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As of November 2025, Iran is enduring its worst drought in six decades, with Tehran experiencing its lowest rainfall in a century. Reservoirs supplying Tehran and other major cities are critically depleted, prompting government plans for water rationing and warnings of possible evacuation if rain does not arrive soon. The crisis stems from climate change, mismanagement, and infrastructure damage.
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A wildfire in Iran's Hyrcanian forests, a UNESCO World Heritage site, reignited on November 15 due to drought and suspected illegal activity. Iran has requested international firefighting assistance, including from Turkey and potentially Russia, as efforts continue to contain the blaze threatening biodiversity and ancient ecosystems.
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Tehran's reservoirs are critically low, with reservoirs at 8-40% capacity amid record drought and rising demand. Authorities have implemented water rationing, and climate change, population growth, and mismanagement are key factors. The crisis threatens city stability and highlights global water scarcity risks.