The Dog Island Light was a series of lighthouses located on Dog Island, a barrier island in Franklin County, Florida, at the entrance to St. George Sound and Apalachicola Bay. These lights served as critical navigational aids for shipping traffic approaching the Apalachicola River port, particularly in the 19th century.
History The first Dog Island Light was authorized by the U.S. Congress in 1837, with construction commencing in 1838. It was a 65-foot (20 m) brick tower accompanied by a keeper's house, situated on the western end of the island. This initial structure proved short-lived, as a severe hurricane in August 1842 completely destroyed both the lighthouse and the keeper's dwelling, tragically killing the keeper and his family.
A second lighthouse was constructed swiftly in 1842-1843, this time located on the eastern end of Dog Island, nearer the entrance to St. George Sound. This structure was also a brick tower. However, due to ongoing concerns about its stability and the shifting sands of the island, it was deemed unsafe by the mid-19th century.
In 1851, a third Dog Island Light was erected near the site of the second, featuring a 50-foot (15 m) brick tower fitted with a fourth-order Fresnel lens. Just months after its completion, the great hurricane of August 1851 severely damaged the new light. Despite the damage, the structure was repaired and returned to service. During the American Civil War, the light was extinguished by Confederate forces to hinder Union shipping. It was subsequently relit after the war's conclusion.
The Dog Island Light faced its final demise during the devastating hurricane of 1873, which completely destroyed the tower and keeper's house. Following this destruction, the decision was made not to rebuild the lighthouse on Dog Island due to its extreme vulnerability to storms and erosion. Instead, a replacement light, the Crooked River Lighthouse, was constructed on the mainland in 1895, approximately 6 miles (9.7 km) to the east. This new location provided a more stable and protected position for guiding ships into Apalachicola Bay. No lighthouse has stood on Dog Island since the 1873 hurricane.