VENICE - Venice was braced Sunday for an unprecedented third major flooding in less than a week, with sea water due to swamp the already devastated historic city where authorities have declared a state of emergency.

The city forecast "acqua alta", or high water, of 160 centimeters (over five feet) for just after midday, lower than Tuesday's 187 centimeters -- the highest level in half a century -- but still dangerous.

The renewed threat from exceptionally intense high tides came after a brief respite on Saturday with visitors seen wading through a reopened St Mark's Square.

The top tourist site had been shut for several hours on Friday as strong storms and winds battered the region, leaving it submerged by sea surges.

Churches, shops and homes have also been inundated in the city, a UNESCO World Heritage site.

Among the crowd gathered around the ornate basilica in bright shoe covers and plastic boots on Saturday were members of the Italian football team, who traveled to Venice on Saturday to show solidarity with the stricken city.

"On behalf of the whole team, we stand close to the city of Venice," said Italy goalkeeper Gianluigi Donnarumma.

The Italian football federation delegation visited several businesses damaged by the flooding, chatting with Venetians, volunteers and police.

"Venice will overcome this too. Like an athlete who suffers a serious injury and then gets up again," said delegation chief and former Azzurri international Gianluca Vialli.

The crisis has prompted the government to release 20 million euros in funds to tackle the devastation.

Culture Minister Dario Franceschini has warned the task of repairing the city, where more than 50 churches have suffered damage, will be huge.

And Mayor Luigi Brugnaro said the floods had "destroyed Venice" after the second major flooding of around 160 centimeters hit on Friday.

Residents whose houses have been hit are eligible for up to 5,000 euros in immediate government aid, while restaurant and shop owners can receive up to 20,000 euros and apply for more later.

Most of the city's cash machines were no longer working because of the water, making life even more difficult for tourists and Venetians. -AFP