evidence: The Courantyne/Corentyne/Corantijn River is a river in northern South America in Suriname and Guyana. It is the longest river in the country and creates the border between Suriname and the East Berbice-Corentyne region of Guyana. Its tributaries include Kutari River, Coeroeni River, New River, and Zombie Creek. In Suriname; Kabalebo River, Lucie River, Sipaliwini River, Kutari River.