South Dakota
Snakes in Fall River County
6 species have been documented here, 1 of them venomous.
Venomous snakes in Fall River County
Full guide & what to do if bitten →
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Fall River County
Prairie Rattlesnake
Crotalus viridis
Venomous
Plains Garter Snake
Thamnophis radix
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
North American Racer
Coluber constrictor
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Fall River County: FAQ
- Are there venomous snakes in Fall River County, South Dakota?
- Yes. 1 venomous snake species has verified records in Fall River County, South Dakota, including Prairie Rattlesnake. Most snakes in Fall River County, South Dakota, however, are harmless.
- How many snake species live in Fall River County, South Dakota?
- 6 snake species have verified records in Fall River County, South Dakota, of which 1 is venomous.
- What is the most commonly seen snake in Fall River County, South Dakota?
- The Prairie Rattlesnake is the most frequently reported snake in Fall River County, South Dakota, based on verified wildlife observations.
- What should I do if I see a venomous snake in Fall River County, South Dakota?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.