Plum Island Light
|Lighthouse on Plum Island|
|Location||Plum Island (New York)|
|Year first lit||1827|
|Construction||second light on granite house (1869)
metal tower (1978)
|Height||50 feet (15 m) from sea level|
|Original lens||10 whale oil lamps (1827)
Sixth-order fresnel (1856)
Fourth-order fresnel (1897)
Automated flash (1978)
|Range||5 nautical miles (9.3 km)|
|Characteristic||2.5 second White flash|
|ARLHS number||USA-606 |
|USCG number||1-21090 |
Plum Island Light Station
|NRHP Reference #||11000014|
|Added to NRHP||February 11, 2011|
Plum Island Light, also known as Plum Gut Light, is located on the western end of Plum Island, which lies east of Orient Point which in turn is at the end of the North Fork of Long Island in the US state of New York. An historic granite lighthouse originally built in 1869 sits at the site, but no longer serves as an active aid to navigation. It was listed on the National Register of Historic Places in 2011. A short distance northwest of the granite lighthouse building is a 14 feet (4.3 m) metal tower that holds the automated light that has served as an aid to navigation since the earlier light was decommissioned in 1978.
In 1826 the west end of Plum Island was purchased from Richard Jerome for $90 for the purpose of building a lighthouse. The following year a 35 feet (11 m) high stone tower had been constructed to support the first light. That first light consisted of ten whale oil lamps with reflectors. The light helped navigation near the entrance to Long Island Sound, especially through the "Plum Gut" channel between Orient Point and Plum Island. In 1856 the original lamps and reflectors were replaced by a sixth-order Fresnel lens.
By the late 1860s the lighthouse was falling into disrepair. A new 55 feet (17 m) tall granite lighthouse building was constructed and in service by 1869. The structure is of the same design as lighthouses at Sheffield Island in Norwalk, Connecticut; Morgan Point in Noank, Connecticut; Great Captain Island in Greenwich, Connecticut, Old Field Point in Old Field, New York; and Block Island North on Block Island Rhode Island. The sixth order lens from the original lighthouse had been moved to the new building, then it was changed to a newer fourth-order lens in 1897.
In 1879 Fort Terry was built on Plum Island. The relations between lighthouse keepers and army personnel remained congenial for many years, and the keepers could usually purchase food and supplies at the Fort commissary. But in 1916 an order came down and the keeper at Plum Island Light was informed that purchasing supplies at Fort Terry was no longer allowed. The rule forced William Chapel, the keeper at the time, to sail over a mile to Orient, or 12 miles to New London to purchase supplies. Eventually the United States Lighthouse Service was able to persuade the Army that lighthouse keepers should once again be allowed to purchase supplies at army commissaries.
Starting in 1939 the Lighthouse Service duties were taken over by the United States Coast Guard. Coast Guard employed keepers were removed from Plum Island in 1978 when the light was automated on a structure built to the side of the 1869 lighthouse.
Starting in 2000 the East End Lighthouses group (distinct from the Seaport Museum organization) was formed and has been working since that time with various government agencies to refurbish, and to hopefully eventually relight the Plum Island light as an active aid to navigation. On April 24, 2007 a resolution was passed by the Town of Southold that will transfer ownership of the lighthouse to the town.
The Plum Island Lighthouse, like all of Plum Island, is not open for public visits. The light may be seen from the water, but landing on the island is restricted to persons authorized by the United States Department of Homeland Security (usually those visiting the Plum Island Animal Disease Center).
The Archives Center at the Smithsonian National Museum of American History has a collection (#1055) of souvenir postcards of lighthouses and has digitized 272 of these and made them available online. These include postcards of Plum Island Light  with links to customized nautical charts provided by National Oceanographic and Atmospheric Administration.
- ARLHS World List of Lights
- Light List, Volume I, Atlantic Coast, St. Croix River, Maine to Shrewsbury River, New Jersey (PDF). Light List. United States Coast Guard.
- "National Register of Historic Places listings for February 18, 2011". National Park Service. February 18, 2011.
- "Historic Light Station Information and Photography: New York". United States Coast Guard Historian's Office. Retrieved 2008-09-08.
- "Plum Island Lighthouse, New York at Lighthousefriends.com". LighthouseFriends.com. Retrieved 2008-06-03.
- "Great Captain Island Lighthouse, Connecticut at Lighthousefriends.com". LighthouseFriends.com. Retrieved 2008-06-02.
- "Plum Island Update". East End Lighthouses. Retrieved 2008-06-03.
- Smithsonian lighthouse postcards
- "East End Seatport Museum and Marine Foundation". Retrieved 2008-06-03.
- "Plum Island (Plum Gut) Lighthouse - Plum Island, Long Island, New York". Retrieved 2008-06-03.
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