Inside Venice’s 50-year combat towards lethal floods

Libreria Acqua Alta is Instagram well-known. Greater than 30,000 folks have tagged themselves visiting the enchanting bookstore, however not like different in style buildings in Venice, Libreria Acqua Alta is not a church or canalside palazzo. It is quintessentially Venice in one other manner: It is designed to outsmart the floods which have plagued the town for hundreds of years.

Inside you may discover books on Venetian delicacies stacked inside bathtubs. English and Italian fiction titles are wedged beside one another, packed tightly in a gondola stretching from one facet of the cramped store to the opposite. They are not simply there so as to add ambiance. When the Italian metropolis floods, because it does dozens of occasions a yr, the bathtubs and gondola float, safeguarding the books inside. 

Libreria Acqua Alta will get its title from this phenomenon: Acqua Alta, which implies “excessive water,” refers back to the excessive tides from the Adriatic Sea that blow into the Venetian Lagoon. These floods have been a reality of life for Venice because the fifth century, however resulting from rising sea ranges attributable to local weather change, they now pose a damaging risk. 

There have been 34 cases of acqua alta between 2014 and 2018 that exceeded 110 centimeters (43 inches), sufficient to flood chunks of the town and trigger power harm to its infrastructure. There have been simply 30 such occasions between 1875 and 1951.

Town’s residents, historic buildings and irreplaceable artwork are in danger. Some contend Venice itself can be unlivable by the top of the century. A number of options have been proposed, similar to pumping water or liquid cement beneath Venice to lift the town, in addition to additional fortifying the lagoon’s pure defenses.

Venice’s Libreria Acqua Alta suffered flooding in November 2019.


As a substitute, the Italian authorities is considering on a grander scale. It is spent the previous 17 years constructing MOSE, a multibillion-euro infrastructure venture revolving round 78 remote-controlled gates that may rise when crucial to dam excessive tides from getting into the Venetian Lagoon. 

On July 10, all 78 gates had been raised for the primary time throughout a public demonstration, however the authorities remains to be anxious to reassure Venice’s residents that the plan, which will not be totally purposeful till the shut of 2021, will work. Beset by corruption and delays, MOSE itself has develop into an issue. Critics say that the gates will not be as efficient as the federal government envisions and that they’re going to need to be raised so incessantly that Venice’s sewage can be trapped within the Lagoon, killing off its ecosystem. 

“That is the dying of Venice,” stated Fabrizio Antonioli, a geologist at ENEA, a public sustainable improvement agency. 

If every thing had gone to plan, the MOSE gates would have been prepared in 2011. However 9 years later, and four billion euros over the unique 1.6 billion ($1.Eight billion) euro price range, MOSE would possibly by no means rise to the problem of saving Venice. 

The largest acqua alta in historical past got here in 1966, reaching 1.94 meters.


Local weather disaster

Resting on the northern finish of the Adriatic Sea atop 118 islands which might be linked by bridges and separated by canals, Venice is outlined by water. After centuries of Venice ruling parts of the Mediterranean Sea as a maritime energy, the town’s iconic canals now appeal to round 20 million vacationers a yr. But the water that protected its first settlers from invasions has develop into the town’s most troubling legal responsibility. A excessive tide and a robust wind from the ocean, blowing the Adriatic’s water into the shallow lagoon, is all that is wanted to flood Venice’s decrease districts.

Robert Rodriguez/CNET

Like Libreria Acqua Alta, Venice is designed to work with flooding. Electrical junction packing containers are saved the place even the best of tides cannot attain. Elevated wood walkways, or “duckboards,” are arrange shortly to attach buildings when sidewalks are submerged. Gondolas are designed in order that their heads will be eliminated (and later reattached) to make sure secure passage beneath bridges as water ranges rise. However final yr one massive acqua alta arrived so shortly the town had no time to react. 

“It began out of the blue,” recollects Diana Zamda, an worker at Libreria Acqua Alta. “I’ve by no means seen something like that.” All it took was “40 or 50 minutes” for a standard day in Venice to transition into chaos.

Zamda is describing Nov. 12, 2019, when Venice was ravaged by catastrophic floods. Water rose as excessive as 1.87 meters (6.1 ft), half a meter greater than anticipated, inflicting an estimated $1.1 billion in harm. Historic buildings had been deluged, lodges had been shut and two folks had been killed. And Libreria Acqua Alta’s defenses had been overwhelmed, with a whole lot of books broken or misplaced. 

St. Mark’s Sq., the vacationer and historic centerpiece of the town.


Just one flood within the metropolis’s recorded historical past was extra damaging than 2019’s, again in 1966. A 1.94-meter acqua alta, often called the Acqua Granda, ravaged the town. 1000’s of residents had been pressured to evacuate their properties, an estimated 75% of outlets had been broken and $three billion in paintings was misplaced.

Since then, Venice’s inundations have skyrocketed with no signal of abating. St. Mark’s Sq., the town’s historic and vacationer centerpiece, flooded lower than 10 occasions a yr within the first decade of the 20th century. In every of the previous 5 years, it is flooded 60 occasions

One among Venice’s decrease factors, St. Mark’s Sq. now floods round 60 occasions a yr.


Venice’s floods aren’t attributable to local weather change, however world warming is a significant factor. Simply as local weather change provokes bushfires in Australia by worsening preexisting circumstances like drought and dry soil, it magnifies Venice’s inherent vulnerability to floods by way of rising sea ranges — from 2.5 millimeters a yr within the 20th century to round 6 millimeters a yr in current a long time

Venice’s methodology of water-level measurement evinces the extent to which local weather change has magnified the difficulty. Base stage, zero centimeters, refers back to the water stage of 1872, when the first tide gauge was put in. When officers be aware that the town begins to flood as sea ranges attain 80 centimeters, they imply 80 centimeters above the 1872 stage. However the sea stage has risen by round 30 centimeters, or 12 inches, within the 150 years since. With this raised sea stage, the brand new unofficial common, tides solely have to rise 50 centimeters earlier than components of the town start to flood. 

Native human exercise is exacerbating the town’s water woes, too. A post-World Warfare II plot to industrialize a close-by city led to extreme pumping of Venice’s groundwater from the ’50s to the ’70s, inflicting the town to sink 12 centimeters and positioning it much more precariously. (And resulting from tectonic exercise, the town continues to sink a couple of millimeters every year.)

“Flooding of Venice has occurred many occasions throughout its historical past,” wrote Caroline Fletcher and Tom Spencer of their 2005 guide on Venice, however “the final 50 years represents an unprecedented interval of frequent and intense occasions.”

Duckboards are saved available for fast development so residents can go about their day throughout gentle floods, which happen dozens of occasions a yr.


Venice’s authorities has been actively combating flood circumstances since 1966’s Acqua Granda. Within the years that adopted, explains Carl Amos, Southampton College’s professor emeritus of earth and ocean sciences, the native authorities bolstered the town’s defenses. Canals had been dried out so the town’s foundations might be fortified, walkways had been raised to face up to larger tides, and salt marshes and mudflats within the Venetian Lagoon had been cultivated to dam incoming ocean water.

“A variety of the work was performed by the municipality of Venice. It was all native,” says Amos, who’s been learning Venice for over 25 years. He stated these renovations, although not spectacular, had been efficient. Sadly, many cures will be enacted solely up to some extent. You may increase pavement however not doorways, for instance, so additional elevating walkways would imply residents crouching by way of doorways. (One of many extra generally proposed options to MOSE is to proceed engaged on the Lagoon’s mudflats and salt marshes.)

Within the 1980s, Italy’s nationwide authorities determined it will repair Venice’s water issues as soon as and for all. It conceived a venture known as MOSE, quick for Modulo Sperimentale Elettromeccanico (Electromechanical Experimental Module), and Italian for Moses. It could be named after a biblical determine, however now, nearly 40 years later, few are satisfied MOSE is the reply to Venice’s prayers. 

MOSE woes

The concept sounds believable. MOSE’s 78 cell gates could be constructed alongside the three inlets that join the Adriatic Sea to the Venetian Lagoon. Like London’s Thames Barrier or the Maeslantkering defending Rotterdam from the North Sea, the gates can be remotely erected when tides rise, blocking water from getting into the Lagoon and saving Venice from heavy floods. The gates are then remotely retracted as soon as the ocean stage lowers.

A easy plan, however a gargantuan venture. Consorzio Venezia Nuova, the physique set as much as handle the scheme, needed to construct one thing that would shield Venice from floods with out endangering its ecosystem or creating a big construction that may blight its magnificence. That meant, not like the Thames Barrier or the Maeslantkering, the gates must stay underwater.

The MOSE gates are the three entrances to the Venetian Lagoon.

Robert Rodriguez/CNET

“MOSE is the one answer to this inconceivable downside,” argues Giovanni Cecconi, an engineer who labored on MOSE for 28 years. 

The primary feasibility examine for cell dams as an answer to Venice’s floods was submitted in 1971, with laws passing on the proposal two years later. Politicians and engineers argued over and modified the venture for 30 years earlier than development started in 2003. At the moment, its price was estimated to achieve 1.6 billion euros over an eight-year development interval.

That forecast proved to be extravagantly optimistic. 9 years after the scheduled completion date, work on MOSE continues. In 2014 the up to date price was €5.5 billion, 343% over the unique price range. Now some estimate MOSE’s true constructing prices to be round Eight billion euros. The present estimate is for the gates to be operational in late 2021. This cuts a piece out of MOSE’s deliberate lifespan. 

“It was purported to be completed in 2011,” says Jane da Mosto, an environmental scientist and co-founder of We Are Right here Venice, an NGO devoted to the town’s preservation. She notes that Italy’s authorities designed MOSE to final for a century. “We have already misplaced 10 years of the so-called 100 years working time,” she sighs.

Tardiness is much from MOSE’s solely concern. Whereas deployed, the gates would block ships from reaching and leaving ports, a significant a part of the town’s economic system. Extra importantly, they’d lure sewage, which flows out from the town into the Adriatic Sea, within the Venetian Lagoon.

Attributable to these unwanted effects, MOSE is just meant for “very intense excessive tides,” the official categorization of people who attain 110 centimeters. These trigger essentially the most deleterious floods, however are uncommon sufficient, occurring solely a handful of occasions a yr, for MOSE to not severely hurt the lagoon’s ecosystem.

Or at the very least, they had been uncommon sufficient. There’s one other downside the venture’s designers did not anticipate: A woeful underestimation of sea stage rise means the gates can be deployed much more incessantly than initially deliberate. The engineers accounted for a 20 centimeter rise over MOSE’s 100-year lifespan, in response to da Mosto. A 2019 report by the Worldwide Panel on Local weather Change says a 60 centimeter rise is extra probably.

“MOSE have to be used not two or thrice a yr [as officials thought]” says ENEA’s Antonioli, “however for instance 25, 30 occasions a yr.” Others estimate the gates will ultimately need to be deployed a whole lot of occasions a yr.

This could spoil the town’s ecosystem. Sewage from Venice could be trapped contained in the lagoon for prolonged intervals of time, inflicting heavy algae development. This algae would suck in all of the oxygen, killing every thing else. 

“If you happen to go across the lagoon, there’s a vibrant fishing neighborhood, a clam trade, a fishery, there are fish farms south of Venice,” Amos defined. “You are taking a look at [hundreds of millions of euros] a yr in worth within the fisheries. … All of that’s prone to be at risk.”

Consultants produce other gripes, too. Decrease areas like St. Mark’s Sq. can flood with tides as little as 80 centimeters, as an example, which means MOSE will largely go away it susceptible by design. Equally, components of Venice flood from under resulting from antiquated piping strategies, one other downside MOSE will not remedy.

Idea artwork that reveals how every gate erects from its underwater lodging.

Consorzio Venezia Nuova

Cecconi acknowledges the complication of a rising sea stage, however says this does not cut back MOSE’s necessity. He concedes that MOSE could not final for its 100 meant years, however says the system can be extra worthwhile to Venice throughout its years of operation, since it’s going to be wanted extra incessantly than anticipated. He isn’t a stalwart defender of the venture, however rejects those that suppose that MOSE is designed to repair all of Venice’s issues.

“In case you are oversimplistic and also you simply say ‘this last answer goes to final ceaselessly or it is going to fail,’ oh sure, it is going to fail,” he says. “It has by no means been stated that that is the ultimate answer. That is insurance coverage to achieve time for one more answer. That is the which means of adaptation.”

Nonetheless, early exams of a few of the venture’s gates reveal a extra deflating concern. MOSE could not even function as meant — at the very least, not with out exorbitant upkeep prices. A number of distorted hinges on the base of gates had been discovered throughout June 2019 trials close to Lido, one of many islands of the Venetian Lagoon. That they had largely been corroded by salt, in response to La Nuova Venezia. Extra rusting and salt corrosion was found in Might.

“If you happen to distort the hinges, then clearly they won’t rise correctly,” explains Amos. “Primarily, they’re rendered ineffective.”

Consorzio Venezia Nuova didn’t reply to a number of requests for remark. Alessandro Soru, MOSE’s present venture supervisor, final yr advised the Wall Avenue Journal: “It is a lengthy course of that takes tweaking, and primarily based on the exams now we have performed there may be completely no indication that MOSE will not work.” 

Giuseppe Conte, Italy’s prime minister, watches the MOSE gates rise on July 10.

Anadolu Company/Getty

Watergate scandal

With doubt mounting over MOSE, the consortium sought some vindication on July 10. In a ceremony attended by Giuseppe Conte, Italy’s prime minister, all 78 MOSE gates had been lifted in a public check designed to show the system’s competence. Consorzio Venezia Nuova had beforehand examined sections of MOSE, however by no means earlier than had your entire set of gates been raised concurrently. 

With the disclaimer that climate circumstances can be much more violent when MOSE is required — winds had been 4 occasions as robust throughout final November’s Acqua Alta — the demo went off with no hitch. But even the prime minister was cautious about being too optimistic.

“We should all hope it really works,” Conte stated to reporters, after acknowledging the venture’s historical past of “corruption and malfeasance.” 

MOSE’s unhealthy popularity is not only a matter of poor planning, however venality too. In 2014, MOSE grew to become the middle of an enormous corruption case. Consorzio Venezia Nuova is accused of funneling cash away from the venture and utilizing it to bribe dozens of politicians and officers in alternate for supporting the more and more scrutinized venture.

Venice’s mayor, Giorgio Orsoni, was accused of misusing funds embezzled from MOSE to finance social gathering actions. In June 2014, he was positioned beneath home arrest and compelled to step down, however not earlier than blaming his Democratic Social gathering, saying it suggested him to just accept the funds and claiming different mayors earlier than him had performed so too. Giovanni Mazzacurati, head of the Consorzio till 2013, was charged with bribing politicians, reaching a plea deal earlier than dying at 87 final yr

July 10’s ceremony bought the eye of many voters who’re towards MOSE. The venture has seen large-scale protests on a number of events. 

Stefano Mazzola/Awakening/GETTY

“The engineering and the development and the supplies used are very worrying,” explains da Mosto, “however even worse than all of that’s how the entire venture has, and is being, managed.”

Cecconi blames most of the venture’s delays on “the bottleneck of paperwork.” For the reason that corruption scandal in 2014, work on the venture has develop into glacial. The Italian authorities tasked a fee with operating the consortium, a turnover which misplaced a yr of development. In 2018 the consortium’s commissioner stated MOSE was 93% accomplished, up simply 8% from the reported completion price in 2013.

“There is a massive foyer by Venetians towards this entire venture,” says Amos. “Not solely is it siphoning cash from different tasks round Italy, but it surely signifies that there’s not sufficient cash left for doing the day-to-day enterprise inside Venice. At some levels, there wasn’t even sufficient cash for rubbish disposal.”

Critics cost that MOSE is extra about politics than downside fixing, a stigma predating its development. Cecconi notes that, even within the 90s, the venture was a “political flag” for individuals who had been for or towards it. This has poisoned dialogue.

“There are two events, they do not communicate to one another. One that claims MOSE is massive enterprise, helpful solely to the those who invented it on the detriment of the residents. The opposite is the social gathering of doing, [who say] MOSE would be the last answer for the town. Each of them are flawed.”

The lagoon that saved Venice’s first settlers from invasions may now be its undoing.

Kent German/CNET

Opposed by environmental teams, Italy’s influential nationwide inexperienced social gathering and the Venice Metropolis Council (considered one of a number of bureaus associated to the venture), MOSE had been mired in political quagmire for practically 20 years — because the Consorzio Venezia Nuova was tasked with safeguarding Venice in 1984 — earlier than the primary brick was laid in 2003. The gridlock was damaged by Silvio Berlusconi who, after turning into prime minister in 2001, enacted an infrastructure regulation that enabled him to sidestep the paperwork that slows down necessary nationwide tasks. 

Amos describes MOSE as a Berlusconi “vainness venture” and says that the prime minister was conscious of the crimson flags however insisted it’s constructed “come hell or excessive water.” The venture has by no means been universally in style: As Berlusconi inaugurated development with a ceremony in 2003, environmentalists on small boats tried to disrupt the festivities. A hydrologist delivered to Venice to judge MOSE was requested in 2003 by CBS (CNET and CBS have the identical father or mother firm, ViacomCBS) whether or not he thought the scheme would work. “I do not suppose so,” he answered. “I do not suppose you are going to march ahead, not an inch.”

Even after development started in 2003, there was a major push to shelve the venture. In April 2005, after an anti-MOSE mayor got here into energy, Venice’s metropolis council ordered police to halt development, and environmentalists started protesting with renewed zest. However Berlusconi rejected the mayor’s request to pause the venture. “The final doubts have vanished,” he stated on the time. “MOSE can be made.”

Berlusconi’s workplace was reached for remark however didn’t reply.

Silvio Berlusconi (second from proper within the entrance) returns to Venice after 2019’s floods, demanding MOSE be accomplished.

Filippo Monteforte/Getty

Da Mosto says there’s greater than sufficient blame to go round. “All of the governments that got here after [Berlusconi’s] may have performed one thing to alter it,” she says. “You may change these large infrastructure tasks, or cease them or reverse them when you get new info and notice it is the flawed factor to be doing.”

The flooding downside will solely get extra pressing within the subsequent few a long time. Over 5,500 sq. kilometers of land, together with Venice, can be underwater by 2100 if local weather change is not halted, in response to a 2017 examine led by ENEA’s Antonioli. (Cecconi disputes the methodology of the examine, which checked out deserted millstone quarries throughout the Mediterranean coast to establish sea stage rise over the past millennium and extrapolate anticipated sea stage rise over the following century.) In contrast to most different coastal cities, Venice’s woes will get world consideration. However there’s nonetheless a threat that it will take too lengthy for MOSE to be confirmed an empty answer. 

“Till folks get up to the truth that MOSE is not going to unravel Venice’s downside, different choices should not going to be taken severely,” says Amos. “However to essentially have the ability to show [that MOSE isn’t going to work] will take one other 20 or 30 years, by which era it should be too late for Venice.”

Prime Minister Conte hinted that MOSE, or a part of it, might be used later this yr if it seems to be like the town can be ravaged by an aqua alta as vicious as final yr’s. “We’re all anxiously ready,” he stated, “all of us hope it is going to obtain its operate.” 

Libreria Acqua Alta’s Diane Zamda is among the many residents of Venice to have misplaced religion, particularly after the bookstore’s submersion in November. “I do not suppose MOSE can be an answer,” she sighs.

Zamda says she hopes to by no means see a flood that monstrous once more. The percentages are towards her.

Supply hyperlink

Leave a Reply