Floating forest island appears in British Columbia reservoir then vanishes: What’s behind the mystery?

Satellite imagery confirmed the island's presence on July 21, measuring about 70 by 140 meters

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Published August 31, 2026
Floating forest island appears in British Columbia reservoir then vanishes: What’s behind the mystery?

A mysterious floating forest-based island has been making rounds on the internet, leaving the netizens and scientific community baffled.

What makes this island mysteriously much-hyped is its sudden appearance in the Williston Reservoir in northern British Columbia reservoir. And it did not stay longer. In fact it vanished quickly.

As per reports, a floating forested island roughly the size of two football fields broke away from the shoreline in northern British Columbia, drifting into open water on the Williston Reservoir before vanishing from satellite tracking.

Soon after its appearance, it captured the attention of B.C. Hydro and local residents after it was seen bobbing in a large man-made lake north of Mackenzie.

Rocky Avery received video and photographs of the floating island from a local boater and shared them on social media, where they quickly gained widespread attention.

"It was a pretty amazing sight to see, never seen anything like that in my 40 years in this country," Avery noted.

According to B.C. Hydro, satellite imagery confirmed the island's presence on July 21, measuring about 70 by 140 meters.

“The most recent satellite images from two weeks ago showed no sign of the floating island. We plan to acquire a few more images just to be sure, but our current assessment is that the island is not a concern for our operations,” B.C. Hydro spokesperson Bob Gammer said.

B.C. Hydro explained that record-high water levels from heavy snow and rain lifted a mat of vegetation and driftwood from the shoreline, with winds pushing it into open water before it vanished by August 5.

The footage also took the internet by storm and sparked speculations. One user wrote, “An island disappearing is one thing but it can’t just appear from underwater with mature, healthy trees on it.”

“This is the kind of "raft" scientists mean when they say animals floated across oceans, btw. They're huge mats of floating vegetation, and are responsible for the spread of monkeys, iguanas, and many, many other animal and plants species around the world,” Another one commented.

Aqsa Qaddus Tahir
Aqsa Qaddus Tahir is a reporter dedicated to science coverage, exploring breakthroughs, emerging research, and innovation. Her work centres on making scientific developments understandable and relevant, presenting well-researched stories that connect complex ideas with everyday life in a clear, engaging, and informative manner.
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