A protective bund at the under-construction Tarbela 5th Extension hydropower project in Pakistan’s Khyber Pakhtunkhwa province collapsed on Monday, releasing a sudden surge of water from the dam’s reservoir into the tunnel works.
The failure occurred at the protective embankment shielding Tunnel 5 of the T-5 extension, according to Al Jazeera, allowing a large volume of reservoir water to pour through the site.
One worker swept away
Hiru News, also citing Al Jazeera, reported that one worker was carried off by the water and was subsequently rescued. Pakistani and foreign staff at the site were evacuated to safety.
No deaths have been reported.
Pakistani outlets including Dawn and The Express Tribune report that construction on the extension has been suspended indefinitely and that a high-level inquiry will examine whether a structural weakness or a technical fault caused the bund to fail. Those outlets are not among the verified newsrooms this desk cites in full, and their reporting is noted here as context rather than relied on for the core account.
What the project is
The Tarbela dam, on the Indus in Khyber Pakhtunkhwa, is one of the largest earth-filled dams in the world and a central component of Pakistan’s power generation. The 5th Extension Project is an expansion intended to add generating capacity through a new tunnel; the works affected on Monday were part of that extension, not the main dam structure itself.
The distinction matters, and it is the point most easily lost in a headline: this was the failure of a temporary protective embankment at a construction site, not a breach of the Tarbela dam itself.
Not reported
Neither verified source gives the volume of water released, the extent of damage to the tunnel or to installed equipment, the nationality or condition of the rescued worker, or how many people were on site at the time. Neither states when work might resume, what the financial cost of the failure is, or whether communities downstream were affected or warned. No comment from WAPDA, Pakistan’s water and power development authority, or from the project contractor appears in either filing.
