During the 20th century, when many artesian wells were sunk into the periphery of the lagoon to draw water for local industry, Venice began to sink.
It was known that extraction of the aquifer was the cause.
This sinking process has slowed since artesian wells were banned in the 1960s.
However, the city is still threatened by more frequent low-level floods that creep to a height of several centimeters over its quays, regularly after certain tides.
Some recent studies have suggested that the city is no longer sinking, but this is not yet certain; therefore, a state of alert has not been revoked.
Venice is one of the most important tourist destinations in the world!
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