Assiscunk Creek is a tributary of the Delaware River in southwestern New Jersey in the United States.The name Assiscunk (also spelled Assiscunke or Essiscunk) came from the Lenape language meaning "muddy creek". Other names were Wissahisk River, Birch Creek, and Barracks Creek.Assiscunk Creek is approximately 17-mile (27 km) long, and drains an area of approximately 60 square miles (160 km2) of Burlington County, New Jersey.