LARGE SERPENT

This creature is said to dwell in the Monongahela River (West Virginia).  It seems that it is said there is a whole population living in its waters, not just a single creature.  The name given to the species is the Ogua.  One of them was supposedly killed by settlers in the 18th Century.  It was 20' in length.  These Oguas are said to emerge at night to kill deer.