Buea, Cameroon Faces Recurring Floods Caused by Lahars
Buea, Cameroon, is experiencing frequent, damaging floods caused by lahars—fast-moving flows of volcanic ash, debris, and water—descending from Mount Fako. A significant event in April 2026 marked the third such occurrence in six years, impacting neighborhoods far beyond previously affected zones. Experts attribute the phenomenon to the remobilization of volcanic sediments following prolonged dry seasons and sudden rainfall, noting it is not a sign of volcanic eruption. Environmental Context and Causes Buea sits on the slopes of Mount Cameroon, the tallest mountain in West Africa. Lahars occur when dry-season weathering leaves loose volcanic deposits on steep slopes, which are then swept away by early seasonal rains that the parched ground cannot absorb. Research indicates that climate-driven rainfall variability and rapid urban expansion are increasing the frequency and intensity of these flows. Impact on Local Communities A 2023 UN report on a previous lahar recorded two deaths and four injuries, with 900 people directly affected. Residents report significant social and economic consequences, including ruined farmland due to debris and household waste, as well as property damage. The recent lahar reached areas like Molyko that were previously spared, disrupting local infrastructure, including schools where students were trapped by rising water. Institutional Response and Challenges Local authorities urge residents to avoid building near natural waterways and to steer clear of ravines during rainfall. While national weather bulletins exist, they failed to predict the specific impact on Buea, highlighting the need for improved neighborhood-level forecasting. Although hazard maps exist, they are often outdated or lack the granular detail required for effective community disaster preparation and urban planning.
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