How to Identify a Northern Water Snake

If I had to guess which snake most commonly gets mistaken for water moccasins (also known as cottonmouths) or copperheads, I’d choose the northern water snake (Nerodia sipedon). They have many color variations as they darken with age, sometimes to a nearly black color. Between its swimming habits and its confusing markings it easily fools paranoid hikers and swimmers. Fortunately,…