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Gull Rock Light

Location: west of Manitou Island / Lake Superior near Copper Harbor, MI

Local Marine Forecast.

There are no active watches, warnings or advisories 

About Gull Rock Light


The location of the light is west of Manitou Island / Lake Superior. The nearest city is Copper Harbor, MI. The station was first established in 1867. The current lighthouse was first lit in 1867.

The tower has a flashing white light at a focal plane height of 50 ft above mean high water. The light has a nominal range of 8 nautical miles. The tower height is 46 ft. The light has a period of 5 seconds.

Open to the Public?: No    Active?: Yes

Identification number: 7-15165 (U.S.)

Light Pattern:
2 white flashes every 5 seconds
0.4s fl 0.6s ec.
0.4s fl 3.6s ec

A 'flashing' light is a light in which the total duration of light in a period is shorter than the total duration of darkness and the appearances of light (flashes) are usually of equal duration. So in the 5 second period, the light is on for less than 2.5 then off for more than 2.5.

Gull Rock Light was listed on the National Register of Historic Places on July 19, 1984, reference number 84001751.

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