Nerodia sipedon sipedon
The northern water snake is a non-venomous aquatic snake that lives in lakes, swamps, streams and other waterways throughout the Chesapeake Bay watershed.
The northern water snake grows to be two to four feet long. They have a highly variable color and pattern and may be tan, gray, reddish or brownish-black. Older snakes are darker, often without a clear pattern. Dark crossbands appear on their neck and forefront of their body; the dark bands are winder than the lighter-colored spaces between them. Alternating dark blotches appear on their back and sides on the lower half of their body, and half-moon-shaped spots appear on their belly. They have a double row of scales under their tail. Northern water snakes also have round pupils.
These snakes are found in aquatic habitats including lakes, swamps, marshes, ditches, and freshwater streams and rivers, and they can live in brackish waters up to 12 ppt (parts per thousand) salinity. They swim actively during the day and at night and can often be found basking on stumps, rock and branches to stay warm.
Northern water snakes are common throughout the Chesapeake Bay watershed.
These snakes eat small fish, worms, frogs, salamanders and crayfish and will swallow their prey alive.
Large snakes and mammals such as foxes and raccoons prey upon water snakes. They escape predators by diving underwater. When threatened, they can be agressive and will secrete a foul-smelling odor to keep predators away.
Males begin to breed within two years. Females mate when they are three years old. Females give birth to one litter of live young per year, usually in mid- to late summer. Water snakes are independent at birth.