Iowa records
Plain-bellied Watersnake in Iowa
HarmlessNerodia erythrogaster

Yes. The Plain-bellied Watersnake has been recorded in 3 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 Plain-bellied Watersnake records
3 listedSee the full Plain-bellied Watersnake profile or all snakes in Iowa.