Mystery Green Floating Island Drifts Across Williston Lake, BC
TL;DR Summary
A mysterious green, tree-covered “island” that’s more like a buoyant raft has been spotted drifting on Williston Lake, BC. Local boater Rocky Avery shared video, and BC Hydro plus Sentinel-2 satellite imagery confirmed a small island-like blob about 100 km west of the W.A.C. Bennett Dam on July 21, 2026, with a later sighting in the Ospika River on August 31. The origin remains unclear, but high reservoir levels earlier this year may have freed debris from shorelines. It currently poses no dam risk, though boaters should stay alert for floating hazards.
- A Mysterious Island Has Emerged in a Canadian Lake ScienceAlert
- Peekaboo island: the floating forest confounding nature watchers in western Canada The Guardian
- Canada Has a New Forested Floating Island. Scientists Think It Used to Have Many More. nationalgeographic.com
- Mysterious vanishing island reappears on British Columbia reservoir upi.com
- How a small island in Canada appeared, vanished, and was found again BBC
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