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Rock Harbor Lighthouse

R🇨🇦Michigan's Western Upper Peninsula, CAInactive

Constructed in 1855, this lighthouse stands on Isle Royale National Park in Michigan's Western Upper Peninsula. The structure reaches a height of 15 meters, with its focal plane at the same elevation. It was designed to emit a red light. Although operational status is listed as false, its historical significance is recognized.

Why it matters: The Rock Harbor Lighthouse is listed on the National Register of Historic Places.

Background
The Rock Harbor Lighthouse is a light station located in Rock Harbor on Isle Royale National Park, Michigan. It was listed on the National Register of Historic Places in 1977.
Characteristic Signature
R
Light Color
Red
Flash Count
1 flash
Focal Height
15m
Year Built
1855
Heritage Status
National Register of Historic Places listed place
Tower Height
15m
City
Michigan's Western Upper Peninsula
Country
🇨🇦CA
Latitude
48.0898°
Longitude
-88.5794°
Flag
Type
Name
Dist.
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Which ports and harbors does Rock Harbor Lighthouse guide vessels into?+
Rock Harbor Lighthouse assists vessels approaching 4 nearby ports. The closest is Fort William at 32.1 NM to the NW. Other ports served include Port Arthur (32.1 NM NW), Thunder Bay (32.1 NM NW), Grand Portage (45.3 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Rock Harbor Lighthouse still active and maintained?+
Rock Harbor Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
How can I track vessels near Rock Harbor Lighthouse?+
You can track vessels near Rock Harbor Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.