Wayfarrow

Fort Gratiot Light

Lighthouse · St. Clair County, Michigan

This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 7600
This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 7600 · Nuggehalli2015 / Wikimedia Commons · CC BY-SA 4.0

Fort Gratiot Light is a lighthouse in St. Clair County, Michigan. Michigan has 124 lighthouses on record at Wayfarrow, 5 of them in St. Clair County.

It was built in 1829, in the first half of the 19th century, making it the oldest of the 89 in Michigan with a recorded construction date; its light sits 82 feet above the water; the light characteristic is recorded as Fl G 6s (a green flash every 6 seconds), with a range of about 18 nautical miles; it guards Lake Huron.

Status check, 2026-11: The original 1825 tower failed, and the current tower was built in 1829 and made taller in the early 1860s; sources give its present height as anywhere from 82 to 86 ft. Fort Gratiot Light is listed on the National Register of Historic Places. It stands at 43.0063° N, 82.4225° W.

Key facts

Current structure built1829
Focal height82 ft
Light characteristicFl G 6s
Range18 nautical miles
Body of waterLake Huron
Heritage designationNational Register of Historic Places listed place
National RegisterListed
Coordinates43.00631, -82.42247

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Nearby places

Questions

Where is Fort Gratiot Light?

Fort Gratiot Light is in St. Clair County, Michigan, at 43.0063, -82.4225.

How many lighthouses are in St. Clair County?

St. Clair County, Michigan has 5 lighthouses on record at Wayfarrow.

Sources and licences

Facts marked "approximately" carry an uncertain date in the source. Text on this page is generated from the sources above; no encyclopedia prose is copied. Last updated 2026-11-05.