The sewer alligator is a colloquial term for
alligator
An alligator, or colloquially gator, is a large reptile in the genus ''Alligator'' of the Family (biology), family Alligatoridae in the Order (biology), order Crocodilia. The two Extant taxon, extant species are the American alligator (''A. mis ...
s that live in sewers outside alligators' native range. Some cities in which sewer alligators have supposedly been found are
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
and
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
. Accounts of fully grown sewer alligators are unproven, but small alligators are sometimes rescued from sewers.
Stories date back to the late 1920s and early 1930s; in most instances they are part of
contemporary legend.
''The New York Times'' reports the city rescues 100 alligators per year, some directly from homes where they are kept as illegal pets (which can be legally ordered online in other states and are legal to mail when small), and some from outside (where they can attract considerable attention) though mostly above-ground.
Though escapees and former pets may survive for a short time in New York sewers, longer-term survival is not possible due to the low temperatures and the bacteria in human feces.
Sewer maintenance crews insist there is no underground population of alligators in sewers.
Legend
The legend of
alligators inhabiting the
sewer system of
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
is a widely circulated
urban myth. It suggests that alligators navigate the city's sewers, preying on rats and other refuse, and posing a threat to
sewer workers, who are said to carry firearms for protection. According to the lore, these alligators are often described as large and vicious, with some attributing a lack of pigmentation to their purported status as "
albinos." The urban myth has permeated popular culture, featuring in various forms of media including books, television shows, and movies. It has also inspired hoaxes and artistic projects, and is commemorated in the city with a quasi-holiday known as Alligator in the Sewer Day,
celebrated on February 9.
Following reports of sewer alligators in the 1930s, the story built up over the decades and became more of a contemporary legend. It is questionable how accurate the original stories are, and some have even suggested they are fictions created by
Teddy May, who was the Commissioner of Sewers at the time. Interviews with him were the basis of the first published accounts of sewer alligators. In their honor, February 9 is Alligators in the Sewers Day in Manhattan.
A similar story from 1851 involves feral pigs in the sewers of
Hampstead
Hampstead () is an area in London, England, which lies northwest of Charing Cross, located mainly in the London Borough of Camden, with a small part in the London Borough of Barnet. It borders Highgate and Golders Green to the north, Belsiz ...
, London.
Louisiana or Florida to New York City
As late as the middle of the 20th century, souvenir shops in
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...
sold live baby alligators (in small fish tanks) as novelty souvenirs. Tourists from New York City would buy a baby alligator and try to raise it as a pet. When the alligator grew too large for comfort, the family would proceed to flush the reptile down the toilet.
The most common story is that the alligators survive and reside within the sewer and reproduce, feeding on rats and garbage, growing to huge sizes and striking fear into sewer workers. In
Robert Daley's book ''The World Beneath the City'' (1959) he comments that one night a sewer worker in New York City was shocked to find a large albino alligator swimming toward him. Weeks of hunting followed.
The ''
Journal of American Folklore
The ''Journal of American Folklore'' is a peer-reviewed academic journal published by the American Folklore Society. The journal has been published since the society's founding in 1888. Since 2003, this has been published at the University of I ...
'' has this to say on the subject:
An additional reference to the sewer alligator exists in
Thomas Pynchon
Thomas Ruggles Pynchon Jr. ( , ; born May 8, 1937) is an American novelist noted for his dense and complex novels. His fiction and non-fiction writings encompass a vast array of subject matter, Literary genre, genres and Theme (narrative), th ...
's first novel, ''
V.'' It fictionalizes the account, stating
Macy's
Macy's is an American department store chain founded in 1858 by Rowland Hussey Macy. The first store was located in Manhattan on Sixth Avenue between 13th and 14th Streets, south of the present-day flagship store at Herald Square on West 34 ...
was selling them for a time for 50 cents. Eventually the children became bored with the pets, setting them loose in the streets as well as flushing them into the sewers. Rather than poison, shotguns were used as the remedy. Benny Profane, one of the main characters in the book, continues to hunt them as a full-time job until the population is reduced.
A 1973 children's book, ''The Great Escape: Or, The Sewer Story'' by Peter Lippman anthropomorphizes these alligators and has them dress up in disguise as humans and charter an airplane to fly them home to the Florida swamps.
Versions including albinos and mutants

Some claims go further to suggest that, after the alligator was disposed of at such a young age, it would live the majority of its life in an environment not exposed to sunlight, and thus it would apparently in time lose its eyesight and the pigment in its hide and that the reptile would grow to be blind and completely
albino
Albinism is the congenital absence of melanin in an animal or plant resulting in white hair, feathers, scales and skin and reddish pink or blue eyes. Individuals with the condition are referred to as albinos.
Varied use and interpretation of ...
(pure white in color with red or pink eyes). Another reason why an albino alligator would retreat to an underground sewer is its vulnerability to the sun in the wild; as there is no dark pigment in the creature's skin, it has no protection from the sun, which makes it very hard for it to survive in the wild.
Some people even spoke of mutant alligators living in the sewers which have been exposed to many different types of toxic chemical waste which altered them, making them deformed and sometimes even larger and with strange colouring. A gigantic mutant alligator based on these myths appears in the 1980 film ''
Alligator
An alligator, or colloquially gator, is a large reptile in the genus ''Alligator'' of the Family (biology), family Alligatoridae in the Order (biology), order Crocodilia. The two Extant taxon, extant species are the American alligator (''A. mis ...
.''
Contemporary accounts
One 1927 account describes an experience of a Pittsburgh Bureau of Highways and Sewers employee who was assigned the task of clearing out a section of sewer pipe on Royal Street in the Northside Section of the city. The account reads, "
eremoved the manhole cover and began to clear an obstruction when he realized that a set of 'evil looking eyes' was staring at him." He then removed a alligator and took it home with him. There are other numerous recent media accounts of alligators occupying storm drains and sewer pipes, all from states in the southern US.
In
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
,
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
, a
Nile crocodile
The Nile crocodile (''Crocodylus niloticus'') is a large crocodilian native to freshwater habitats in Africa, where it is present in 26 countries. It is widely distributed in sub-Saharan Africa, occurring mostly in the eastern, southern, and ce ...
was captured by
firefighter
A firefighter (or fire fighter or fireman) is a first responder trained in specific emergency response such as firefighting, primarily to control and extinguish fires and respond to emergencies such as hazardous material incidents, medical in ...
s in the sewers below the
Pont Neuf bridge on March 7, 1984. The crocodile, named Eleonore (or Eleanore), lived at the
Aquarium
An aquarium (: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. fishkeeping, Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquati ...
in
Vannes
Vannes (; , , ) is a Communes of France, commune in the Departments of France, French department of Morbihan, Brittany (administrative region), Brittany, northwestern mainland France. It was founded over 2,000 years ago.
History
Celtic ...
and died in May 2022.
A baby alligator was caught in August 2010 by the
NYPD
The City of New York Police Department, also referred to as New York City Police Department (NYPD), is the primary law enforcement agency within New York City. Established on May 23, 1845, the NYPD is the largest, and one of the oldest, munic ...
in the sewers in
Queens
Queens is the largest by area of the Boroughs of New York City, five boroughs of New York City, coextensive with Queens County, in the U.S. state of New York (state), New York. Located near the western end of Long Island, it is bordered by the ...
. However, it is unlikely that a fully grown adult would survive for long in New York, due to the cold winter temperatures.
Real alligators in sewers
Alligators are occasionally sighted in the drains and sewers of Florida, due to many of these waste outlets' backing out onto the
swamps
A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...
. A 2024 study using wildlife cameras to investigate storm sewers around
Alachua County documented the presence of 35 species of wildlife, including
alligators.
[https://www.eaglehill.us/URNAonline2/access-pages/075-Ivory-accesspage.shtml]
See also
*
''Sewer Gators'' (film)
*
Killer Croc
*
Leatherhead (''Teenage Mutant Ninja Turtles'')
References
;Notes
;Sources
Tales From the Urban Crypt: Legendary whoppers about Gotham run the ghastly and ghostly gamut''Urbanlegends.com''. Retrieved April 26, 2010
External links
SewerGator.comGator Guide Lake EufaulaIMDB page for 'Alligator'Man Falls in with Alligator – St. Petersburg Times, June 16, 2000See Ya Later, Alligator – Bluffton Today, May 8, 2006
{{DEFAULTSORT:Sewer Alligator
Alligators and humans
Culture of New York City
American urban legends
Legendary reptiles
American legendary creatures
Subterranea (geography)
Alligator
An alligator, or colloquially gator, is a large reptile in the genus ''Alligator'' of the Family (biology), family Alligatoridae in the Order (biology), order Crocodilia. The two Extant taxon, extant species are the American alligator (''A. mis ...