St. Clair Flats Front and Rear Range Light
St. Clair Flats Front and Rear Range Light, Twin lighthouses in St. Clair County, United States.
The Front and Rear Range Light structures stand in Lake St. Clair, guiding ships through the channel near the southern tip of Harsens Island.
Constructed between 1855 and 1859, these navigation aids marked a freshwater delta passage that connected major shipping routes through the Great Lakes.
The lighthouses represent the evolution of maritime navigation systems in the Great Lakes region during the nineteenth century industrial expansion period.
The front light received reinforcement with a limestone-filled steel cell in 1990, followed by a permanent seawall installation in 1996.
The rear light structure includes the remaining components of a former two-story keeper's residence that was partially dismantled during the 1930s.
Location: St. Clair County
GPS coordinates: 42.53750,-82.69472
Latest update: September 23, 2025 14:24
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