Summary
In the summer of 2026, a mysterious tree-covered island appeared on Williston Reservoir in British Columbia, Canada. Measuring approximately 140 metres long and 70 metres wide, the landmass was initially so unusual that officials questioned whether photographs of it were genuine. Satellite imagery confirmed its existence near Finlay Bay, but the island subsequently seemed to disappear. On August 31, BC Hydro announced that it had located the island approximately 30 kilometres away, along the Ospika Arm. The mystery of its disappearance was solved: the island had drifted across the reservoir. Its precise formation remains under investigation.
Additional Notes
During July and August 2026, an extraordinary sight attracted attention on Williston Reservoir, the largest reservoir in British Columbia. Boaters had encountered what appeared to be an entire island floating on the water, complete with mature trees and established vegetation. The island was estimated to measure approximately 140 by 70 metres, covering almost one hectare. Its substantial size made the reports difficult to believe. Even BC Hydro, the utility responsible for the reservoir, initially considered whether the photographs and videos might have been artificially generated. Satellite imagery dated July 21 confirmed the island's existence west of Finlay Bay. BC Hydro received reports from local boaters on August 13, but the island subsequently vanished from its documented position. The disappearance sparked widespread curiosity. Had the enormous floating landmass broken apart, sunk, or travelled elsewhere? The answer emerged through satellite imagery and further observations. On August 31, BC Hydro confirmed that the island had moved approximately 30 kilometres northwest, reaching the shoreline of the Ospika Arm. Satellite imagery showed it there as early as August 15. The island had remained largely intact throughout its journey. Researchers believe it may have formed gradually from accumulated logs, woody debris and decomposing vegetation. Over time, plants and trees could establish themselves on this floating material, producing a surprisingly stable structure. Exceptionally high reservoir levels and strong winds may have helped release the mass from a sheltered location, allowing it to drift across the water. The precise origin and formation process have not yet been conclusively established. Although the island's disappearance has been explained, its remarkable journey illustrates how a rare natural phenomenon can briefly resemble an impossible mystery
The Location Today
The floating island was last officially confirmed along the shoreline of the Ospika Arm of Williston Reservoir, approximately 30 kilometres northwest of its original documented location near Finlay Bay. Its position may change again. BC Hydro has warned visitors not to land on or climb onto the island because its structure of logs and decomposing vegetation is unstable. The island may be observed from a safe distance by boat or drone, subject to applicable rules and conditions.
- Environment
- Forest, Lake, Island
- Time of Day
- Unknown time of day
- Evidence Level
- Investigated Case
- Visiting the Location
- Limited
- Ownership of the Location
- Unknown