The lighthouses listed here are not listed currently on the Lighthouse Digest Doomsday List , but they appear to be threatened or endangered. This list has no official standing whatsoever. The symbols preceding the entries are my highly unofficial estimates of the degree of danger to the lighthouse. The lighthouse is in danger of actual destruction within ten years.
Action is needed now to prevent loss of the lighthouse later.
The lighthouse is in imminent danger of destruction. Immediate action is needed to save the structure. The lighthouse could be lost in less than a year . The lighthouse is in ruins. A significant portion of the historic structure has already been lost, and restoration would require reconstruction.