Missouri records
Plain-bellied Watersnake in Missouri
HarmlessNerodia erythrogaster

Yes. The Plain-bellied Watersnake has been recorded in 41 Missouri counties. It is non-venomous (harmless). Heavy banded or blotched body, round pupils, and a narrow head — unlike the cottonmouth's broad, blocky head.
Missouri counties with Plain-bellied Watersnake records
41 listedSee the full Plain-bellied Watersnake profile or all snakes in Missouri.