Established: 1827

Light: (1838) 10 lamps, 13" reflectors,
revolving light
Light: (1848) 10 lamps, 14" reflectors,
revolving light
Light: (1856) fourth order Fresnel lens,
revolving light

Rebuilt: 1870

Light: (1870) fourth order Fresnel lens,
revolving light, 30 seconds
Light: (1939) fourth order Fresnel lens, incandescent oil vapor, 24,000 cp, flashing white 1 second, eclipse 6.5 seconds

Fog signal: (1871) fog bell, Steven's striking apparatus, 15 seconds

Height of light above sea level: (1826) 40 feet, (1873) 63 feet

Discontinued: 1978
In 1826, Richard Jerome sold 3 acres of the 840 acre island to the U. S. Government for $90.00, and the first beacon, a 40 foot rough stone tower equipped with ten lamps with reflectors arranged on two rotating copper tables, was constructed on Plum Island. In 1867, the masonry of the dwelling and tower were found to be soft and crumbling and the structures were leaking badly so in 1869/1870 the current masonry structure was built. This 131 year old granite lighthouse marked the treacherous waters off the western point of Plum Island for many years. Originally it had a 350,000 candle power light and a range of 14 miles before it was discontinued in June of 1978 and replaced by a small beacon. The lighthouse, located at the top of a rapidly eroding bluff is in danger of being lost unless preventive action is taken to stabilize the slope. The lighthouse is one of two on Eastern Long Island on the “Doomsday” list. East End Lighthouses has made the preservation, restoration, and relighting of this historic lighthouse its priority project.

For current updates on the plans to save this lighthouse and relight it as a Federal Aid to Navigation please visit the "Plum Island Update" section of this web site.

Resolution 2007-408 adopted 4/24/07 for transfer of Plum Island Lighthouse to the Town of Southold.
 
 

 

These vintage postcards of Fort Terry and Plum Island Lighthouse are circa 1920's. They are provided to us from the collection of Dave Clemens of the Huntington Malitia and reproduced here with his permission.

 

   
  Plum Island, originally called Isle of Parmos, was sold to Samuel Wyllys by Wyandanch, the Montauk Sacham, in 1659 for “a coat, a barrel of biskitt, 100 muxes (iron drills used to make wampum beads from shells) and fish hooks”. In August of 1775 Plum Island was the scene of an amphibious landing by continental troops under General David Wooster to prevent livestock raids by the British. The Army built Fort Terry as a coastal artillery base on Plum Island in 1899 during the Spanish American War. It was also an important strategic post during World War I and World War II, protecting the entrance to Long Island Sound and New York Harbor. At its peak, more than 1000 soldiers were stationed here, some of them housed in the brick quarters still standing and visible from the southern shores of Plum Island. The parade grounds, also visible, are now patrolled by geese, but the smaller batteries, where 3 inch and 5 inch guns were in place, are still visible from the North, East and South beaches of Plum Island. The 14 inch disappearing rifles were in the larger batteries dug into the hills in the middle of the east end. The barracks and hospital buildings were utilized by the USDA as offices, shops, and animal quarters from the mid 1950’s until 1994, when a new facility made the use of the historic buildings unnecessary.