What dam burst in Italy in 1963?

The Vajont Dam as seen from the village of Longarone in 2005, showing roughly the top 60–70 m (200–230 ft) of concrete. The wall of water that overtopped the dam by 250 m (820 ft) and destroyed this village and all nearby villages on 9 October 1963 would have obscured virtually all of the blue sky in this photo.



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A wave of water washed above the lake to Casso and Erto, communities above the reservoir, where the air blast and water destroyed buildings and caused at least 158 fatalities. Five downstream towns were destroyed including Longarone, Pirago, Rivalta, Villanova, and Fae.

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On October 9, 1963, at 10:39 pm 260 million cubic meters of rock broke off from the top of Monte Toc, on the border between Veneto and Friuli Venezia Giulia. It fell into the reservoir of the Vajont Dam, producing an enormous wave of at least 50 million cubic meters of water.

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The worst dam failure in the United States was the Johnstown flood of 1889. The failure of the South Fork Dam, which affected Johnstown, is currently regarded as the worst dam failure in U.S. history.

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Banqiao Dam Failure (China, 1975) The Banqiao Dam failure is considered the deadliest dam disaster in history. Heavy rainfall caused the dam to collapse, leading to a catastrophic flood. The estimated death toll ranges from 26,000 to 171,000, with millions of people affected.

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National statistics show that overtopping due to inadequate spillway design, debris blockage of spillways, or settlement of the dam crest account for approximately 34% of all U.S. dam failures. 2. Foundation Defects, including settlement and slope instability, cause about 30% of all dam failures. 3.

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The falling rock mass acted like a huge piston, pushing the water of the lake against Casso and Erto, two small villages on the slope in front of the slope that failed, and then over an artificial dam 210m high. A large wave overtopped the dam and reached the town of Longarone at 10:46 p.m., destroying it.

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On 1st December 1923, the failure of the Gleno dam caused a huge disaster, which devastated the Scalve valley in the province of Bergamo in Lombardy (northern Italy).

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In 1975 the failure of the Banqiao Reservoir Dam and other dams in Henan Province, China caused more casualties than any other dam failure in history. The disaster killed an estimated 171,000 people and 11 million people lost their homes.

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After several days of heavy rainfall in May 1889, the South Fork Dam 14 miles upstream of Johnstown in Pennsylvania failed catastrophically. The resulting flood of 1889 killed more than 2,200 people and caused US$17m damage. It is still the worst dam disaster in US history.

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Banqiao Dam Failure (China, 1975) The Banqiao Dam failure is considered the deadliest dam disaster in history. Heavy rainfall caused the dam to collapse, leading to a catastrophic flood. The estimated death toll ranges from 26,000 to 171,000, with millions of people affected.

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The failure of the South Fork Dam, which affected Johnstown, is currently regarded as the worst dam failure in U.S. history. About eight miles to the east of Johnstown, Pennsylvania, was where the South Fork Dam, a rock and earthen dam, was built.

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A dam is defined as a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply. The oldest dam in America is Old Oaken Bucket Pond Dam. It was built in 1640 and is located in Scituate, Massachusetts.

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The largest hydroelectric plant in the United States is at Grand Coulee Dam. Its three powerplants have a capacity of 6,809 MW, and it generates, on average, about 21 billion KWh, while Hoover Dam's powerplant has a capacity of 2,074 MW and generates approximately 4 billion KWh a year.

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Downriver towns and major cities would see the most damage, in the event of the dam's physical collapse. Water flows would engulf many towns and growing cities around Mohave county, including Laughlin, Nevada; Needles, California; Lake Havasu, Arizona; and even as far south as Yuma, Arizona, and San Luis Rey, Colorado.

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