Pennsylvania is home to a diverse range of wildlife, and among its inhabitants are six different species of water snakes. These snakes vary in their behaviors and habitats, with some being more aquatic than others. In this article, Wildlife Informer explores the different water snake species found in Pennsylvania, shedding light on their characteristics, habitats, and the importance of clean water sources for their survival. From the Northern Water snake to the endangered Northern Rough Greensnake, each species has its own unique traits and adaptations that allow them to thrive in their watery homes. Whether you’re a nature enthusiast or simply curious about the wildlife in Pennsylvania, this article provides an interesting glimpse into the world of water snakes and their important role in the state’s ecosystem.

Water Snakes in Pennsylvania: 6 Different Species

Pennsylvania is home to a diverse range of wildlife, including snakes. In fact, there are 21 different species of snakes that can be found in this state. Among these, there are several species of water snakes that are adapted to living in or around water. In this article, we will be focusing on the six different species of water snakes that can be found in Pennsylvania.

Northern Water Snake

Scientific name: Nerodia sipedon
Length: 24-55 in.
Venomous: No

The Northern Water snake is one of the most common water snakes found in Pennsylvania. Despite their harmless nature, they are often mistaken for the venomous Copperhead due to their similar coloration and patterning. These snakes are distributed throughout the state and can be found in various aquatic environments such as streams, lakes, ponds, marshes, and swamps. They primarily feed on small fish, amphibians, and crayfish.

Northern Rough Greensnake

Scientific name: Opheodrys aestivus
Length: 22-32 in.
Venomous: No

The Northern Rough Greensnake is another species of water snake that can be found in Pennsylvania. While they are more semi-aquatic than fully aquatic, these snakes do spend a significant amount of time in and around water. They prefer moist habitats like marshes, wet meadows, and the edges of lakes or streams. The Northern Rough Greensnake is currently endangered in Pennsylvania and is mainly found in Chester County in the Southeastern part of the state.

Queensnake

Scientific name: Regina septemvittata
Length: 14-23 in.
Venomous: No

Queensnakes are semi-aquatic snakes that spend most of their time in aquatic habitats. They are typically found in areas with a good supply of crayfish, which make up the majority of their diet. These snakes can be found in slow to quick moving streams and rivers, as well as lakes and ponds. In Pennsylvania, Queensnakes occur in two separate populations in the Western and Southeastern parts of the state. It is important for their habitat to have clean water sources, as they are very sensitive to water pollution.

Ribbon Snake

Scientific name: Thamnophis saurita sp.
Length: 20-34 in.
Venomous: No

Ribbon Snakes are semi-aquatic snakes that can be found in Pennsylvania. There are two subspecies of Ribbon Snakes in the state: the Eastern Ribbon Snake and the Northern Ribbon Snake. These snakes are typically found in wooded or rocky habitats that also have a permanent water source. Ribbon Snakes are known to bask on branches or in bushes near water sources and will quickly retreat into the water when threatened. The Allegheny Mountains divide the two populations of Ribbon Snakes, with the Northern Ribbon Snakes occurring in the Northwestern part of the state and the Eastern Ribbon Snake along the East half of Pennsylvania.

Northern Copperhead

Scientific name: Agkistrodon contortrix mokasen
Length: 24-36 in.
Venomous: Yes

The Northern Copperhead is one of the three venomous snakes found in Pennsylvania. While they are not fully aquatic, they are semi-aquatic and can commonly be found near or in water along the edges of streams or in swampy areas. Northern Copperheads are widely distributed throughout the state, particularly in the lower two-thirds. They have also been known to inhabit rocky or hilly areas and are sometimes referred to as the “upland moccasin”.

Kirtland’s Snake

Scientific name: Clonophis kirtlandii
Length: 14-18 in.
Venomous: No

Kirtland’s Snake is a unique species that may or may not still be present in Pennsylvania. There haven’t been any confirmed observations of this snake in the state for nearly 60 years. However, historically, they were known to occur in the Western part of Pennsylvania, west of the Allegheny Mountains. Kirtland’s Snakes are semi-aquatic and semi-fossorial, meaning they can be found in areas near streams, wetlands, ponds, and wet prairies. They also spend time underground. Due to the rarity of this species, it is important to report any sightings to organizations dedicated to reptile conservation.

Recap of Water Snakes in PA

In summary, Pennsylvania is home to several species of water snakes that are adapted to living in or around water. These snakes include the Northern Water snake, Northern Rough Greensnake, Queensnake, Ribbon Snake, Northern Copperhead, and Kirtland’s Snake. While some of these snakes are fully aquatic, others are more semi-aquatic, meaning they spend a significant amount of time both on land and in the water. It is important to note that while the Northern Copperhead is venomous, the other water snakes mentioned in this article are harmless.

For more information about water snakes in other states, check out our articles on water snakes in Ohio and water snakes in Missouri.