Venice braces for more high water as alarms sound

Venice braced itself for more rising waters on Thursday as Italy's government prepared to take emergency measures for the canal city struck by an exceptional tide this week.

Venetians awoke to sirens indicating that the high waters were expected to exceed 130 centimetres (50 inches), enough to bring the salty dirty water back again into the UNESCO city's historic centre.

On Tuesday, the highest tide in 50 years ripped through the historic Italian city, peaking at 1.87 metres (six feet).

As authorities on Thursday prepared to assess the extent of the damage to Venice's cultural treasures, such as St Mark's Basilica where water had invaded the crypt, locals remained defiant.

"It's my living, what can I do?" Stefano Gabbanoto, 54, replied when asked why he was opening his newspaper kiosk knowing he would have to close up soon.

He said he would continue to sell the colourful plastic high boots stacked in bins around the kiosk even once it was shut.

Under the arches of the Ducal Palace, a couple from Hong Kong posed for photos and video in the chilly morning sun.

"This was planned a long time ago so we couldn't change it," groom Jay Wong, 34, said. His bride, Sabrina Lee, "looks cold," he admitted.

"Actually this is a good experience," Wong said. "It's an aventure."