DeTour Reef Light

DeTour Reef Light
Location	Lake Huron, Michigan
Coordinates	45°56′56.12″N 83°54′10.98″W
Tower
Foundation	Concrete Crib pier
Construction	Reinforced concrete and steel
Automated	1974
Height	Tower - 78 feet (24 m)
Shape	Square tower, Integral White square superstructuredecahedron lantern
Markings	White with black trim & red roof
Heritage	National Register of Historic Places listed place, Michigan state historic site
Fog signal	HORN: 2 every 60s
Racon	"D" (Delta)(– • •)
Light
First lit	1931
Focal height	74 feet (23 m)
Lens	third and one-half order Fresnel lens (1908–1978), VRB-25, fourth order Fresnel lens (1857–1870)
Range	W 16 nautical miles; 29 kilometres (18 mi), R 15 miles (24 km)
Characteristic	Fl W 10s (R sector) Red from 079.5° to 189.5°.
	DeTour Reef Light Station
	U.S. National Register of Historic Places
Nearest city	DeTour Township, Michigan
Area	0.1 acres (0.040 ha)
Architect	Office of Supt. of Lighthouses
Architectural style	Classical Revival or Art Deco
MPS	Light Stations of the United States MPS
NRHP reference No.	05000151
Added to NRHP	March 15, 2005

The DeTour Reef Light is a non-profit-operated lighthouse marking the southern entrance of the DeTour Passage between the eastern end of Michigan's Upper Peninsula and Drummond Island. The light is an automated active aid to navigation. It marks the northern end of Lake Huron. The passage is used by almost all of the Great Lakes commercial freighter traffic moving to and from Lake Superior, with approximately 5,000 vessel movements annually. It is said to be "the gateway to Lake Superior." In addition, many recreational boaters use the passage. The Light is located in Lake Huron, three miles (5 km) south of the nearest town, DeTour Village, Michigan.

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