We’ve seen surfers ride standing river waves. We’ve seen bodyboarders huck themselves down dam spillways. Jamie O’Brien has built practically an entire career around Jackass-inspired aquatic hijinks, from his early days on YouTube surfing Oahu spillways.
But this?
Absolutely not.
Footage from Pakistan’s colossal Tarbela Dam shows its spillway gates opening and an almost unfathomable amount of water roaring downhill. When the torrent reaches a hydraulic structure near the bottom, it rears upward into what looks like a gigantic standing wave.
The scale is difficult to comprehend.
Tarbela sits on the Indus River northwest of Islamabad and ranks among the world’s largest earth-and-rock-fill dams. It stands roughly 147 meters—or 482 feet—above the riverbed, while the dam itself contains approximately 142 million cubic meters of material.
And Tarbela can move some serious water.
During the first operation of its auxiliary spillway in the 2026 flood season, Pakistan’s Water and Power Development Authority reported 242,600 cusecs flowing downstream.
That’s roughly 1.8 million gallons every second. The operation lasted from 11 a.m. until 2:30 p.m., although that official event cannot be definitively matched to the undated viral footage.
When it’s full, Tarbela’s service spillway was designed for roughly 615,000 cusecs, while the auxiliary spillway can handle around 795,000.
Related: Massive Dam Bursts into World’s Largest Standing Wave (Video)
Could anyone surf the monster at the bottom?
Technically, the feature resembles a standing wave: fast-moving water encounters slower water or an obstruction and continuously piles upward in essentially the same location. But calling Tarbela the world’s largest standing wave is more fun than scientifically established; apparently the folks in the white jackets don’t measure such feats.
So, we’re calling it: Biggest standing wave in the world. Boom. Official.
Surfers have tackled dam-generated waves before. JOB and others have ridden everything from flooded rivermouths to spillways, while Australian lunatics have bodyboarded down Clarrie Hall Dam.
Tarbela looks like an entirely different animal.
Some waves are meant to be ridden; some are very much not.
This one is probably best admired from very, very far away.
Related: Boat Hangs Over 130Ft Dam in Harrowing Footage (Video)
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