October 4, 2013 Water Snakes Holy Nerodia, Batman! The water snakes are everywhere! Okay, maybe “everywhere” is an exaggeration. But “everywhere there’s water” isn’t. Nerodia sipedon sipedon, the northern water snake, has been particularly prevalent this fall, with people up and down the Fox River (and its tributaries) reporting sightings of this medium-sized, blotchy-brown snake.