Common Watersnake
Nerodia sipedon • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Natricinae, Genus: Nerodia, Species: Nerodia sipedon
Found throughout central and eastern North America, ranging from southern Ontario and Quebec in Canada, south to Louisiana and Florida, and as far west as Colorado and Oklahoma.
Look up Common Watersnake in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Natricinae, Genus: Nerodia, Species: Nerodia sipedon
Conservation
Least Concern (IUCN). Generally abundant, though locally threatened by wetland destruction and persecution by humans who mistake them for other species.
Physical Description
Variable coloration from brownish to grey or reddish with dark crossbands or blotches that are wider than the light spaces between them. Bands often break into alternating blotches toward the tail. Heavily keeled scales and a stout body. Pupils are round.
Size & Dimensions
Specimen in image appears to be an adult around 60-90 cm. The species typically ranges from 60 to 105 cm (24-42 inches), with a record maximum of roughly 150 cm (59 inches).
Habitat
Primarily semi-aquatic, found in lakes, ponds, rivers, streams, and marshes. Often seen basking on rocks, logs, or hanging from branches over water. Preference for slow-moving or standing water.
Diet & Feeding
Carnivorous; feeds primarily on fish and amphibians (frogs, toads, salamanders). An active forager that swallows prey alive, often using the shoreline to help pin struggling animals.
Reproduction
Viviparous (gives birth to live young) rather than laying eggs. Litter sizes are large, ranging from 15 to 30 young on average, typically born in late summer (August to October).
Conservation Status
Least Concern (IUCN). Generally abundant, though locally threatened by wetland destruction and persecution by humans who mistake them for other species.
Cultural Significance
Often unfairly maligned due to its threat display and resemblance to cottonmouths. Ecologically vital for controlling fish and amphibian populations in North American wetlands.
Notable Features
Excellent swimmers capable of diving and remaining submerged for several minutes.