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Snakes

Common Watersnake

Nerodia sipedon

Across the regions where it's common, the Common Watersnake peaks from April to August.

Shows up in 17 ecoregions and 33 states

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Snakes

Common Watersnake

Nerodia sipedon

Look, don't take. Many states regulate collecting reptiles and amphibians. Photograph it, log it on iNaturalist and leave it where you found it.

Description

The common watersnake (Nerodia sipedon) is a species of large, nonvenomous, common snake in the family Colubridae. The common watersnake can grow up to 135 cm (4 ft 5 in) in total length (including tail).Wikipedia ↗

Habitat

The northern watersnake (Nerodia s. sipedon) naturally occurs as far west as Colorado, east of the Rocky Mountains, and is commonly found in riparian ecosystems along river systems, such as the South Platte River and Arkansas River. N. sipedon inhabits streams, lakes, and ponds, as well as wetlands.Wikipedia ↗

When it's active

N. sipedon is active during the day and at night. Female movement during the mating period was directly and positively related to male mate location success and this effect was intensified when females were freshly-shed.Wikipedia ↗
Alie / C.A. Kratzer · CC BY-SA 4.0

Often mistaken for

Eastern Copperhead, Broad-banded CopperheadThough superficially resembling the venomous copperhead (Agkistrodon contortrix) and often killed as a result of this mistaken identity, the corn snake lacks functional venom and is harmless to humans. Wikipedia ↗Corn snakes can sometimes be confused with venomous southern copperheads (Agkistrodon contortrix), but the two can be differentiated by the narrower head, lighter coloration, and square-shaped spots that are found in red corn snakes. Animal Diversity Web ↗Copperheads vs. young ratsnakes, corn snakes, watersnakes and hognose snakes →

Often mistaken for

Northern Cottonmouth, Florida CottonmouthMany scientists dislike the use of the term water moccasin since it can lead to confusion between the venomous cottonmouth and nonvenomous water snakes. Wikipedia ↗Nerodia fasciata is often mistaken for venomous cottonmouths (Agkistrodon piscivorous) despite the differences in their physical appearance. Animal Diversity Web ↗Cottonmouths vs. watersnakes →

About the Common Watersnake

When is the Common Watersnake most active?

Across the regions where it's common, the Common Watersnake peaks from April to August.

Where does the Common Watersnake live?

It has enough records to show in 17 ecoregions and 33 states, including Alabama, Arkansas, Colorado, and Connecticut.

What does the Common Watersnake look like?

It's often confused with the Eastern Copperhead and Broad-banded Copperhead.

What does the Common Watersnake look like?

It's often confused with the Northern Cottonmouth and Florida Cottonmouth.