California Lighthouses


Trinidad Head Lighthouse, California

Trinidad Head Light Station

Trinidad Memorial Lighthouse shown in photo commemorates local fishermen who have been lost at sea. This recognized landmark of Humboldt County isn't a true functioning lighthouse but also honors the historic Trinidad Head Lighthouse on the seaward side of Trinidad Head.

Located in Trinidad Harbor in Humboldt County, the original Trinidad Head Lighthouse was established in 1866 and was First lit in 1871. The light is operational, with automation of the facility beginning in 1974. When built, foundation materials included stone, and the construction materials included brick. The shape of the tower is considered pyramidal.

The lighthouse is separate and the tower height in feet measures 25. The original optic was a Fourth Order Fresnel lens installed in 1871.

The current optic installed in 1947 is 375 mm, and height of the focal plane is 196. The lighthouse includes a modern tower, shaped square
and the tower height in feet measures 25. The height of the focal plane is 196. There is an existing sound signal building constructed in 1900 using frame construction. Its architectural style is Contemporary.
The type of fog signal is a horn (originally a bell).

There are Keepers Quarters at this lighthouse. (Original Keepers quarters raised in the 1960s.) The modern quarters were constructed in 1969. The lighthouse keepers quarters has two stories and its architectural style is Modern Triplex.

A modern fog signal is located outside the fog signal building -- the original bell is on display in the replica tower in the town of Trinidad.

The lighthouse is still used as an active aid to navigation and Coast Guard housing.

Owner is the U.S. Coast Guard
The lighthouse is open to the public.

It's listed on the National Register as Reference #91001098
Name of Listing: Trinidad Head Light Stations

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