Witch Shoal Lighthouse was located about southwest of Magog. The original lighthouse was built in 1878 as a white square wooden tower on a pier. It had a fixed white dioptric light located at a height of above the high water mark and with a range of . It was rebuilt in 1900. In April 1933, it was destroyed by pressure from the ice caused by the rising level of the lake. It was rebuilt in 1960 as a small metal tower, which was swept away by spring ice in 1978. Since 1980, the mast that replaced it is left in place only from May to October each year. The tower is high with a fixed white light that has a range of and a focal plane of . The aid is owned by the Coast Guard and maintained by a private contractor.