The population of Iran 's capital city is facing evacuation as the threat posed by dwindling water supplies continues to mount. The Karaj Dam, which supplies Tehran's 15 million residents with a quarter of their drinking water, is currently at just 8% capacity, with others in similarly dire straits, prompting officials to consider drastic measures. The Middle Eastern country has been contending with severe drought for six years due to low rainfall, with reservoir levels reaching especially critical levels in recent months.

Water rationing has already been imposed in some parts of the city, but the worsening trend is also forcing discussion of more drastic solutions. Professor Kaveh Madani, director of the United Nations ' (UN) University Institute for Water, said Tehran only has "a

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