Wow, a lot of people who know nothing of snakes, or don't have a clue where New England is, have tried to answer this!
The New England area only has TWO venomous snakes(there's absolutely NO SUCH THING as a "poisonous" snake, by the way, since you have to swallow or inhale a poison for it to harm you). Those two are the Timber Rattlesnake(Crotalus horridus), and the Northern Copperhead(Agkistrodon contortrix mokassen). The Timber Rattlesnake is classified as an Endangered species in what is left of its range in New England, which means it's protected by law. They have become extremely rare due to killing by humans and due to habitat loss. There are NO Cottonmouths(also called Water Moccasins) or Diamondback Rattlesnakes(Crotalus adamanteus) in New England. The Eastern Diamondback is a strictly SOUTHERN animal, found only in the Southeastern United States, in the Carolinas, Georgia, Florida and along the Gulf coast of Alabama and Mississippi . Even in those states, with the exception of Florida, where it occurs throughout the state, it's found only along the coastal areas. Eastern Virginia is the northernmost habitat of the Cottonmouth(Agkistrodon piscevorus).
The New England area only has TWO venomous snakes(there's absolutely NO SUCH THING as a "poisonous" snake, by the way, since you have to swallow or inhale a poison for it to harm you). Those two are the Timber Rattlesnake(Crotalus horridus), and the Northern Copperhead(Agkistrodon contortrix mokassen). The Timber Rattlesnake is classified as an Endangered species in what is left of its range in New England, which means it's protected by law. They have become extremely rare due to killing by humans and due to habitat loss. There are NO Cottonmouths(also called Water Moccasins) or Diamondback Rattlesnakes(Crotalus adamanteus) in New England. The Eastern Diamondback is a strictly SOUTHERN animal, found only in the Southeastern United States, in the Carolinas, Georgia, Florida and along the Gulf coast of Alabama and Mississippi . Even in those states, with the exception of Florida, where it occurs throughout the state, it's found only along the coastal areas. Eastern Virginia is the northernmost habitat of the Cottonmouth(Agkistrodon piscevorus).