Identifying the Northern Water Snake: A Harmless Creek Resident

A homeowner near Decatur discovered a snake living in the creek behind their house and wanted help identifying it. The snake turned out to be a Northern Water Snake (Nerodia sipedon), a completely harmless species. According to herpetologist Jim Rogers, this snake eats a wider variety of fish and amphibians than any other North American water snake.

If you spot the snake again, look for its round pupils—a key feature that distinguishes non-venomous snakes from venomous relatives in the region. For those who prefer to avoid encounters altogether, a simple “snake stick” can be a great tool. Tapping it on fallen logs and the ground while exploring will encourage any nearby snakes to move away, and it gives kids a constructive way to burn off energy.

Northern Water Snake