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Flood at Stava Dam
Flood at Stava Dam
Flood at Stava Dam
Vital statistics
Series Seconds from Disaster
Title Flood at Stava Dam
Airdate October 12, 2004
Disaster Stava Dam Collapse
Date July 19, 1985
Kind Collapse
Nature Poor Maintenance and Management, Water Overload
Fatalities 268

Flood at Stava Dam is the 11th episode of Seconds from Disaster tries to explain how did two dams collapsed and why so many died.

Plot Edit

Two dams above the village of Stava in northern Italy collapse, causing an ensuing mudslide and flood down the Stava River valley that kills 268 people in the village below.

CauseEdit

An investigation into the disaster found that the dams were poorly maintained and the margin of safe operation
  • The aftermath of the dam-break
  • An aerial photo of the dam and its nearby villages before and after the dam-break
was very small.

A pipe in the upper dam used to drain water had begun to sag under the weight of sediments, making the dam's drainage less effective. Meanwhile, water continued to be pumped into the reservoir behind the dam, which, coupled with the less efficient drainage, meant the pressure on the bank of the upper dam began to increase. Following the path of least resistance, water began penetrating the bank, causing the soil within to liquefy and weaken the bank until it failed. The water and tailings from the upper dam then flowed into the lower dam, which, under the immense pressure produced, failed thirty seconds later.

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