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Nightmare 'Dana/Adam': Why the brown water at Cala Llamp is only a symptom

Cala Llamp’s brown water: what it reveals about planning

Why Cala Llamp turned brown: runoff, drainage and planning gaps in Mallorca.

Published: October 19, 2026
Nightmare 'Dana/Adam': Why the brown water at Cala Llamp is only a symptom

Answer

What caused the brown water at Cala Llamp during Mallorca's rainstorm?

Heavy rainfall produced surface runoff that carried mud and debris from the land into Cala Llamp, turning the water brown. Sealed soils and a lack of retention basins allowed water to surge quickly, bringing sediment into the bay. Issues with drainage and sewage systems can worsen the effect.

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