Tree Point Light

Tree Point Light

Location	Revillagigedo Channel, Alaska
Coordinates	54°48′10″N 130°56′02″W
Tower
Constructed	1903
Foundation	Concrete
Construction	Concrete
Automated	1969
Height	58 ft (86 ft above sea level)
Shape	White art deco Square tower attached to oil house
Power source	solar power
Heritage	National Register of Historic Places listed place
Light
First lit	1935
Lens	Fourth order Fresnel lens
Range	9 nm
Characteristic	Flashing white light every 6 seconds, Obscured from 158° to 318°.

The Tree Point Light is a lighthouse located adjacent to Revillagigedo Channel in southeastern Alaska, USA. It is located near the southernmost point of mainland Alaska.

History

The Lighthouse Board approved the construction of the Tree Point Lighthouse on April 24, 1903, and just over a year later the light was activated on April 30, 1904. The lighthouse was the first, and only lighthouse, to be built on mainland Alaska. In the early 1930s, the Bureau of Lighthouses authorized reconstruction of the station with reinforced concrete. Work began in 1933 and was completed in 1935. The 1935 lighthouse was equipped with a fourth-order Fresnel lens, which is now displayed at the Tongass Historical Museum in Ketchikan, Alaska. In 1969 it was automated. The Fresnel lens was replaced with a lens mounted outside the lantern room. In the summer of 1977 the lens on the gallery was replaced with a modern, solar-powered VRB-25 Vega lens placed back inside the lantern room.

Original 1904 Lighthouse – USCG archive photo

External links

• United States Coast Guard Lighthouses of Alaska
• Lighthouse Friends — Tree Point Lighthouse
• Lighthouse Digest — Alaska