The list of lake and river monsters attested in worldwide folklore.
The list
Body of water Area Nation Continent Name(s) Description First and last reported sightings NotesPalmital Ravine, AnagaEuropeAnguila peludaMonstrous hairy eel; with a head covered in hair and a threatening malice in its gaze.Alkali LakeNorth AmericaAlkali Lake Monster40-foot-long (12 m) alligator-like creature with rough, grayish-brown skin and a horn-like appendage located between its eyes and nostrils.Aluminé Lake, Limay River ProvinceSouth AmericaNguruviluFox-headed aquatic snakeAltamaha RiverNorth AmericaAltamaha-ha long with a snake-like head and flippers like a sealMemaloose Lake North AmericaAmhulukSerpentine with hornsKalapuya LegendFulk LakeNorth AmericaBeast of 'Busco, Oscar the TurtleGiant Snapping Turtle1898–1948Lake ErieNorth AmericaBessie, South Bay BessieSnake-like and long, at least a foot (30 cm) in diameter, with a grayish color.Erie CanalNorth AmericaCanal MonsterGiant snake-like creature1910-2006Said to grab pets and small children into the canal.Black RiverNorth AmericaBlack River MonsterDark-colored serpentine body with flippers and large bulging eyes1951–Lake DillonNorth AmericaBlue DillyManta ray-like creatureLake Mendota North America Bozho Serpentine creature, sometimes taken for a log until it moves.circa 1860–????Said to play 'pranks' such as chasing boats and tickling bathers' feet.Wisconsin Historical Society Archives Namesake of local arts & culture news website.Brosno LakeEuropeBrosno Dragon, BrosnyaLake KhaiyrAsiaLake Khaiyr MonsterLabynkyr LakeAsiaLabynkyr Devil or Labynkyrsky ChertVarious descriptions - possibly longVarious swamps, billabongs, creeks, riverbeds and waterholes across AustraliaAustraliaBunyipVariously described as having a round head, an elongated neck, and a body resembling that of an ox, hippopotamus, or manatee.Part of traditional Aboriginal beliefs and stories throughout AustraliaLake ChamplainNorth AmericaChampA reptilian creature with slimy gray skin, in length, with a long neck, a horselike head, and four flippers.Charles Mill Lake North AmericaCharles Mill Lake MonsterArmless reptilian with luminous green skin and glowing green eyes1959–1963Chesapeake BayNorth AmericaChessieDark-colored snakelike body with flippers.Crescent LakeNorth AmericaCressieEel-Like Lake Monster1950s–presentDevil's LakeNorth AmericaDevil's Lake MonsterFresh Water OctopusLake TotaSouth AmericaDiablo Ballena (Devil Whale), Monster of Lake TotaA huge black fish, bigger than a whale, with the head of a bull.1652–Lake ElsinoreNorth AmericaElsie, Hamlet, Lake Elsinore MonsterCross between a plesiosaur and a sea serpent1884–1994Flathead LakeNorth AmericaFlessie, Flossie, Flathead Lake MonsterEither a long eel-like creature; round, brown to blue-black in color and possesses steel-black eyes and undulating hips or a large-sized fish from in length.Lake OntarioNorth AmericaGaasyendietha Dragon that dwells in rivers and lakes of Canada, especially Lake Ontario. This dragon flies on a trail of fire, and can also spew fire.Seneca LegendLake Thunderbird Lake Oolagah