Fort Gratiot Light
| Location | Omar and Garfield Sts., Port Huron, Michigan |
|---|---|
| Coordinates | 43°0′22.7″N 82°25′20.9″W / 43.006306°N 82.422472°W |
| Tower | |
| Constructed | 1825 |
| Foundation | Dressed stone and timber |
| Construction | Brick |
| Automated | 1933 |
| Height | 85 feet (26 m) |
| Shape | Frustum of a cone attached to workroom |
| Markings | White |
| Heritage | National Register of Historic Places listed place, Michigan state historic site |
| Fog signal | Station will give available information on fog conditions in upper river by radiotelephone when requested, (156.80 MHz). Standby light of reduced intensity lighted throughout 24 hours. |
| Light | |
| First lit | 1825 |
| Focal height | 82 feet (25 m) |
| Lens | Fourth-order Fresnel lens (original), DCB-224 Carlisle & Finch Aerobeacon (current) |
| Range | 18 nautical miles (33 km; 21 mi) |
| Characteristic | Fl green 6 seconds |
Fort Gratiot Lighthouse | |
Undated USCG image | |
| Area | less than one acre |
| Architect | Lyon, Lucius; Moors, J. |
| NRHP reference No. | 76001975 |
| Added to NRHP | July 30, 1976 |
Fort Gratiot Light /ˈɡræʃɪt/, the first lighthouse in the state of Michigan, was constructed north of Fort Gratiot in 1825 by Lucius Lyon, who later became one of Michigan's first U.S. Senators.
The Fort Gratiot Light marks the entrance to the St. Clair River from Lake Huron (going south) in the southern portion of Michigan's Thumb. The light is still active, but the federal government transferred ownership to St. Clair County Parks and Recreation (St. Clair County PARC) in 2010. In 2012, St. Clair County PARC partnered with the Port Huron Museums to provide tours and lighthouse tower climbs to the public, which continue to be offered on a seasonal basis for a small fee. It is the oldest surviving lighthouse in Michigan. There is also a public beach and park on the property, known as Lighthouse Beach.
It is across the river from Point Edward Front Range Light.