What is a rain-induced landslide?
Quick Answer
A rain-induced landslide is the downslope movement of rock, soil, or debris triggered by heavy rainfall. Water weakens slopes by adding weight and reducing friction.
The Full Story
When intense rain saturates the ground, it can raise pore-water pressure and destabilize slopes, causing them to fail suddenly. Landslides are common in steep mountainous regions, road cuts, deforested areas, and places burned by wildfire where vegetation has been lost. They can bury homes, block rivers, and damage transport routes. Rainfall-triggered landslides are a major hazard in places such as Nepal, Colombia, and parts of the Pacific Northwest.
Key Facts
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"When rain turns a hillside into a moving disaster"
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