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How did tides help flush Venice’s canals?
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Venice
Santa Maria della Salute, Venice, where the Grand Canal opens into the San Marco Basin.
The Venice Lagoon has historically functioned as a natural sewerage system for the city. The tides of the Adriatic Sea play a vital role in this process by flushing out the city’s canals twice daily. This tidal action helps maintain the water quality within the urban network by circulating the lagoon's waters through the channels that weave between the islands.12