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Mysterious island appears and disappears in British Columbia reservoir

  • Locals spotted a massive, tree-covered island in British Columbia's Williston Reservoir earlier this month, covering over 105,000 square feet and appearing to emerge mysteriously from open water.
  • Heavy mountain snowpack and steady rain brought the reservoir to full capacity for the first time in 14 years, lifting accumulated debris from the shore as water rose into previously dry areas.
  • Satellite images from July 21 captured the patch measuring about 140 meters long and 70 meters wide, nearly 9,800 square meters close to the size of two NFL football fields.
  • Although the object vanished from satellite view by August 5, B.C. Hydro spokesman Bob Gammer said it likely returned to a sheltered shoreline area; a resident spotted it again on Sunday, Aug. 30, near Peace Reach.
  • Officials do not expect the mass to affect energy operations, though floating debris poses navigation hazards for boaters. B.C. Hydro continues annual aerial surveys to identify and remove such material from the waterway.
Insights by Ground AI

39 Articles

Lean Right

As residents publish the pictures of a floating island in a Canadian reservoir, many suspect a video generated with AI. However, the island was real – and causes a stir.

·Berlin, Germany
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Lean Right

At first, the authorities thought it was simply a trick of artificial intelligence, until they checked the satellite images of northern British Columbia. The mystery intensified and, on Monday, the island was located.

·Buenos Aires, Argentina
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In a reservoir in British Columbia, a boater encounters a previously undiscovered forested island. Shortly thereafter, it has disappeared and later reappears – 32 kilometers away. What does it have to do with it?

·Munich, Germany
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Lean Left

A new floating island appeared on the surface of Canada's Williston Lake in late July. Local resident Rocky Avery captured it on video and its existence was confirmed by satellite imagery. However, the island disappeared in the following days, but Avery discovered it again in late August. In a different location.

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  • 37% of the sources lean Left, 37% of the sources lean Right
37% Right

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Mashable broke the news in New York, United States on Monday, August 31, 2026.
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