupts informal employment. Families pulling children from school temporarily as transportation routes remain inaccessible. Workers migrating under economic pressure after climate-related livelihood disruptions.

These are not secondary effects; they are early indicators of escalating climate stress but they remain fragmented across welfare systems, labour systems and local governance structures rather than integrated into climate risk detection itself. As a result, formal systems continue to respond primarily after visible damage has already occurred.

From hazard exposure to inherited vulnerability

Exposure is mapped geographically while vulnerability is treated as a downstream humanitarian concern. What appears as a natural disaster is often the collision between environmental shocks and historically produced inequality.

This is why the language of high risk geography can sometimes obscure more than it reveals. Risk is not simply located in certain places because of environmental conditions; it is concentrated through decades of unequal land access, labour dependency, underinvestment and exclusion.

The geography of exposure is inseparable from the geography of power. And inherited vulnerability continues to shape who absorbs the greatest costs of climate disruption today.

Acting before harm

Sri Lanka’s climate future will not be determined only by rainfall patterns or rising temperatures. It will also depend on whether systems evolve beyond reactive disaster management toward earlier detection of social vulnerability. Increasingly, the warning signs are already visible before catastrophe occurs.

The challenge is not lack of information. Hazard maps exist. Historical patterns are well documented. Communities themselves often know where risks are intensifying and which households are struggling long before institutions intervene. What remains fragmented is the integration of environmental data with real-time indicators of vulnerability and stress.

Without that integration, risk systems will continue to respond to destruction rather than deterioration. And as climate shocks intensify, the consequences of that delay will become harder to contain because the geography of risk in Sri Lanka was never natural to begin with.

It was inherited.

This is the first of a three part series on Inherited Risk: Colonial Legacies and Climate Vulnerability in Sri Lanka.