Canada Floating Island Mystery: Massive Island Spotted Before Vanishing From Williston Reservoir (Video)

A massive tree-covered floating island mysteriously appeared in British Columbia's Williston Reservoir in Canada before disappearing from sight just weeks later. The unusual landmass was spotted last month in the remote reservoir north of Mackenzie, prompting a local boater to photograph it and share the sighting with resident Rocky Avery.

Avery later posted about the floating island on Facebook, where the post attracted more than 1,40,000 views. Satellite imagery subsequently confirmed that the unusual object was real and floating in the main body of the reservoir before it disappeared from images taken weeks later. Lioness on Loose in Indiana: 300-Pound Big Cat and Cub Reportedly Spotted in US, Search On.

Massive Island Spotted Before Vanishing From Canada's Williston Reservoir 

Local Boater Spots Unusual Floating Landmass

The floating island was first photographed by a local boater, who shared the video with Avery. “It was a pretty amazing sight to see, never seen anything like that in my 40 years in this country," Avery was quoted as saying by CBC.

“There was a big fishing derby coming up, so I wanted to make sure everybody was aware of what was going on. And I wanted BC Hydro to know too that it was out there, just in case it was floating down their way.” The unusual discovery came ahead of a fishing derby, prompting Avery to alert people in the area as well as BC Hydro. Donald Trump Renames Lake Ontario As Lake America: What the Executive Order Says.

BC Hydro Initially Questioned The Sighting

BC Hydro, a government-owned utility company that provides hydroelectric power to most of British Columbia, was informed about the island. The company initially questioned whether the floating landmass was actually real.

“It's certainly something we've not heard of before. And with not very many people reporting it, it was difficult to locate," said company spokesman Bob Gammer. Satellite imagery dated July 21 subsequently confirmed the sighting. The island was located in the main body of the reservoir west of Finlay Bay, about 60 miles west of the WAC Bennett Dam.

Island Nearly The Size Of Two NFL Football Fields

The floating landmass was estimated to be about 230 feet wide and 460 feet long. It covered roughly 1,05,000 square feet, making it nearly the size of two NFL football fields.

The island appeared to contain trees and other vegetation, giving it the appearance of a small, established landmass despite floating in the reservoir. However, satellite imagery showed that the unusual island did not remain in place for long. By August 5, it had vanished from satellite imagery.

The unusual sighting generated considerable interest online, with social media users offering different explanations for how the floating island may have formed. One user suggested that the trees could be connected through an extensive root system.

"Those aspen poplars can form large clumps of clones, or offshoot all related to a single mother tree. So all the roots can be interconnected and actually connecting each tree with the next," said one user while another added: "I'm moving there next week if I can find it. Got to escape this heat." Another theory suggested that the apparent island could have been a mass of floating logs that had accumulated vegetation over time.

What Happened To The Island?

The island's disappearance from satellite imagery by August 5 has added another element to the mystery. The available information confirms that the landmass was visible in the reservoir and was independently verified through satellite imagery. However, its precise origin and the reason for its disappearance remain unclear from the information available.

Theories circulating online include interconnected tree roots, accumulated logs and vegetation growing over floating debris. The Williston Reservoir is a large man-made lake in British Columbia, and its remote location means unusual floating objects may not always be immediately detected. For now, the appearance and disappearance of the tree-covered landmass remains an unusual sighting that has drawn significant attention online.

(The above story first appeared on LatestLY on Sep 01, 2026 12:18 PM IST. For more news and updates on politics, world, sports, entertainment and lifestyle, log on to our website latestly.com).