Click image for details provided by U.S. Fish & Wildlife Service

Adult Lake Erie watersnakes are uniform gray in color or have incomplete band patterns. They resemble the closely related northern watersnake (Nerodia sipedon sipedon), but often lack the body markings, or have only a pale version of those patterns. Lake Erie watersnakes grow to 1 1/2 to 3 1/2 feet in length. They are not venomous.