A floating island approximately 500 feet long was reported in the Williston Lake reservoir in British Columbia. According to Bob Gammer, a spokesman for the British Columbia Hydro and Power Authority (BC Hydro), the mass was first documented last month before moving 20 miles from its initial location. The utility, which operates the reservoir and a nearby dam, had not previously recorded such a phenomenon in the area.
BC Hydro officials first learned of the island after a member of the media saw a Facebook post where a boater shared video and photographs of the forested mass. Gammer stated that internal discussions with staff and long-term residents of the area indicated no prior sightings of the island. Initially, Gammer questioned the authenticity of the social media reports before confirming the object’s existence.
The utility’s current theory is that the island formed over several years from compressed woody debris and logs in a sheltered bay. Gammer explained that as the logs decomposed, moss and seeds took root, eventually growing into trees that knitted the debris together. The island likely became dislodged from the shoreline when reservoir levels rose during the spring snowmelt, allowing wind to push it into open water.
The scale of the phenomenon involves a single 500-foot-long mass that traveled 20 miles across a managed reservoir. For local residents and visitors, the immediate change is a new navigational hazard and a safety restriction regarding physical contact with the mass. BC Hydro has not reported any immediate impact on the operations of the nearby dam or electricity generation, but the utility continues to monitor the island's movement within the reservoir.
What happens next remains dependent on environmental conditions such as wind and water levels. BC Hydro has not provided a specific timeline for how long the island is expected to remain intact or whether it will eventually drift back to a shoreline or toward the dam. No dates for further inspections or formal studies were reported. The utility continues to advise caution for anyone operating craft on the reservoir near the moving island.