Tongass Narrows entrance
|Height||30 feet (9.1 m)|
|Shape||Square tower with balcony and lantern on oil house|
|Markings||White tower, black lantern|
|Operator||United States Coast Guard|
|Heritage||National Register of Historic Places listed place|
|First lit||1924 (current)|
|Focal height||74 feet (23 m)|
|Lens||Fourth Order Fresnel lens|
|Range||17 nautical miles (31 km; 20 mi)|
|Characteristic||Fl W 10s.|
emergency light (Fl W 6s.) of reduced intensity when main light is extinguished.
Guard Island Lighthouse
Alaska Heritage Resources Survey
|Nearest city||Ketchikan, Alaska|
|Area||10.4 acres (4.2 ha)|
|MPS||Light Stations of the United States MPS|
|NRHP reference No.||03001378|
|Added to NRHP||January 14, 2004|
The lighthouse location was prioritized sixth in a 1901 study of 15 Alaska proposed sites. It would assist shipping along Southeast Alaska's Inside Passage, at the north end of the Tongass Narrows, "one of the more difficult passages along the route" of Klondike Gold Rush-related shipping to Juneau and to Skagway.
Construction of the Guard Island Lighthouse began in the summer of 1903 and was completed by September 1904. The 34-foot (10 m) wooden tower housed a fourth order Fresnel lens that produced a fixed white light. However, the wood used for Guard Island Light Station, as well as for several other Alaskan lighthouses, soon deteriorated in the harsh weather conditions. By the 1920s, all the lighthouses except Eldred Rock were falling apart, and in 1922, Congress authorized the reconstruction of Guard Island Light. In 1924, the dilapidated light tower was replaced with a new single-story rectangular tower of reinforced concrete. The station was automated by the Coast Guard in 1969.
The lighthouse was listed as a historic district on the National Register of Historic Places in 2004. The listing includes one contributing building, one contributing structure, and one contributing site on a 10.4-acre (4.2 ha) area.
- Rowlett, Russ. "Lighthouses of Alaska". The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 2016-06-07.
- Alaska Historic Light Station Information & Photography United States Coast Guard. Retrieved 7 June 2016
- "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
- Robert M. Weaver (June 16, 2003). "National Register of Historic Places Registration: Guard Island Lighthouse / Guard Island Light Station (AHRS Site No. KET-025)". National Park Service. and accompanying photos (historic and from 2002)
- "Historic Light Station Information and Photography: Alaska" (PDF). United States Coast Guard Historian's Office.
- Lighthouse Friends — Guard Island Lighthouse
- Rowlett, Russ. "Lighthouses of Alaska". The Lighthouse Directory. University of North Carolina at Chapel Hill.