Illinois records
Common Watersnake in Illinois
HarmlessNerodia sipedon
Yes. The Common Watersnake has been recorded in 94 Illinois counties. It is non-venomous (harmless). Heavy banded or blotched body, round pupils, and a narrow head — unlike the cottonmouth's broad, blocky head.
Illinois counties with Common Watersnake records
94 listed- Cook
- Will
- Dupage
- Johnson
- La Salle
- Sangamon
- Coles
- Saint Clair
- Madison
- Champaign
- Jackson
- Massac
- Kane
- Winnebago
- Lake
- Pope
- Grundy
- Union
- Williamson
- Kendall
- Vermilion
- Kankakee
- Peoria
- McLean
- Adams
- Richland
- Macoupin
- Whiteside
- Pulaski
- Livingston
- Fulton
- McHenry
- Macon
- Jersey
- Christian
- Morgan
- Montgomery
- Lee
- Rock Island
- Ogle
- Moultrie
- Monroe
- Jefferson
- Alexander
- Carroll
- Piatt
- Effingham
- Crawford
- Woodford
- Tazewell
- Randolph
- Mason
- Saline
- Bureau
- McDonough
- Marshall
- Hancock
- Franklin
- Clark
- Wabash
- Calhoun
- Putnam
- Jo Daviess
- Jasper
- Bond
- Hardin
- Fayette
- De Kalb
- Cumberland
- Stephenson
- Mercer
- Marion
- Lake Michigan
- Boone
- Henry
- Clinton
- Shelby
- Schuyler
- Perry
- Menard
- Logan
- Knox
- Edgar
- De Witt
- Cass
- Pike
- Iroquois
- Henderson
- Hamilton
- Greene
- Gallatin
- Ford
- Edwards
- Douglas
See the full Common Watersnake profile or all snakes in Illinois.