Grassy Island Light, Navigation lighthouse in Detroit River, Michigan, United States
Grassy Island Light is a navigation lighthouse situated in the Detroit River in Michigan. The structure comprises two white wooden towers of different heights that work together as a beacon system to guide vessels through this section of the river.
The light was established in 1849 on a pile foundation and underwent major reconstruction in 1857 to better withstand the Detroit River's winter conditions. This change was necessary to protect the structure from the river's extreme forces.
The lighthouse records contain detailed accounts of multiple keepers who maintained the site, including Edward Van Natta from 1904 to 1921.
The light emits a white flash every two seconds to guide vessels through this river section. Visitors should know the beacon is best observed from boats traveling on the Detroit River.
The structure received reinforcement in 1879 with a new masonry foundation after the original wooden base showed damage from river movement. This upgrade significantly extended the lifespan of the beacon in its demanding river setting.
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