South Dakota
Snakes in Walworth County
8 species have been documented here, and none are venomous.
Every snake recorded in Walworth County
Plains Garter Snake
Thamnophis radix
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Gopher Snake
Pituophis catenifer
Harmless
North American Racer
Coluber constrictor
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.