.png "Global Insight")
A video going viral on Monday claimed that Pakistan's Tarbela Dam had partially collapsed, sending floodwater surging downstream. The claim is wrong — and the officials in charge have said so plainly. But something real did happen at Tarbela on November 9, and it is the second time in fifteen months that water has forced its way into the same construction project.
Here is what actually happened, what the viral video gets wrong, and why this keeps happening at one of Pakistan's flagship hydropower projects.
What actually happened on November 9
At around 10:30 in the morning, a weak section of rock gave way during excavation at the Tarbela 5th Extension Hydropower Project, known as T-5, in Haripur, Khyber Pakhtunkhwa. The collapse happened while crews were digging the project's second-bench connecting tunnel, letting water from an intake pit rush into the tunnel and the under-construction powerhouse area.
Pakistan's Water and Power Development Authority (WAPDA) declared an emergency, suspended construction, and moved every worker to safety. No one was killed, and one worker who was swept into the water was rescued. WAPDA said the intake pit had been completely drained and dewatering of the powerhouse had begun.
The authority was explicit about what was not damaged: the main tunnel, the under-construction powerhouse, the tailrace culvert and the switchyard were all intact. Haripur's deputy commissioner, Waseem Ahmed, rejected the social-media claims. "If the dam had broken, it would have caused flooding downstream," he said — and, as he spoke, the water inside the tunnel had almost completely receded. There was, officials said, no threat to any downstream population.
Why the viral claim spread
The confusion is understandable, because the incident sits exactly where a scary headline and a real event overlap. Water did surge. Workers did run. An emergency was declared. A video of churning water inside a concrete tunnel looks, at a glance, like a dam failing.
But a dam and a construction tunnel are not the same thing. Tarbela Dam itself — the embankment holding back the reservoir — was never touched. What failed was a section of rock at the construction site of an extension still being built. The Short that spread the claim even says so in its own narration: the main dam, it notes, is "absolutely fine." Its title, however, says the opposite — and on a short-video feed, the title is what most people read.
The video also claims the problem has now struck "twice in a year." The previous incident was in August 2025, about fifteen months earlier — close enough to be a pattern, but not the same year.
A project with a troubled recent history
That pattern is the real story here. In August 2025, the downstream cofferdam at the same T-5 project breached, flooding the under-construction powerhouse and halting work for months. A government inquiry in July 2026 held the contractor, the consultant and WAPDA jointly responsible, finding that the failure was caused not by flooding but by an unauthorised change of design after the contract was signed — from roller-compacted concrete to a weaker rock-fill structure — along with inadequate supervision.
The project was meant to add 1,530 megawatts to Pakistan's grid, financed with $390 million from the World Bank and $300 million from the Asian Infrastructure Investment Bank. Instead, its cost has ballooned from about Rs82 billion when approved in 2017 to roughly Rs316 billion — a rise of more than 280 percent — and completion has slipped from 2026 to 2028. Monday's collapse is the second time in fifteen months that water has interrupted work there, and construction is suspended indefinitely while the cause is investigated.
None of that makes as dramatic a headline as "dam collapses." But it is the more important story: a flagship energy project, already years late and billions over budget, has suffered two water-related failures at the same site, and the inquiry into the first blamed the very people building it. Whether the second has the same roots is the question that matters now — and it is one a viral video cannot answer.
The dam, for the record, did not break. The project built beside it is the thing in trouble.
Read also: Japan Earthquake Injures 22 in Central Japan