Iowa records
Common Watersnake in Iowa
HarmlessNerodia sipedon

Yes. The Common Watersnake has been recorded in 58 Iowa counties. It is non-venomous (harmless). Heavy banded or blotched body, round pupils, and a narrow head — unlike the cottonmouth's broad, blocky head.
Iowa counties with Common Watersnake records
58 listed- Polk
- Johnson
- Adams
- Linn
- Story
- Dubuque
- Scott
- Madison
- Marion
- Jackson
- Henry
- Des Moines
- Black Hawk
- Muscatine
- Boone
- Van Buren
- Dallas
- Warren
- Hamilton
- Washington
- Mahaska
- Allamakee
- Guthrie
- Clinton
- Winneshiek
- Wapello
- Monroe
- Louisa
- Lee
- Jefferson
- Appanoose
- Hardin
- Decatur
- Webster
- Lucas
- Keokuk
- Jones
- Fremont
- Floyd
- Fayette
- Davis
- Cedar
- Buchanan
- Bremer
- Union
- Taylor
- Tama
- Pottawattamie
- Mitchell
- Marshall
- Jasper
- Iowa
- Delaware
- Clayton
- Chickasaw
- Cerro Gordo
- Carroll
- Butler
See the full Common Watersnake profile or all snakes in Iowa.